The heat exchanger for heat exchange between the boiler and the absorber, the method of heat transfer and its application in a heat pump

 

(57) Abstract:

In the absorption heat pump is placed heat exchanger with serpentine paths in heat exchange zones of the absorber and generator, and the contour of the coolant circulating between the chamber and exterior heat exchangers and one of the heat exchangers located in the absorber, condenser or reboiler. Heat exchanger circulates weak and strong solutions and heat transfer from the absorber to the boiler. The use of the invention will allow to increase efficiency and improve operational characteristics of the heat pump. 6 C. and 38 C.p. f-crystals, tabl., 7 Il.

The invention is a partial continuation of application serial number 08/076759 filed June 15, 1993, which is the application and partial continuation of application serial number 07/793644, filed November 18, 1991 and published on 21 December 1993 as U.S. patent N 5271235.

This invention was made with government support under contract H-17497C by order of the Ministry of energy (the Department of Energy). The government has certain rights in relation to this invention.

The present invention relates to refrigerating units kick and absorber (generator-ansorber jeat exchange "GAX"). The invention is particularly intended for use in air-to-air absorption heat pumps with gas ignition.

The absorption refrigeration cycles were developed in the mid-nineteenth century and was used primarily in cooling systems (chillers). In these cycles was used a mixture of refrigerant (refrigerant) and an absorbent (absorbent), and refrigerant vapor was absorbed in the liquid absorbent, thus generating heat, and then was heated mixture of refrigerant and absorbent material in the reboiler for the Department of vapor. The condenser, which is also produced heat and the evaporator, which gave warmth and completed the cycle. The heat generated by absorption, along with the heat from the condenser was given to the cooler generally to the cooling water.

These previously developed installation with single-stage absorption cycle were ineffective, but before using the electric motors were often preferred to the compression settings, as the cost of heat energy required to bring them into action, were low, and they required much less mechanicassociations installation was being used less as changes in the relative cost of gas and electricity and improved compression system with electric drive. However, even in the present single-stage installation still used in some low-pressure industrial air conditioning installations with barometrically refrigerating machine and refrigerating systems for vehicles intended for recreation and hotel rooms.

In 1913 Altenbirch invented advanced absorption cycles. When working on one of these cycles efficiency compared to the previously developed single-stage cycles was increased due to the fact that there was transfer of heat generated in the absorber fluid from the refrigerant and absorbent, which will be blown into the boiler. Due to this heat transfer decreased demand in the total amount of heat that was required to bring the boiler to evaporate the refrigerant from the mixture of refrigerant and absorbent. This system was called the cycle of heat transfer with application absorber (absorber heat exchange cycle - AHE).

This cycle of heat transfer has been used since 1965, to create absorption plants that b is s with an air condenser. However, even in these settings, based on the cycle of heat transfer using absorber (AHE), a large part of the heat generated in the absorption process in the absorber, was lost. The same cycle of heat transfer was also used in the experiment in air-to-air gas heat pumps, which were rational when heated, but never, not mass-produced. As energy costs increased, air conditioners based on the cycle of heat transfer with application absorber, has lost most of its advantages from the point of view of operating costs, and at present the market for sale is very limited.

In 1913 Altenkirch also invented another absorption cycle, which was to recover more heat from the heat released in the absorption process in the absorber. During this cycle, which is known as the cycle of heat exchange between the boiler and the absorber (GAX), heat setting, thereby high-grade heat generated in the absorption process in the absorber, transmitted through the liquid coolant in the low temperature section of the boiler. When a loop of heat exchange between kupatila higher temperatures for the boiler compared to the AHE-installations and therefore, it is possible to achieve higher energy efficiency. Thermal efficiency of such facilities in relation to a particular type of fuel used can be significantly higher than thermal efficiency of furnaces, boilers, etc.

However, the concepts in the preceding technical level, in accordance with which the implementation cycle of heat exchange between the boiler and the absorber (GAX cycle), had the disadvantage that required a separate path of heat transfer, which used a separate heat-transfer fluid to transfer heat from the absorber to the boiler. This outline of heat transfer require hermetic sealing, expansion chamber, a pump capable of variable flow, and control systems that coordinate the flow rate of the liquid coolant with the heat, you want to send in a series of heat exchange between the boiler and the absorber or in the refrigerating cycle, or cycle of heating at each particular temperature. These concepts in the preceding technical level typically involved the use of liquid coolant, which remained in the liquid phase and thus ispolnyayut standard cycle condenser-evaporator, still used for domestic and small industrial installations for heating and cooling. Electric heat pumps are affective to meet the requirements of the heating and cooling of residential and small industrial buildings in areas with relatively mild climates, such as southern States of the United States of America, but these electric heat pumps are not capable without additional heating equipment to provide the necessary heating in regions where temperatures fall below about 30oF (-1,1oC). In addition, these electric heat pumps, typically used refrigerants, which can be chlorofluoromethane compounds (HCFC) for compounds of chlorine, fluorine and carbon (CFC), harmful to the environment.

Thus, a need exists for a heat exchanger providing heat exchange between the boiler and the absorber, and method suitable for use in domestic or small industrial heat pump, which effectively transfers most of the heat generated in the absorber in the absorption process, the boiler without the use of expensive, prone to failure, independent of the heat transfer path.

oF (ABOUT 17.8 MLNoC).

Additional characteristics and advantages of the invention will be presented below in graphical materials and in the description and will partly be obvious from the graphics and from the description, or may be identified in the practical application of the invention. Advantages asobrain.com and absorber, a heat pump comprising a heat exchanger providing heat exchange between the boiler and the absorber, and method of heat transfer between the absorber and a boiler in a heat exchanger providing heat exchange between the boiler and the absorber, hide the signs of this heat exchanger are disclosed with graphics, descriptions and claims in this article.

To achieve these and other advantages and in accordance with the purpose of the invention, implemented and widely disclosed herein according to the present invention, on the one hand, the developed heat exchanger that provides heat exchange between the boiler and the absorber and includes a boiler and the absorber. The absorber has an internal pressure (pressure in the inner cavity), which is lower than the internal pressure of the boiler and the absorber and the boiler have high - and low-temperature zone at the opposite ends and the area of heat transfer. The temperature ranges of the boiler and absorber, which define the respective areas of heat transfer, overlap. Provided the backbone for the fluid flow to circulate weak solution from the high temperature zone boiled atemperature zones of the boiler and the absorber and through these zones.

Improvement of heat exchanger providing heat exchange between the boiler and the absorber, in accordance with an accomplished and widely described in this material the invention lies in the fact that there is a thermal circuit, which receives all or at least part of the weak solution from the highway to the fluid flow, as well as being part of the strong solution from the highway to the fluid flow, and which circulates parts of the weak and strong solution of the casings zone heat absorber and the boiler, thereby transferring heat from the absorber to the boiler.

On the other hand, the present invention includes a heat exchanger providing heat exchange between the boiler and the absorber (GAX-exchanger), which includes a boiler containing solution having a concentration gradient, changing from a strong concentration near the upper end to the weak near the lower end, and the temperature gradient, varying from a low near the upper end of the up high near the lower end. At the lower end of the heater is the heater for heating the solution in the reboiler.

GAX-Teploobmennik (heat exchanger, providing themselves absorber, with the pressure in the inner cavity, which is lower than the internal pressure of the boiler, and containing a solution which has a concentration gradient, varying from weak near the upper end to the strong near the lower end, and the temperature gradient changing from high near the upper end to the strong near the lower end, and the temperature gradient changing from high near the upper end to a low near the lower end. The corresponding temperature gradients of the boiler and absorber overlap, and this overlap determines the corresponding area of the heat transfer in the boiler and the absorber.

This heat exchanger providing heat exchange between the boiler and the absorber, in accordance with the present invention also includes a heat exchange line for a solid solution having the entrance, which communicates via a fluid (liquid communication with the absorber near its lower end and is thus, to take a strong solution from the absorber heat exchange element located in the area of the heat absorber to the heat transfer from the absorber to the strong solution, and an exit located in the boiler near its upper end for rcpradamastery of the boiler. Also providing a pump having fluid communication with the backbone for a strong solution, which is designed to move the fluid through the heat exchange line for the strong solution from the absorber to the heat exchange element of the absorber and then to the boiler. This heat exchanger providing heat exchange between the boiler and the absorber includes another heat exchange line for a weak solution, with the entrance, which is in liquid communication with the boiler near its lower end and located to accept a solution from the boiler, the heat exchange element located in the area of heat transfer of the heater to transfer heat from the weak solution of the boiler, and an exit located in the absorber near its upper end for distribution of the weak solution coming from the lower end of the boiler, for the passage of the gradients of concentration and temperature of the absorber.

On the other hand, in accordance with the present invention has also developed a heat pump, a chamber containing a liquid-air heat exchanger, an outer liquid-air heat exchanger, the heat exchanger providing heat exchange between the boiler and the absorber described above, and what atom, to circulate a liquid coolant between the chamber and exterior heat exchangers and heat exchanger providing heat exchange between the boiler and the absorber to selectively heat one heat exchanger and transferring heat from the other heat exchanger.

In accordance with another aspect of the present invention, a method of heat transfer between the absorber and a boiler in a heat exchanger providing heat exchange between the boiler and the absorber. This heat transfer is accomplished by circulating a part of the strong solution and the whole or at least part of the weak solution through the respective zones of the heat absorber and water boiler.

In accordance with another aspect of the present invention, a method of heat transfer between the area of low temperature and zone with an average temperature using a heat exchanger providing heat exchange between the boiler and the absorber according to this invention. This method includes circulating at least part of the fluid coolant chamber between the heat exchanger and at least one of the following heat exchangers: heat exchanger, absorber, heat exchanger, condenser and teploe from one of the heat exchangers: heat exchanger absorber, heat exchanger condenser and heat exchanger of the boiler - chamber to the heat exchanger. The method also includes the circulation of a fluid coolant between the outdoor heat exchanger and the evaporator, thereby being heat transfer fluid antifreeze from the outdoor heat exchanger to the heat exchanger of the evaporator.

In accordance with another aspect of the present invention, a method of heat transfer between the area with high temperature and area with an average temperature using a heat exchanger providing heat exchange between the boiler and the absorber of the present invention. This method includes circulating at least part of the fluid coolant between the outer heat exchanger and at least one of the following heat exchangers: heat exchanger, absorber, heat exchanger, condenser and heat exchanger of the boiler, thus ensuring the transfer of heat through a fluid coolant from at least one of the heat exchangers: heat exchanger, absorber, heat exchanger, condenser and heat exchanger of the heater to the outdoor heat exchanger. The method also includes the circulation of a fluid coolant chamber between the heat exchanger and Teploobmennik evaporator.

Although the invention is illustrated in the form of household heat pump with gas ignition, the invention in the broadest sense is not limited thereby and its advantages and positive aspects are equally applicable to other processes of heating and cooling. The above and other advantages and characteristics of this invention will become apparent when considering the following description, complete with graphics.

Fig. 1 is a block diagram showing an absorption device that uses conventional heat exchange circuit including a boiler and an absorber (GAX);

Fig. 2 is a diagram pressure-temperature-composition (P-T-X) of the system of Fig.1;

Fig. 3 is a block diagram of a first variant of the heat exchanger providing heat exchange between the boiler and the absorber (GAX heat exchanger) according to the present invention;

Fig. 4 is a block diagram of a second variant of the heat exchanger providing heat exchange between the boiler and the absorber of the present invention;

Fig. 5 is a block diagram of a third variant of the heat exchanger provides taproom is vertigo the version of the heat exchanger, providing heat exchange between the boiler and the absorber of the present invention; and

Fig. 7 is a block diagram of a heat pump according to the present invention, which uses a heat exchanger providing heat exchange between the boiler and the absorber according to this invention.

The preferred options.

In accordance with the invention, the term "weak solution", as used in this application refers to the solution in the high temperature zone of the boiler or exiting, i.e. to the solution at the bottom of the boiler. The term "solid solution" as used herein refers to a solution in the low temperature zone of the absorber or exiting, i.e. to the solution at the bottom of the absorber. The expression "weak" and "strong" refers to the concentration of the absorbed component (components), that is, the refrigerant in the solution as a whole. Thus, weak liquid solution contains less of the absorbed refrigerant, such as ammonia, and more absorbent, such as water, compared with the same quantity of liquid solid solution. However, couples that are in equilibrium with sydkoster pairs, coming from the evaporator may have a concentration of the refrigerant component, for example, about 99%, while the strong liquid solution in equilibrium with a given steam strong solution may have a concentration of the refrigerant component, for example, about 45-48%. Accordingly, pairs of weak solution in the upper part of the absorber, which is in equilibrium with liquid with a weak solution coming from the boiler, will be the concentration of the refrigerant, which is compared with the concentration of weak liquid solution.

As noted above, and absorbed by the element (s), and component (s) of absorbent material, forming a weak solution and strong solution, may be located on or in the vapor or in the liquid state, or in combinations of two States. In addition, the term "heat pump" as used herein is intended to refer to any device that converts heat between low-, medium - and high-temperature conditions, and is designed to encompass not only the commonly understood meaning of the term, but also to cover the heat converters, and more traditional setup, such as refrigerating machines and air conditioning 1, the heat exchanger 10, which provides heat exchange between the boiler and the absorber and functioning on the basis of the cycle of heat exchange between the boiler and the absorber contains a boiler 12, the absorber 14, a condenser 16, an evaporator 18, a pump 38 for a solution and highways for circulation of the solution of refrigerant to the boiler 12 and absorber 14 and through them. In particular, highway to a solution of refrigerant line 21 for strong solution, providing fluid communication strong solution 32 from the low-temperature zone C of the absorber 14 with the low temperature zone D of the heater 12, and the line 22 to the weak solution, providing connection for fluid of the weak solution 46 of the high-temperature zone E of the boiler 12 with high temperature zone F of the absorber 14. The trajectory of the solution ends of the refrigerant passage of the solution from line 22 to the weak solution through the zones F, G, C absorber 14 with a high temperature, intermediate temperature and low temperature, and passage of the solution from line 21 to a strong solution through zone D, I, E boiler 12 with low temperature, intermediate temperature and high temperature. The line for the refrigerant exits the passage of refrigerant from cipating is from evaporator 18 to the absorber 14 via line 28.

Have in mind that the terms "low-temperature zone", "zone with intermediate temperature and high-temperature zone" used here refer to the corresponding relative temperatures. As shown in Fig. 1, each zone limited (determined) using a temperature range that each element have a relatively higher or lower values compared to the other area. Thus, for example, high-temperature area E of the heater 12 may have a temperature of about 400oF (204,4oC), and low-temperature zone D of the heater 12 may have a temperature of about 200oF (93,3oC). On the other hand, the high-temperature zone F absorber 14 may have a temperature of about 300oF (148,9oC), and low-temperature area C of the absorber 14 may have a temperature of about 100oF (37,8oC). And in the reboiler 12 and absorber 14 has a zone with overlapping temperature, referred to here as the area of heat transfer. This area of heat transfer is shown in Fig. 1 in the area between zones D and I of the boiler 12 and the area between the zones G and F of the absorber 14.

Absorption of the boiler, in essence, represents a distillation column, which has a reflux condenser and rectify zones D and E, while rectifying section represents the upper, cooler section corresponding to the section above the zone D. the Dividing point between the reflux condenser and a distillation section in the area D is the area of the boiler, which has a temperature corresponding to the boiling point liquid solid solution when the pressure in the boiler.

As is shown in Fig. 1, vertical temperature gradients absorber 14 and the heater 12 are opposite to each other, that is, the zone E of the boiler 12, with the highest temperature is at its lower end or near its lower end, while the area F of the absorber 14 with the highest temperature is at its upper end or near its upper end. Therefore, the orientation of the respective zones D-I and G-F heat transfer in a similar manner the opposite. The temperature range defining the zone D-I and G-F heat transfer is within the temperature overlap between the temperature range of the heater 12 and the temperature range of the absorber 14, for example, within the range of from about 200oF (93,3oC) up to about 300oF (148,9oC).

The known device shown in Fig. 1, contains haloperido thus, to ensure the passage of fluid directly between the zones of heat transfer.

In the operation of the known installation according to Fig. 1 fluid refrigerant, which consists mainly of refrigerant, such as ammonia, but which may contain a small amount of absorbent material, if it is volatile (volatile) such as water leaves the evaporator 18 mainly in the form of steam and passes through line 28 to the absorber 14 in its low-temperature zone C. This refrigerant vapor rising through the absorber 14, absorbed the counter flow of weak solution, thus forming a strong solution of 32, which is collected in liquid form in the low-temperature zone C of the absorber 14. This process occurs at a temperature above ambient temperature, with heat, part of which is transferred to the air, water, antifreeze, or other heat transfer fluid (liquid coolant) circulating during this process through the heat exchanger 36, which is in heat exchange circuit 34.

A strong solution 32 is passed through line 21 to a strong solution by means of a pump 38 for the solution in zone D of the heater 12, in which under the sorber 14. For example, the pressure in the boiler 12 may typically be about 240-340 pounds per square inch absolute pressure (1654,7424 - 2344, 2184 kPa) and the pressure in absorber 14 may be about 15-80 pounds per square inch absolute pressure (103,4214 - 551,5808 kPa). In accordance with the principle of absorption of the heat exchange cycle (AHE - absorber heat exchange) heat exchanger 40 on highway 21 for the strong solution is used to transfer heat absorber strong solution 32. In one alternative embodiment, a strong solution 32 is heated in the heat exchanger 40 to its boiling point at the pressure of the boiler 12 and is served in the form of heat gain to the zone D of the boiler 12. Alternatively, as shown in Fig. 1, a strong solution 32 is heated in the heat exchanger 40 to a temperature below its boiling point and then heated in the heat exchanger 41 in the rectifying section above the area D of the boiler 12. Any alternative strong solution 32 is distributed inside the boiler 12 in zone D.

The source 42 of heat and heat transfer fins 44 cooperate to warm strong solution 32 as it passes down through the heater 12, thereby averting refrigerant vapor from the strong solution 32 with the aim of education is engaged in approximately 100%, is displaced from the boiler 12 through line 24 to the refrigerant in the condenser 16 where it is condensed and fed through line 26 through the throttle device 48 into a zone of lower pressure in the evaporator 18. A weak solution of 46 in the high temperature zone E of the heater 12 is returned through line 22 to the weak solution in the high temperature zone F of the absorber 14. Dry heat the weak solution 46 is used as the inflow of heat into the boiler 12 in the heat exchanger 51. Heat can also be transferred in a heat exchanger (not shown) between highway 21 for a strong solution and highway 22 to the weak solution.

In known heat exchangers installation, providing heat exchange between the boiler and the absorber shown in Fig. 1, the heat transfer is carried out using a heat transfer path 30 between the boiler and the absorber, including, for example, a pair of heat-exchange coils 50 and 52 and pump 54 to circulate heat transfer fluid (liquid coolant) such as water under pressure. Because the vertical gradients of temperature of the absorber 14 and the heater 12 are opposite to each other, it is necessary to provide cross-connection routes Microm showing on the chart pressure-temperature-composition in Fig. 2, where the point D is a point that divides a reflux condenser and a distillation section of the boiler 12, the point E is a high-temperature zone of the boiler 12, the point C is the low - temperature zone of the absorber 14, point F - high temperature zone of the absorber 14, the point of the I - zone of the boiler 12, which is at a lower temperature compared to the temperature at point F of the absorber 14, and the temperature at point I is less than an amount sufficient to provide the temperature difference required for heat transfer between these areas and the G-spot is an area of absorber 14, which is at a higher temperature compared to the temperature at point D of the heater 12, and the temperature at the point G is greater than an amount sufficient to provide the temperature required for heat transfer between the zones. These zones of Fig. 2 correspond to the zones D, E, C, F, I and G, respectively, shown in Fig. 1. Line D-I corresponds to the area of heat transfer of the heater 12 in a series of heat exchange between the boiler and the absorber, and the line G-F corresponds to the area of the heat absorber 14 in a series of heat exchange between the boiler and the absorber. Points A and B respectively represent soda F corresponds to a line 22 to the weak solution. Arrows in Fig. 2, passing from the line G-F to the line D-I show the transfer of heat from the heat absorber 14 to the heat of the heater 12.

The heat to be transferred from absorber 14 to the heater 12 has a temperature range corresponding to the absorber 14, and this heat must be transferred into the boiler 12 with a temperature range that is smaller only on the temperature difference required for heat transfer. For the most affective execute this process the heat of the most hot spot zone F of the heat absorber 14 has to be in the hottest area of the first heat transfer in the boiler 12, and similarly it must be performed for each of the sites, which have a gradually decreasing temperature and are found in areas of the heat absorber 14 and the heater 12. This means that the temperature range of the heat transfer fluid (liquid coolant) must be between the ranges of the temperatures of the heat transfer zones of the boiler 12 and absorber 14 and each of the areas (these areas).

In accordance with the present invention, shown and described in this material, there is a heat exchanger circuit in the heat exchanger, which obespechenie in the internal cavity, which is below the pressure in the inner cavity of the boiler, and the boiler and the absorber have high - and low-temperature zone located opposite ("forward") to each other, and the area of heat transfer. The temperature ranges of the boiler and absorber overlap, and this overlap determines the appropriate area of heat transfer to the boiler and absorber. A heat exchanger providing heat exchange between the boiler and the absorber includes a line for the fluid flow, designed for circulation of the solution, with a strong and a weak concentration of the refrigerant through the high temperature zone, heat transfer and low temperature zone of the boiler and absorber.

In accordance with the present invention developed options and ways of effecting heat transfer in a series of heat exchange between the boiler and the absorber in heat exchanger providing heat exchange between the boiler and the absorber, which is used as latent heat and dry heat of the working substance setup, consisting of a refrigerant/absorbent. The device according to the invention contains a heat-exchange circuit, which is located so that it has been part of labog the s through the zones of the heat absorber and the boiler to transfer heat from the absorber to the boiler. The term "zone heat", as used herein, is not only used to indicate zones in the inner cavity of the boiler and absorber, which have overlapping temperature, but also to indicate those areas that are adjacent to (zones) of the internal cavities of the boiler and absorber having overlapping temperature, or are with them in heat transfer contact. Transfer (heat) preferably should be performed in the whole range of overlapping temperatures.

In accordance with the invention, implemented and widely disclosed herein, the heat exchange circuit includes a heat-exchange line for a weak solution, containing heat exchange element, which is located in the area of heat transfer of the heater, and all or at least part of the weak solution from the highway to the fluid flow near the lower end of the boiler, enters this (heat exchanger) highway, part of the weak solution passes through a heat exchange element located in the area of heat transfer of the heater in which heat is transferred from a weak solution to the boiler, and then the weak solution of the heat transfer element of the boiler postoperati for strong solution, containing heat exchange element, which is located in the area of the heat absorber, and a part of the strong solution from the highway to the fluid flow near the lower end of the absorber comes into this (heat exchanger) highway, part of the strong solution passes through a heat exchange element located in the area of the heat absorber, in which heat is transferred from the absorber to the strong solution, and then the part of the strong solution from the heat exchange element of the absorber flows through this line into the internal cavity of the boiler. The term "heat exchanger element" used in the description of this invention, refers to any apparatus or device that can provide heat exchange between fluid media, for example, such as a heat-exchange coil.

In accordance with the invention, is shown and broadly disclosed herein, the driving force to circulate the solution in the heat exchange circuit may alternatively be created by the pump, the pressure differential between the boiler and the absorber or by their combination. Thermal circuit also includes inputs that are in liquid communication with the artery for flow of a fluid of creditibility or absorber. Inputs can be in fluid communication with the line for the fluid flow, in which the solution is a liquid, vapor or a combination of both.

In accordance with the invention, is shown and broadly disclosed herein, is provided by the outputs of the heat transfer circuit for distributing the portions of the solution circulating between the areas of heat transfer in the internal cavity or boiler, or absorber. These outputs can be any device that is able to distribute the liquid or the mixture of vapor and liquid, such as a distributor, and they are located in the zone of the boiler or absorber, in which the temperature of the solution coming out of the distributor, and the temperature of the internal cavity of the boiler or absorber directly next to the dispenser is essentially the same. Depending on the pressure of solution, supplied in a dispenser can be provided by the device for regulating the pressure before the valve on the flow direction and is designed to regulate the flow and/or decreasing the pressure of the solution entering the distributor.

All versions of the invention described in this material, and their modification and this flow through the heat exchange coil or boiler, or in the absorber. This orientation of the flow in the best way corresponds to the temperature gradients in the absorber, in which the solution is heated in the boiler, in which the solution gives off its heat. This orientation, in addition, provides the best temperature countercurrent between the rising content of the coil and the current down the liquid.

In accordance with variants of the heat exchanger providing heat exchange between the boiler and the absorber and described in this material, heat exchange coils can be placed in the inner cavity of the boiler and absorber. Alternatively, in accordance with the invention, heat exchange coils can be placed outside in relation to the boiler and the absorber near the zone in which the desired heat transfer, and/or in heat transfer contact with her. It is implied that the term "zone heat", as used herein, refers to as the inner space of the boiler or absorber, and areas outside of the boiler or absorber adjacent to the zone in which it is desirable to transfer heat, and/or are with her in heat transfer contact.

In Fig. 3 shows the heat exchanger I transfer method dry heat and latent heat between the boiler and the absorber in accordance with the present invention. In this embodiment, the heat exchange circuit may also serve as a backbone for the weak solution and contains a heat exchanger element 104 located in the area of heat transfer of the heater 12. Provided by heat exchange line 120 to a weak solution, which has an input 122 that is located in such a way as to take a weak solution of 46 from the lower end E of the boiler 12, the control valve 106 and the valve 124 located in the upper part of absorber 14 in such a way as to distribute a weak solution in the absorber. In addition, the absorber 14 is made with the adiabatic section 108 at its upper end.

In the embodiment of the present invention shown in Fig. 3, the heat exchange circuit includes another heat exchanger element 144 that is located in the area of the heat absorber 14. Provided by heat exchange line 140 for strong solution, which has an input 141 located so that it received a strong solution of highway 20 for a strong solution, located behind the pump 38 to the strong solution in the course of the flow regulating valve 142 and the valve 146, located so as to spread the strong solution in the reboiler 12.

In addition, in accordance with the first embodiment of the present invention the part of the strong solution 32 is diverted from highway 20 to the strong solution at the entrance 141 and fed through the heat exchange line 140 to a strong solution through the control valve 142 to the heat exchange element 144 absorber. P is the absorption is transferred from the absorber solution, providing partial evaporation of the alcoholic solution and the remainder of the heat transfer in a series of heat exchange between the boiler and the absorber. After a heated two-phase solid solution is fed through line 140 to the valve 146 and through the dispenser 146 enters the boiler 12.

In Fig. 4 shows the second heat exchanger (heat exchanger) 200, which provides heat exchange between the boiler and the absorber and uses the transfer method dry heat and latent heat between the boiler and the absorber in accordance with the present invention. This second embodiment differs from the first variant shown in Fig. 3, that in accordance with this second embodiment weak solution 46 is diverted from the inlet 122 in the high temperature zone E of the heater 12 and fed through the heat exchange line 120 to a weak solution in the heat exchange element 104 of the boiler, where dry heat is transferred from a weak solution to the boiler 12, providing part of the total heat transfer in a series of heat exchange between the boiler and the absorber. Then the cooled weak solution is fed through line 120 to the second heat exchanger element 208, which size is but to increase the temperature of the weak solution prior to absorption. From the heat transfer element 208 a weak solution passes through the control valve 106 to the valve 124 located in the upper part of the absorber 14. In addition, in the upper part of absorber 14 may be provided adiabatic section 108. The remainder of the heat transfer in a series of heat exchange between the boiler and the absorber by heat absorption, which is transmitted to the heat exchanging element 144 absorber from absorber 14 to the part of the strong solution 32, abstracted from highway 22 to the strong solution entering through line 140 to the boiler 12.

In Fig. 5 shows a third heat exchanger (heat exchanger) 300, which provides heat exchange between the boiler and the absorber and uses the transfer method dry heat and latent heat between the boiler and the absorber in accordance with the present invention. This third embodiment differs from the first variant shown in Fig. 3, that in accordance with this third embodiment, the part of the strong solution 32 is supplied from the heat transfer element 144 of the absorber by heat exchange line 140 to a strong solution in the second heat exchanger element 146 boiler, dataelement 146, in which part of the strong solution 32 is cooled, and pairs of strong solution again becomes a strong solution of liquid, passing the heat absorption of the boiler 12. Pairs of strong solution can again turn in a strong solution of liquid completely or partially, and it is determined by the requirements of the operating characteristics of the unit or cost parameters. Then the part of the strong solution 32 is supplied from the second heat exchanger element 146 of the reboiler through line 140 through the valve 148 in the boiler 12.

In Fig. 6 depicts a fourth heat exchanger (heat exchanger) 400, which provides heat exchange between the boiler and the absorber and uses the transfer method dry heat and latent heat between the boiler and the absorber in accordance with the present invention. This fourth embodiment differs from the first variant shown in Fig. 3, so that this fourth embodiment includes the characteristics of the additional heat exchange circuits in the second and third variants of execution, shown respectively in Fig. 4 and 5.

Thus, in this fourth embodiment, the cooled weak solution of 46, leaving t is a, which ensures the dry heat transfer from the absorber to a weak solution. From the heat transfer element 208 a weak solution passes through the control valve 106 to the valve 124 located in the upper part of the absorber 14, and the absorber 14 may be providing with the adiabatic section 108 in its upper end.

In addition, in accordance with this fourth embodiment, the part of the strong solution 32 is supplied from a heat exchanger element 144 of the absorber by heat exchange line 140 to a strong solution in the second heat exchanger element 146 of the boiler, which is located in the area of heat transfer of the heater 12. Part of the strong solution 32 flows upward through the heat exchanger element 146, which is part of the strong solution 32 is cooled, and pairs of strong solution again becomes a strong solution of liquid, passing the heat absorption of the boiler 12. Pairs of strong solution can again turn in a strong solution of liquid completely or partially, and it is determined by the requirements of the operating characteristics of the unit or cost parameters. Then the part of the strong solution 32 is supplied from the second heat exchanger element 146 of the reboiler through line 140 through raspredeliteli decreases the amount of heat transfer loops required for heat transfer by heat exchange between the boiler and the absorber, compared to the situation when only uses transfer dry heat. Thus, the present invention allows to obtain more than a simple device with a corresponding cost savings of labor and materials in the creation and operation.

Another advantage lies in the fact that the simplified requirements of regulation over the entire operating range of the heat pump incorporating features of the present invention. At low outside temperatures, i.e. temperatures below about 10oF (-12,2oC), thermal circuit, in which the heat exchange between the boiler and the absorber is no longer able to provide useful heat and should be disabled. In this mode of operation, without heat exchange between the boiler and the absorber heat exchange element 104 for transmission to the dry heat can continue to work to maintain maximum efficiency and minimize the number of controls required for switching between the mode of heat exchange between the boiler and the absorber and mode of operation without such heat exchange.

Another advantage of working conditions, determined by the environment, by regulating the amount of heat in the heat exchange between the boiler and the absorber, which is transferable with a weak solution of 46 and part of the strong solution 32, so that the operation of the device answered any desired requirements from the point of view of the performance (efficiency) and costs.

In Fig. 7 shows the developed heat pump 550, which uses one of the methods of heat exchange between the boiler and the absorber and one of the heat exchanger providing heat exchange between the boiler and the absorber according to the invention. Heat pump 550 includes an outer heat exchange coil 552 and vnutrenniy heat exchange coil 554. In-vessel heat exchanger coil 554 may include a device 556 for air supply, such as a fan or blower for supplying heated or cooled air into the building. The outer heat exchange coil 552 may also include a device 557 for air supply, such as a fan or blower. The outer internal chamber of the heat exchange coils 552 and 554 and the device 556 and 557 for air supply can be any device from a standard of known equipment, ispolzuya 550 consists of two main sections - a heat exchanger including a boiler and an absorber (absorption units) and system (highways) for fluid antifreeze. A heat exchanger providing heat exchange between the boiler and the absorber, in accordance with the invention can be made of the previously discussed elements, including the absorber 14, a heater 12, a condenser 16, a pump 38 for a solution and the evaporator 18. System (highways) for fluid antifreeze is divided into the circuit for the cold fluid and the circuit for the hot fluid. Fluid antifreeze, which can be used in accordance with the invention, include those fluids that can be used and be useful for heat transfer. The preferred fluid antifreeze is an aqueous solution comprising a liquid coolant, which is not toxic and not flammable, such as propylene glycol.

Unlike standard heat pump systems, in which the reversal of the cooling circuit, to change the operation mode from cooling to heating in a heat pump 550 according to the invention is used is not a reversal of the cooling circuit, and the device 558 to control the flow in the installation, which is preferably of predstavleniya flow in the installation enables the direction of fluid antifreeze or from the cold evaporator 18, or from the hot condenser 16, the absorber 14 and the heater 12 or the outer heat exchange coil 552 or internal (in-vessel) heat exchanger coil 554.

The circuit for the cold antifreeze includes the evaporator 18, which cools the liquid coolant passing through the heat exchange coil 586 evaporator, removing heat from the fluid coolant, which is removed from the home or building in the summer or from the ambient air in the winter.

The circuit for the hot antifreeze includes the absorber 14, a condenser 16 and the heater 12, which raise the temperature of exhaust heat to values substantially higher than the 100oF (37,8oC). The sum of the amounts of heat removed from absorber 14, a capacitor 16 and the heater 12, is equal to the sum of the two heat thermal tributaries: the first one from the gas flame and the other representing the low-temperature heat flow into the evaporator 18. The absorber 14, the heater 12 and the capacitor 16 is passed discharged from the unit heat hot flowing the coolant through a heat exchanger coil 578 absorber, heat exchanger coil 572 boiler and heat exchanger coil 568 capacitor. In winter, the hot fluid antifreeze passes much more atelinae heat is not required.

In one particular embodiment, the heat pump according to the invention is shown in Fig. 7, the circuit for the hot antifreeze includes the first line 562, which delivers the fluid antifreeze from the device 558 flow control setting to the first device 564 flow control, which can represent, for example, the diffuser (the divisor) thread. The device 560 for moving a fluid medium, such as a pump is used to circulate a fluid coolant through the circuit for hot antifreeze. The device 560 to move the fluid can be placed anywhere in the circuit for the hot antifreeze, but preferably is placed in the first line 562.

In accordance with this embodiment, the first portion of the fluid coolant from the first line 562 is directed through the first device 564 flow control in the second line 566, which delivers the fluid coolant in the heat exchange coil 568 capacitor. In the heat exchange coil 568 condenser, heat is transferred from capacitor 16 fluid antifreeze. Fluid coolant is supplied from a heat-exchange coil 568 condenser heat coil 572 hot water heater on the third of the ka 12 fluid antifreeze. Fluid coolant is supplied from a heat-exchange coil 572 hot water heater back to the device 558 flow control setting on the fourth line 574.

In this embodiment, the second portion of the fluid coolant is directed from the first line 562 through the first device 564 flow control in the fifth line 576 which provides a supply of fluid coolant in the heat exchange coil 578 absorber. In the heat exchange coil 578 absorber heat is transferred from the absorber 14 fluid antifreeze. Fluid coolant is supplied from a heat-exchange coil 578 absorber according to the sixth highway 580 in the fourth line 574 and back to the device 558 flow control setting.

Mean that a particular system of organization of flows in the circuit for the hot antifreeze shown in Fig. 7, shown only as an example and should not limit the invention. Other systems facilitating the flow of fluid coolant between the absorber 14, a condenser 16 and the heater 12 are within the scope of the invention. For example, the flow of a fluid coolant through the absorber 14, a condenser 16 and the heater 12 may be parallel or serial. However, preferred is ur cold antifreeze includes the first line 582, which circulates fluid antifreeze from the device 558 flow control installed in the heat exchange coil 586 evaporator. In the heat exchange coil 586 evaporator, heat is transferred from the fluid coolant to the evaporator 18. Fluid coolant is pumped from the heat exchanger coil 586 evaporator back into the device 558 flow control setting on the second line 588. The device 584 for moving a fluid medium, such as a pump is used to circulate a fluid coolant along the contour for the cold antifreeze. The device 584 to move the fluid can be placed anywhere in the circuit for the cold antifreeze, but preferably it is placed on the first line 582. Mean that a particular system of organization of flows in the circuit for the cold antifreeze, is shown in Fig. 7, shown only as an example and should not limit the scope of the invention.

The device 558 flow control setting directs cool antifreeze in-cell (internal) heat exchanger coil 554 in the summer and in the outer heat exchange coil 552 winter, simultaneously directing hot antifreeze in the outer heat exchange coil 552 in the summer and inside in the heating or cooling of dwellings and other buildings, if necessary, can also be used in the winter to defrost (defrost) outdoor heat exchanger coil 552 by reversing the flow so that that hot coolant is directed into the outer heat exchange coil 552.

The choice of materials for the manufacture of structures for all options of execution described in this material, and their modifications will depend on the components of the working substance from the refrigerant and absorbent, as well as from the expected range of operating pressure and temperature. For ammonia and aqueous absorbent solution, operating at temperatures up to about 400oF (204,4oC) and pressures up to about 400 pounds per square inch absolute pressure (2757,904 kPa), the preferred material for all elements in contact with solution is a mild (low carbon) steel. The selection of material to work with other absorbent fluid environments - this is a known problem for professionals in the field of absorption plants. Similarly, it is well known that certain materials should be chosen for paths for antifreeze.

Although various heat transfer means described herein and using the heat exchange between the boiler and the absorber were shown in a domestic or small industrial heat pump, their benefits are not limited to such applications. Headache between the boiler and the absorber, described in this material may be used for processes that require heat to medium temperature and cooling, such as brewing, food processing, pasteurization, and the manufacture of paper, just to mention a few examples. In addition, the inventive concept is not limited absorption cycle heat pumps that efficiently convert heat from a combination of low and high - temperature heat source to heat at medium heat. The invention is equally applicable to heat converters, which convert heat to medium with medium or high temperature, such as hot waste water discharged from the processing plant to obtain useful heat with a high temperature and simultaneously the low-temperature heat.

For specialists in this area it is obvious that can be done different ways and modification of the heat exchanger providing heat exchange between the boiler and the absorber, a heat pump and method of heat transfer between the boiler and the absorber, without departing from the idea and scope of the present invention. Thus, it is understood that the present invention covers modly of the invention and their equivalents.

List of inscriptions on drawings:

Fig. 1: 1.1 - prior;

Fig. 2: A capacitor, B - evaporator, C-F - absorber, D-E - heater, <---- - heat flux;

2.1 is the pressure in pounds per square inch absolute pressure; 2.2. temperature.

Fig. 7: 554 - coil inside the building, 552 - outer coil; 558 - water valve; 560, 584 - pumps; 12 - boiler; 14 - absorber; 16 - condenser; 18 - evaporator.

1. A heat exchanger providing heat exchange between the boiler and the absorber and including a boiler and an absorber, the absorber has a pressure in the inner cavity that is less than the pressure in the inner cavity of the boiler, the boiler and the absorber have high - and low-temperature zones, determining the corresponding temperature ranges, temperature ranges overlap and thereby determine the corresponding zone of the heat transfer in the boiler and the absorber and the heat exchanger has a line for flow of fluid to circulate weak solution from the high temperature zone of the boiler and the strong solution from the low temperature zone of the absorber in the high temperature zone, zone heat transfer and low temperature zones capatilise least a portion of the weak solution from the boiler and enters the portion of the strong solution from the absorber, moreover, the heat exchange circuit circulates parts of the weak and strong solution between the areas of heat transfer, thereby transferring heat from the absorber to the boiler.

2. The heat exchanger under item 1, characterized in that the heat exchange loop contains a heat exchanger element of the boiler, located in the area of heat transfer of the heater, the heat exchange line for a weak solution, which is in liquid communication (communication fluid) line for the fluid flow, has an input for receiving a weak solution of the line for the fluid flow and an outlet for the distribution of a weak solution within the absorber, and the specified heat exchange line for a weak solution provides the flow of weak solution from the highway to the fluid flow through the heat exchanger element of the heater and then into the internal cavity absorber, heat exchanger element of the absorber, located in the area of the heat absorber, the heat exchange line for a strong solution, which is in liquid communication (communication fluid) line for the fluid flow, has an input for receiving a strong solution pump for fluid flow and an outlet for the continuous distribution is especiay the flow of strong solution from the highway to the fluid flow through the heat absorber element and then into the internal cavity of the boiler, and means for creating a driving force for circulation of the solution in the heat exchange circuit.

3. The heat exchanger under item 2, wherein the heat exchange circuit further comprises a second heat exchanger element of the absorber, which is installed on the heat exchange line for a weak solution, and is located in the area of the heat absorber, and specified heat exchange line for a weak solution provides the flow of weak solution from the highway to the fluid flow through the heat exchanger element of the heater, then through the second heat exchanger element of the absorber and then into the internal cavity absorber.

4. The heat exchanger under item 2, wherein the heat exchange circuit further comprises a second heat exchanger element of the heater, which is installed on the heat exchange line for a strong solution, and is located in the area of heat transfer of the heater, and the specified heat exchanger backbone for a strong solution provides the flow of strong solution from the highway to the fluid flow through the heat absorber element, then through the second heat exchanger element of the heater and then into the internal cavity of the boiler.

5. Teploobmennaja, mounted on the heat exchange line for a weak solution, and is located in the area of the heat absorber, and the second heat exchanger element of the heater, which is installed on the heat exchange line for a strong solution, and is located in the area of heat transfer of the heater, and specified heat exchange line for a weak solution provides the flow of weak solution from the highway to the fluid flow through the heat exchanger element of the heater, then through the second heat exchanger element of the absorber and then into the internal cavity of the absorber and the heat exchanger backbone for a strong solution provides the flow of strong solution from the highway to the fluid flow through the heat exchanger element of the absorber, then through the second heat exchanger element of the heater and then into the internal cavity of the boiler.

6. The heat exchanger under item 5, characterized in that the means for providing the driving force for circulation of the solution through the heat exchange circuit is a pump.

7. The heat exchanger under item 5, characterized in that the means for providing the driving force for circulation of the solution through the heat exchange circuit is a pressure difference between the al for the weak solution contains a regulating valve, located to the exit for the weak solution in the flow direction.

9. The heat exchanger under item 5, characterized in that the heat exchange line for a strong solution contains a regulating valve located before the exit for the strong solution in the flow direction.

10. The heat exchanger under item 5, characterized in that the inlet for the solid solution is in liquid communication (communication fluid) line for the fluid flow in the place where the solution is a strong solution of liquid.

11. The heat exchanger under item 5, characterized in that the entrance to the weak solution is in liquid communication (communication fluid) line for the fluid flow in the place where the weak solution is a weak solution of liquid.

12. The heat exchanger under item 5, characterized in that the weak solution coming from the highway to the fluid flow into the internal cavity absorber, is mainly in the liquid state at least part of the heat transfer path.

13. The heat exchanger under item 5, characterized in that the strong solution coming from the highway to the fluid flow in the inner space of the boiler, is found primarily in two-phase is, providing heat exchange between the boiler and the absorber containing a boiler containing solution having a concentration gradient varying from strong concentration near the upper end of the boiler to low concentrations near the lower end of the boiler, and the temperature gradient varying from a low temperature near the upper end of the heater to a high temperature near the lower end of the heater, the heater is designed to heat the solution in the boiler and located near its lower end, the absorber having a pressure in the inner cavity, which is below the pressure in the inner cavity of the boiler containing solution having a concentration gradient, changing from low concentrations near the upper end of the absorber to a strong concentration near the lower end of the absorber, and the temperature gradient varying from high temperatures near the upper end of the absorber to a low temperature near the lower end of the absorber, the overlap of the temperature gradients of the boiler and the absorber determines the appropriate area of heat transfer within the boiler and absorber heat exchange line for a weak solution, with the entrance being in gidrolazerny in the area of heat transfer of the heater, and the outlet being in liquid communication (communication fluid) with absorber near its upper end, and through the entrance into the specified heat transfer line for the weak solution enters at least a portion of the weak solution from the boiler, at a specified heat transfer line for the weak solution weak solution passes through the heat exchange element located in the area of heat transfer of the heater, and using the heat transfer line for the weak solution is provided by the distribution of a weak solution in the absorber through outlet passage (solution) on the gradients of concentration and temperature of the absorber, and the pump, being in liquid communication (communication fluid) with a heat exchange line for a strong solution and ensuring the discharge of strong solution from the absorber by heat exchange line for a strong solution in the boiler, characterized in that it contains a heat exchange line for a strong solution, with the entrance being in liquid communication (communication fluid) with absorber near its lower end, a heat exchange element located in the area of the heat absorber, and the outlet being in liquid communication (communication flowing creepage solution comes at least part of the strong solution from the absorber, at a specified heat transfer line for the strong solution is a strong solution passes through the heat exchange element located in the area of the heat absorber, and using the heat transfer line for the strong solution is provided by the distribution of strong solution in the reboiler through the exit passage (solution) on the gradients of concentration and temperature of the boiler.

15. Heat exchanger according to p. 14, characterized in that the heat exchange line to a weak solution contains a second heat transfer element located in the area of the heat absorber, and specified heat transfer line for the weak solution enters at least a portion of the weak solution from the boiler, the heat exchange line to a weak solution weak solution passes first through the heat exchange element located in the area of heat transfer of the heater and then through the second heat exchange element located in the area of the heat absorber, and using the heat transfer line for the weak solution is provided by the distribution of a weak solution in the absorber through the output order of transmission (solution) the gradients of concentration and temperature of the absorber.

17. Heat exchanger according to p. 14, characterized in that the heat exchange line to a weak solution contains a second heat transfer element located in the area of the heat absorber, and specified heat transfer line for the weak solution enters at least a portion of the weak solution from the boiler, at a specified heat transfer line for the weak solution weak solution passes first through the heat exchange element located in the area of heat transfer of the heater and then through the second heat exchanger element, RORA provides the distribution of a weak solution in the absorber through the output order of transmission (solution) on the gradients of concentration and temperature of the absorber, and heat backbone for a strong solution contains a second heat transfer element located in the area of heat transfer of the heater, and the specified heat transfer line for the strong solution enters the part of the strong solution in the heat exchange line for a strong solution strong solution passes first through the heat exchange element located in the area of the heat absorber and then through the second heat exchange element located in the area of heat transfer of the heater, and using the heat transfer line for the strong solution is provided by the distribution of strong solution in the reboiler through the output order of transmission (solution) on the gradients of concentration and temperature of the boiler.

18. The heat exchanger under item 17, characterized in that the pump creates a driving force for the supply of weak solution from the boiler through the heat exchange line for a weak solution to the absorber.

19. The heat exchanger under item 17, characterized in that the pressure differential between the boiler and the absorber creates a driving force for the supply of weak solution from the boiler through the heat exchange line for a weak solution to the absorber.

21. The heat exchanger under item 17, characterized in that the heat exchange line for a strong solution contains another control valve located before the output heat transfer line for the strong solution in the flow direction.

22. The heat exchanger under item 17, characterized in that the weak solution supplied from the boiler to the absorber by heat exchange line for a weak solution, is mostly in the liquid state.

23. The heat exchanger under item 17, characterized in that the strong solution supplied from the absorber to the boiler through the heat exchange line for a strong solution is a two-phase mixture of liquid and vapor at least in part of heat-exchange circuit.

24. Heat pump, a chamber containing a liquid-air heat exchanger, an outer liquid-air heat exchanger and a heat exchanger providing heat exchange between the boiler and the absorber and containing a boiler and an absorber, the absorber has a pressure in the inner cavity, which is below the pressure in the inner cavity of the boiler, and each device has a high - and nicotinee is perator determine the corresponding overlapping areas of heat transfer, the line for the fluid flow to circulate weak solution from the high temperature zone of the boiler and the strong solution from the low temperature zone of the absorber to the high temperature zones, areas of heat transfer and low temperature zones of the boiler and the absorber and through the zone contour for antifreeze, located in such a way as to circulate a fluid coolant between each of the devices in the chamber and an external heat exchanger with the aim of selective removal of heat from one heat exchanger and transfer heat to another heat exchanger, characterized in that it contains a heat-exchange circuit, which receives at least part of the weak solution from the boiler and which also receives a portion of the strong solution from the absorber and heat exchanger circuit circulates parts of the weak and strong solution between the areas of heat transfer, thereby transferring heat from the absorber to the boiler.

25. The heat pump under item 24, wherein the heat exchange circuit further comprises a heat exchanger element of the boiler, located in the area of heat transfer of the heater, the heat exchange line for a weak solution, which nahoditsya solution pump for fluid flow and an outlet for the distribution of a weak solution within the absorber, moreover, the specified heat exchange line for a weak solution provides the flow of weak solution from the highway to the fluid flow through the heat exchanger element of the heater and then into the internal cavity absorber, heat exchanger element absorber located in the area of the heat absorber, the heat exchange line for a strong solution, which is in liquid communication (communication fluid) line for the fluid flow, has an input for receiving a strong solution pump for fluid flow and an outlet for the distribution of strong solution inside the boiler, moreover, the specified heat exchanger backbone for a strong solution provides the flow of strong solution from the highway to the fluid flow through the heat absorber element and then into the internal cavity of the boiler, means for creating a driving force for circulation of the solution in the heat exchange circuit.

26. The heat pump under item 25, wherein the heat exchange circuit further comprises a second heat exchanger element absorber located on the heat exchange line to a weak solution and located in the area of the heat absorber, and specified the exchanger is of the second medium through the heat exchanger element of the boiler, then through the second heat exchanger element of the absorber and then into the internal cavity absorber.

27. The heat pump under item 25, wherein the heat exchange circuit further comprises a second heat exchanger element of the boiler, located in the area of heat transfer of the heater, and the specified heat exchanger backbone for a strong solution provides the flow of strong solution from the highway to the fluid flow through the heat absorber element, then through the second heat exchanger element of the heater and then into the internal cavity of the boiler.

28. The heat pump under item 24, wherein the heat exchange circuit further comprises a second heat transfer element located in the area of the heat absorber, and a second heat transfer element located in the area of heat transfer of the heater, and specified heat exchange line for a weak solution provides the flow of weak solution from the highway to the fluid flow through the heat exchanger element of the heater, then through the second heat exchanger element of the absorber and then into the internal cavity of the absorber and the heat exchanger backbone for a strong solution provides feed to the Torah heat exchanger element of the heater and then into the internal cavity of the boiler.

29. The method of heat transfer between the absorber and a boiler in a heat exchanger providing heat exchange between the boiler and the absorber and including a boiler and an absorber, the absorber has a pressure in the inner cavity, which is below the pressure in the inner cavity of the boiler, and each of the devices (and the absorber, and the boiler has high - and low-temperature zones at opposite ends that define respective temperature ranges and temperature ranges define the corresponding overlapping areas of heat transfer, and the line for the fluid flow to circulate weak solution from the high temperature zone of the boiler and the strong solution from the low temperature zone of the absorber through a high temperature zone, heat transfer and low temperature zone of the boiler and absorber, characterized in that it includes the circulation of all or at least part of the weak solution and part of the solid solution between the heat transfer zones of the boiler and absorber in heat exchange circuit, what ensures that the heat transfer from the absorber to the boiler.

30. The method according to p. 29, characterized in that it further includes the AC is for the fluid flow, through the heat exchange element located in the area of heat transfer of the heater, and then through the exit into the internal cavity absorber, and including also the moving part of the strong solution in the heat exchange circuit, which receives a strong solution of the line for flow of the fluid through the inlet, through the heat exchange element located in the area of the heat absorber and then through the exit into the internal cavity of the boiler.

31. The method according to p. 30, characterized in that it further includes moving a weak solution in the heat transfer path from the heat transfer element located in the area of heat transfer of the heater, through the second heat exchange element located in the area of the heat absorber and then through the exit into the internal cavity absorber.

32. The method according to p. 30, characterized in that it further includes a moving part of the strong solution in the heat transfer path from the heat transfer element located in the area of the heat absorber, through the second heat exchange element located in the area of heat transfer of the heater, and then through the exit into the internal cavity of the boiler.

33. The method according to p. 30, characterized in that it DOPOLNITEL in the area of heat transfer of the heater, through the second heat exchange element located in the area of the heat absorber and then through the exit into the internal cavity absorber and includes moving parts of strong solution in the heat exchange circuit of the heat exchange element located in the area of the heat absorber, through the second heat exchange element located in the area of heat transfer of the heater, and then through the exit into the internal cavity of the boiler.

34. The method according to p. 33, characterized in that it further includes moving the weak solution from the entrance, located near the lower end of the boiler through the heat exchange element located in the area of heat transfer of the heater, to the exit, located near the upper end of the absorber, so that the temperature of the weak solution coming from the lower end of the boiler above the temperature zone of the heat transfer of the heater, thereby transferring heat from the weak solution in the heat exchange element solution in the reboiler, and the moving part of the strong solution through the inlet being in liquid communication (communication fluid) with line for flow of the fluid through the heat exchange element located in the area of teplota compared to the temperature zone of the heat absorber, this ensures the transfer of heat from the solution in the absorber to the part of the strong solution in the heat exchange element.

35. The method according to p. 34, characterized in that it further includes moving the weak solution leaving the heat exchange element, which is located in the area of heat transfer of the heater, through the second heat exchange element located in the area of the heat absorber, and then to the exit, located near the upper end of the absorber, so that the temperature of the weak solution supplied from the zone of heat transfer of the heater has a lower value compared to the temperature zone of the heat absorber, thereby transferring heat from the solution in the absorber a weak solution in the second heat exchange element, located in the area of the heat absorber.

36. The method according to p. 34, characterized in that it further includes a moving part of the strong solution leaving the heat exchange element, which is located in the area of the heat absorber to the second heat exchange element located in the area of heat transfer of the heater, and then to the exit in the boiler, so that the temperature of the part of the strong solution supplied from zone theproper the output is provided by heat transfer from a solid solution in the second heat exchange element, located in the area of heat transfer of the heater, the solution in the reboiler.

37. The method according to p. 34, characterized in that it further includes moving the weak solution leaving the heat exchange element, which is located in the area of heat transfer of the heater, through the second heat exchange element located in the area of the heat absorber, and then to the exit, located near the upper end of the absorber so that the temperature of the weak solution supplied from the zone of heat transfer of the heater has a lower value compared to the temperature zone of the heat absorber, thereby transferring heat from the solution in the absorber a weak solution in the second heat exchange element, located in the area of the heat absorber, and the moving part of the strong solution leaving the heat exchange element, which is located in the area of the heat absorber to the second heat exchange element located in the area of heat transfer of the heater, and then to the exit in the boiler, so that the temperature of the part of the strong solution supplied from the heat absorber has a higher value compared to the temperature zone of the heat transfer of the heater, thereby Esperidi of the boiler, the solution in the reboiler.

38. The method according to p. 33, characterized in that it further includes moving a weak solution of the heat exchange circuit with a pump.

39. The method according to p. 33, characterized in that it further includes moving a weak solution of heat transfer circuit for transferring pressure between the boiler and the absorber.

40. The method according to p. 33, characterized in that it further includes moving a weak solution of the heat exchange circuit into the internal cavity absorber mainly in the liquid state.

41. The method according to p. 33, characterized in that it further includes a moving part of the strong solution in the heat exchange circuit to the internal cavity of the boiler in the form of a two-phase mixture of liquid and vapor at least in part of heat-exchange circuit.

42. The method according to p. 33, characterized in that it further includes a moving part of the strong solution in the heat exchange circuit with a pump.

43. The method of heat transfer in the zone of low temperature from the zone with an average temperature using a heat exchanger providing heat exchange between the boiler and the absorber and includes cipating the spine of the boiler, and each of the devices (and the absorber, and the boiler has high - and low-temperature zones at opposite ends, creates the appropriate temperature ranges and temperature ranges define the corresponding overlapping area of the heat transfer line for the stream of fluid to circulate weak solution from the high temperature zone of the boiler and the strong solution from the low temperature zone of the absorber through a high temperature zone, heat transfer and low temperature zone of the boiler and absorber heat-exchange circuit, which receives all or at least part of the weak solution from the boiler and which also receives a portion of the strong solution from the absorber, moreover, the method includes circulating at least part of the fluid coolant chamber between the heat exchanger and at least one of the heat exchangers: heat exchanger, absorber, heat exchanger, condenser and heat exchanger of the boiler, thereby transferring heat via a fluid coolant from at least one of the heat exchangers: heat exchanger, absorber, heat exchanger condenser heat exchanger of the boiler chamber to the heat exchanger, Civetta heat transfer through a fluid coolant from the outdoor heat exchanger of the evaporator, characterized in that it includes the circulation in the heat exchange circuit parts weak and strong solution between the heat transfer zones of the boiler and absorber, thereby transferring heat from the absorber to the boiler.

44. The method of heat transfer in the zone with an average temperature of the zone with high temperature using a heat exchanger providing heat exchange between the boiler and the absorber and including a boiler and an absorber, the absorber has a pressure in the inner cavity, which is below the pressure in the inner cavity of the boiler, and each of the devices (and the absorber, and the boiler has high - and low-temperature zones at opposite ends, creates the appropriate temperature ranges, and the area of heat transfer and temperature ranges define the corresponding overlapping areas of heat transfer, the line for the fluid flow to circulate weak solution from the high temperature zone of the boiler and the strong solution from the low temperature zone of the absorber to the high temperature zones, areas of heat transfer and low temperature zones of the boiler and the absorber and through these zones, the heat exchange circuit into which enters the creators of the absorber, moreover, the method includes circulating at least part of the fluid coolant between the outer heat exchanger and at least one of the heat exchangers: heat exchanger, absorber, heat exchanger, condenser and heat exchanger of the boiler, thereby transferring heat via a fluid coolant from at least one of the heat exchangers: heat exchanger, absorber, heat exchanger condenser heat exchanger of the heater to the outdoor heat exchanger, the circulation of fluid coolant chamber between the heat exchanger and the evaporator heat-exchanger, thereby transferring heat via a fluid coolant from the chamber of the heat exchanger the heat exchanger of the evaporator, characterized in that it includes the circulation in the heat exchange circuit parts weak and strong solution between the heat transfer zones of the boiler and absorber, thereby transferring heat from the absorber to the boiler.

 

Same patents:

Refrigeration unit // 2044966
The invention relates to refrigeration, and more particularly to a device of the absorption refrigeration units designed for use in household refrigerators or freezers

FIELD: refrigerating and cooling, particularly continuously operating sorption machines, plants or systems.

SUBSTANCE: method involves heating mixture of cooling agent and sorption agent in boiler up to cooling agent evaporation; condensing cooling agent vapor inside condenser to form liquid cooling agent; expanding cooling agent under pressure into evaporator; absorbing the expanded cooling agent by sorption agent in absorber; storing liquid cooling agent in solution between condenser and evaporator. If cold obtaining is required valve located behind receiver in liquid flow direction is opened and liquid under increased pressure is supplied from receiver to evaporator for cold production. Valve located in front of receiver in liquid flow direction is opened only in the case when pressure at condenser outlet exceeds receiver pressure. When boiler does not generate vapor or just before stopping in vapor generation valve located behind the receiver is closed.

EFFECT: possibility to obtain cold just after device actuation.

5 cl, 2 dwg

FIELD: heating.

SUBSTANCE: device (11) of absorption cooling comprises a generator (33) to generate a cooling fluid medium and an absorbing fluid medium by separation of a mixed fluid medium, a condenser (35) of the cooling fluid medium, an evaporator (51) of the cooling fluid medium, an absorber (55) of the cooling fluid medium and a cooling circuit (53). The condenser (35) is connected to the generator (33). The evaporator (51) is connected to the condenser (35) with the help of a pipeline (61) of supply with the cooling fluid medium. The evaporator (51) comprises at least one area of evaporation of the cooling fluid medium, into which the supply pipeline (61) enters. The absorber (55) is connected to the evaporation area and is connected to the generator (33) with the help of the pipeline (91) of supply with the absorbin fluid medium and a pipeline (93) of the mixed fluid medium removal. The circuit (53) comprises a pipeline (71) of the cooling fluid medium circulation with a front input (83) and a rear output (85), connected to the evaporation area. The pipeline (71) comprises the following serially installed components: a reservoir (73) for the cooling fluid medium, a pump (75) and the first heat exchanger (77). The pipeline (71) of circulation is equipped with a check valve (81), which is installed between the first heat exchanger (77) and the rear output (85), for blocking of the fluid medium available between the heat exchanger (77) and the valve (81), when the pump (75) is switched off.

EFFECT: device may be easily and compactly installed on a vehicle.

15 cl, 7 dwg

FIELD: power industry.

SUBSTANCE: absorption cooling machine with multi-stage ejector includes closed circulation circuit in which generator, multi-stage ejector, condenser, throttle, evaporator, pump and heat exchanger are installed in series. Housing of multi-stage ejector is covered with casing so that cavity being a cooling jacket is formed and it consists of n stages which are in-series arranged in the steam flow direction and connected to each other, and each of which includes receiving chamber, nozzle and diffuser. Receiving chamber and nozzle of stage 1 are connected via pipelines to evaporator and generator respectively. Generator is connected to heat exchanger and pump. Receiving chambers of stage 2 and next stages are connected to diffusers of previous stages; guide vanes and heat exchanger are arranged inside them; nozzles of stage 2 and next stages are in-parallel connected to delivery branch pipe of the pump. Casing adjoins the condenser housing and is equipped with inlet branch pipe; cooling jacket and diffuser of the last stage are connected to condenser through the holes made in the wall of its housing and cover plate respectively.

EFFECT: higher efficiency of absorption cooling machine with multi-stage ejector.

3 dwg

FIELD: refrigeration industry; heat-and-power engineering; other industries; production of the absorption- membrane installations.

SUBSTANCE: the invention presents the absorption- membrane installation, which ensures production of cold and heat energy working as the thermal pump by extraction from the strong solution of the refrigerant through the semi-permeable membrane under the pressure exceeding the osmotic pressure formed by the pump, the boiling of the refrigerant heated from the external source of the low-potential power at the low pressure with production of the refrigerating effect and absorption of the formed vapors by the weak solution of the refrigerant with production of the heat energy of the condensation and dissolution. The pressure under the membrane is maintained above the pressure of the refrigerant boiling at the environmental temperature. The expansion refrigerator is installed streamwise the refrigerant weak solution and behind the membrane block with usage of the mechanical power of the expansion refrigerator onto the drive of the pump and (or) on the drive of the booster-compressor compressing the vapors of the refrigerant till their mixing with the refrigerant weak solution and absorption. The invention usage will allow to expand the capabilities of the installation.

EFFECT: the invention ensures expansion of the capabilities of the installation.

5 cl, 6 dwg

FIELD: heating.

SUBSTANCE: present invention pertains to the power engineering industry. To extract heat from a cold medium and transmit it to a hot medium, heat of dissolution is used as well as separation from the solution, two or more substances or two or more groups of soluble or absorbable substances with different thermodynamic properties on their saturation lines or beyond these lines. For this purpose, in the cold part of the cycle, through a selective membrane or membrane, a solvent is moved from one solution to the other such that, one of the substances or one of the groups of substances separates from the solution or is absorbed, with heat release or heat absorption or no thermal effect. The second substance or group of substances is dissolved or separated by an absorber, with absorption of a large amount of heat. As a result, in the cold part of the cycle, heat is taken off the cooled medium. The obtained solution and separated substance or substances are channelled to the hot part of the cycle, heating them with oncoming heat exchanger. In the hot part of the cycle, there is oppositely directed movement of solvent through the selective membrane or membrane. As a result, a reverse thermal effect is achieved and heat is transferred to the hot medium. The obtained solution and separated substance are returned to the cold part of the cycle, cooling them with oncoming heat exchanger. Use of the invention increases efficiency of a refrigerator or heat pump.

EFFECT: increased efficiency of a refrigerator or heat pump.

9 dwg

FIELD: heating.

SUBSTANCE: method for conversion of heat energy to electricity, heat of increased potential and cold involves the following stages. A cooling agent is evaporated from a strong solution. A heated vapour flow is expanded with the performance of work and formation of spent vapour. Vapour is condensed. A liquid cooling agent is expanded and evaporated so that the cooling effect is formed. The cooling agent vapour of reduced temperature is absorbed. Pressure of the solution is increased and the solution is heated before evaporation. The heated cooling agent vapour is separated into two flows after evaporation, one of which expands with the performance of work, and the other one is condensed and used for generation of cold and/or heat energy. The cooling agent vapour flow, after its expansion with the performance of work, and the flow of the cooling agent vapour of reduced temperature and reduced pressure, which is obtained at evaporation of the cooling agent with the formation of the cooling effect, are absorbed using a common weak solution and with the formation of a strong solution including the cooling agent of both flows that are specified above. A device for conversion of heat energy to electricity, heat of increased potential and cold is described.

EFFECT: group of inventions is aimed at improvement of efficient generation of mechanical energy, heat and cold.

13 cl, 3 dwg, 1 tbl

FIELD: engines and pumps.

SUBSTANCE: invention relates to thermal pump. Thermal pump comprises multiple hollow elements provided with adsorbent. Said hollow elements house working fluid displacing between adsorbent and phase transition area. Hollow elements force the flow of heat transfer fluid in fluid circuit (101) by valve device over said hollow elements for them to be brought in thermal contact with fluid. Flow over hollow elements is alternated in cycles. At least two hollow elements, in every position of said valve, are flown over by fluid in parallel and at least two hollow elements are flown over successively. In every position of said valve, at least two sets of multiple hollow elements are flown over in parallel. At least one set of multiple hollow elements is arranged directly upstream or downstream of heat exchange (105, 106). The number of hollow elements flown over simultaneously in parallel makes at least one fourth, preferably, one third of the quantity of hollow elements flown over successively.

EFFECT: expanded applications.

18 cl, 17 dwg

FIELD: energy.

SUBSTANCE: invention is aimed at energy saving by rational use of renewable sources of heat and natural temperature drop in environment. Disclosed is a method of producing heat energy in a closed adsorptive cycle enhancement of temperature potential, consisting of consecutive steps of adsorption of cooling agent on adsorber, removal of cooling agent with adsorbent (regeneration), evaporation and condensation of cooling agent, adsorbent regeneration is performed by heating from renewable source of low-potential heat, and condenser is cooled to low temperature by using only natural temperature drop in environment.

EFFECT: invention increases temperature potential of heat source only due to use of natural temperature difference in environment.

3 cl, 2 dwg

FIELD: machine engineering.

SUBSTANCE: invention relates to methods for compressing the working fluid used to transfer heat from the coolant with a lower (E) to the coolant temperature with a higher temperature (Al), and may be used in the heat pump. The method combines absorption and change in concentration of the electrolyte solution, such as ZnCl2, (Na, K, Cs, Rb) OH, CoI2, (Li, K, Na) (Cl2, Br2, I, SO4) or substances whose concentration decreases with increasing temperature, in a polar solvent: H2O, NH3, Methanol, ethanol, methylamine, DMSO, DMA, AN, formamide, formic acid. A highly saturated solution is cooled, discharged from the absorber-exchanger (A1) from a high (1) to a low (2) temperature during passage through heat exchanger-crystalliser (NOT) to form absorbent crystals. Crystals separated (K1), remains low concentrated solution (2). For cooling low-concentrated solution is partially expanded (2), steam is supplied to crystals (R1) in which they are absorbed. Tighten the solution to the heat exchanger-evaporator pressure (E). The low-concentrated solution is expanded in the turbine producing work and refrigerating cycle to partially evaporate in an evaporator-heat exchanger (E) at a given temperature and solvent vapor formation. The additional absorbent crystals (K2) are separated, connecting them into the previously selected crystals (K1). Steam is heated by passing it through a heat exchanger, a crystalliser (NOT) and compressed (5) of its pressure absorber (A1). The low-concentrated solution (3) remaining after partial evaporation compressed to a pressure absorber (A1) and heated in a heat exchanger, a crystalliser (NOT). The separated crystals are heated in the heat exchanger, a crystalliser (NOT) is dissolved in a hot solution of (3) to form the highly-concentrated solution. Steam (4) is streamed into the absorber (A1), where the vapor is absorbed, and the heat is removed and re-formed starting solution.

EFFECT: method improves the efficiency of heat transfer, such as heating, air conditioning.

8 cl, 4 dwg

FIELD: power industry.

SUBSTANCE: device for implementing the adsorption cycle of increasing the temperature potential of a renewable heat source includes an adsorber, a heat exchanger in contact with the adsorbent granules, a vacuum tap, a container with liquid refrigerant and a heat exchanger partially immersed in the liquid refrigerant. The container with liquid refrigerant and the heat exchanger is a condenser and an evaporator. As the adsorbent, a composite adsorbent of methanol vapour is used, which is a porous matrix selected from the group consisting of silica gel, alumina, vermiculite, the pores of which contain a metal halide or nitrate from the range of: calcium, magnesium, lithium, nickel or cobalt in an amount of at least 17 wt %, Alcohols are used as the refrigerant-adsorbent.

EFFECT: increasing the temperature potential of a renewable heat source in a closed adsorption cycle.

4 cl, 1 tbl, 1 dwg

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