The method of operation of the system of heat and water supply and device for its implementation

 

(57) Abstract:

The invention relates to systems for heat supply and water using geothermal sources at sites with two or more hydrothermal layer. In the proposed method, the part of the day, for example in the night mode of the system, simultaneously with the heating on account thermotransformation geothermal flow of fluid from an underground reservoir carry out heating another part extracted from a given reservoir fluid above the temperature of the collector due to thermotransformations geothermal fluid flow lower temperature allowed for the supply of additional geothermal reservoir. Doherty fluid serves in the battery and in another part of the day pumped from the battery to the original manifold with simultaneous heat from the fluid, including heating fluid from another collector to the hot water temperature. Thermotransformations geothermal fluid flow when the heat in the first part of the day, the extra fluid, and in case the temperature of the main collector below the 20oC - when the selection from the fluid heat in the second part of the day, carried out using the reverse heat pump the material sources with low temperatures (5-40oC). 2 s and 5 C.p. f-crystals, 3 ill.

The invention relates to energy and can be applied in the systems of heat and water using geothermal sources at sites with two or more hydrothermal layer.

Famous implemented in the known device the way heat and water supply, is connected to a geothermal source, for example, to an underground reservoir through a well, including the removal of the collector through-hole geothermal fluid and the selection from the latest heat to thermal complex, consisting of subsystems hot and cold water supply. This low-temperature fluid disperses in the form of multiple threads, the main of which (thermal power) submit to the subsystem heating by transfer (selection) of heat from the fluid to the water network using inverse heat pump cycle low-boiling working body. By taking additional streams carry heat from one fluid flows from the fluid of the other thread also using a heat pump cycle, doprava thus part of the fluid to a temperature hot water. Doherty fluid and chilled when selecting alsosome heating portion of the fluid to a temperature higher than the temperature of the geothermal source is through the use of the heat capacity of a volume of fluid equal temperature from the same source, resulting costs of heat supply and water flows are interdependent and limited resource (flow rate) of the underground reservoir, which reduces thermal capacity of the heating-up.

Moreover, heating of the fluid by interaction in the heat pump cycle related to flow in from the same collector defined in this technology amounts of water and eliminates the possibility of independent control of degree of heating-up and the flow of hot and cold water. In addition, when the heat supply according to the technological scheme of this method is limited by thermal capacity of brackish sources that meet the standards of water supply. Using this technology cannot be used geothermal heat more mineralized sources, occurring on moderately deep and have, as a rule, temperatures of more effective thermotransformation geothermal flows using heat pump cycles.

These circumstances, and applied in the way the scheme of continuous drainage of fluid without feedback from the collector (without circulation of the fluid), which reduces the lifetime of the geothermal source, reduce n is">

Known closest to the proposed invention to the technical nature of the way that heat and water supply with battery geothermal fluid and thermal complex of connected wells to underground collector [2].

The method includes the withdrawal through wells from a header of one or more flows of fluid (depending on the outside temperature and heat load), selection from the fluid heat (e.g., the heating subsystem), the filing of "spent" fluid in the battery, from which the fluid is pumped back into the underground reservoir, and before injection to maintain the temperature of the collector fluid is reheated using solar or wind energy, as well as additional heaters to a temperature not lower than the temperature of the collector. For hot and cold water part of the mineralized fluid from the battery desalinate, for example using heloidesalinator, and simultaneously with the injection of another part of the fluid away from heloidesalinator on cold and hot water, while heating to the desired temperature of the subsequent heat-extraction in the heat exchangers is carried out with the use of these natural and promsie) selection of heat from the fluid to the combustion system for the required temperature of the heating and hot water (60-90oC) limits the scope of application of the method of operation of geothermal sources with sufficiently high initial temperature of the fluid (at least 70-100oC) and requires a correspondingly high temperatures heating-up "spent" fluid to the initial temperature before injection. It is associated in practice with increasing depth of wells and the costs of drilling, combined with the cost of direct heating and desalination of saline fluids reduces the efficiency of the method and limits the scope of its application areas with high geothermal temperature gradient.

In particular, the method does not allow to use the potential of geothermal heat sources moderate (20-40oC) and lower (<20oC) temperatures, the most suitable for water supply without desalination, with a wide distribution.

Use for extra geothermal fluid solar or wind energy (using the necessary energy converters) is characterized in practice, fluctuations in the intensity of these natural energy sources up to the jump for the full heating heaters, resulting in the control systems of heat and water within stystem.

Besides the use in the way of ground batteries geothermal fluid sometimes hinders the possibility of increasing the volume of discharged fluid in them and, accordingly, the heat capacity of the system due to a significant increase in investment in the storage tanks.

A device for heat and water supply, is connected to a geothermal source, comprising a heating subsystem, subsystems hot and cold water supply with battery each, the main heat pump evaporator and the condenser, installed between the geothermal source and the heating subsystem, an additional heat pump condenser and evaporator, installed between the geothermal source and subsystems hot and cold water supply. In this device the main condenser of the heat pump included in the return line of the heating subsystem, the additional capacitor heat pump is connected at the output to the battery subsystem hot water, and the primary and secondary evaporators heat pumps connected at the output to the battery (memory) subsystem cold water supply [1].

Because the specified device is using the same fluid, depending on the cooling or heating, for hot or cold water supply, technological capabilities are limited to the exploitation of geothermal sources, suitable for water supply, have, as a rule, of little depth and with temperatures below the optimal values of (25-40oC) to conduct thermotransformation heat pumps. This leads to increased consumption of more energy and drive power heat pumps. The supply of additional elements, for example, saline water desalination plant, would also lead to additional energy costs and reduce the efficiency of the device. Also implemented in this design the principle of the distribution of volumes of fluid produced from a single collector, between the evaporators and condensers, heat pumps in relation to the volume of hot and cold water hinders the possibility of independent power control of the heating-up and water supply.

These circumstances and the lack of device elements, a feedback from the geothermal source, reduce the reliability and efficiency of the device and its exp is zmozhnostej, improving the reliability and efficiency of heat - and water supply by ensuring the rational use of heat and water resources of geothermal fluids of different condition when connected to the system of additional geothermal reservoir.

This goal is achieved by the fact that in the known method of operation of a heat - and water supply with battery geothermal fluid and thermal complex of connected wells to underground geothermal reservoir, including the removal of the reservoir through the bore of the main thread and part-time additional flow of fluid, a selection from the fluid heat flow of fluid in the accumulator and the outlet part of the fluid in the supply, heating of fluid from a temperature not lower than the temperature of the manifold and the injection fluid from the accumulator to the original collector according to the invention, heating and supply battery was used for part of the day additional flow of fluid to carry out the selection from this part of the fluid warmth and simultaneously with the retraction of the main flow of fluid, the heat from the latter using the reverse heat pump cycle low-boiling working fluid and pumping the last of fluid in the source reservoir, when eter, in accordance with the temperature of the heating or hot water, using the allocated at least one additional stream of other geothermal reservoir fluid or less the same temperature, by selecting from the last fluid heat to dograma the fluid using the reverse heat pump cycle, then Doherty fluid fed into the battery fluid from another collector after selection from his warmth divert water, the rest end up in the source for the latest fluid reservoir, and the other part of the day are pumping fluid from the accumulator to the original manifold with simultaneous selection from the fluid heat including heating exhaust from another geothermal reservoir fluid to the temperature of hot water.

An additional difference is that the heating fluid prior to being fed into the battery carried by the temperature difference between ogretim fluid and cooled while fluid from the other of the geothermal reservoir, not exceeding 30-35oC, and the flow degreego fluid in the battery and the injection of fluid from the accumulator to the original collector start respectively the periods of transition system heat which refers to the fact that when the temperature of the underground reservoir below the 20oC drained out of him for submitting to the battery fluid is reheated to a temperature not exceeding 35-40oC, and the heat from the last fluid injection from the battery to the original manifold, including heating fluid from another collector to the hot water temperature, carried out using the reverse heat pump cycles.

Another difference is in the version of the way in which for accumulation Doherty up to this temperature the fluid is served in the underground collector with the same ogretim fluid temperature.

In addition, this goal is achieved by the fact that the device for heat and water supply, is connected to a geothermal source, including subsystem heating boiler, subsystems hot and cold water supply with battery each, the main heat pump evaporator and the condenser, installed between the geothermal source and heating system, an additional heat pump condenser and evaporator, installed between the geothermal source and subsystems hot and cold water supply, where the main condenser of the heat pump included in the OBR is output respectively to the battery subsystems hot and cold water supply, according to the invention an additional heat pump connected to additional geothermal source, located at a lesser depth relative to the main geothermal source, and the device is equipped with an additional battery that is installed between the secondary and primary heat pumps, and additional heat pump connected to additional geothermal source inputs evaporator and condenser via the jumper, extra battery connected to the inlet and outlet respectively to the output of the additional capacitor heat pump and to the inlet of the evaporator core of the heat pump, the additional evaporator of the heat pump is connected via a jumper on the output to the primary and secondary geothermal sources, the primary evaporator of the heat pump is connected via a jumper on the access to the additional evaporator of the heat pump and to the main geothermal source.

An additional distinctive feature of the device is that it is equipped with heat exchangers, one of which is installed between the battery and engine heating with the possibility of connecting the annulus to its back Magister hot water with the possibility of connecting the annulus to additional geothermal source via a jumper, in this case, both of the heat exchanger is installed with the possibility of connecting pipe space via the jumpers on the input and output respectively to the secondary battery and to the main geothermal source.

An additional distinctive feature of the device lies in the fact that as an option an additional battery in the device used is located at a greater depth relative to the main geothermal source of underground collector connected well through the jumper to the input of the primary evaporator of the heat pump and to the outlet of the condenser additional heat pump.

The technology, when in the first part of the day in parallel with the withdrawal of geothermal fluid from the heat supply heating another portion of the fluid conducting reduced through effective thermotransformation geothermal stream from another collector, energy costs, and a more intense thermal load, time of day work is carried out with minimum energy consumption up to their elimination, allows to improve the reliability (due to the stabilization of the extra modes), thermodynamic efficiency and effectiveness of systems of heat and bodenbiologische scheme separate exhaust heat and water flow of fluid from a separate geothermal reservoirs can be used for operation of the system heat capacity mineralized geothermal sources, unsuitable for water supply (without the additional activities on their desalination), and get additional savings by conducting extra using the heat capacity of the fluid, the employee before the bend to the supply source of low grade heat in the reverse heat pump cycle.

In addition, separate exhaust flow of fluid from private collectors in combination with convection technology flows (injected fluid) creates conditions for management degree (power) of the heating-up of the fluid regardless of the volume of water.

Resulting from the use of, for example, geothermal springs with temperatures of 20 - 40oC and low-salinity meet the standards of water supply, heating of fluid from another collector in accordance with the standards of heating and hot water (60 - 90oC), for example 5 to 10oC above the specified temperature, the conditions for the next (at a different time of day) of the said temperature norms by taking heat from degreego fluid in the heat exchangers (without the cost of additional energy). Taking into account the fact that the achievable temperature difference between ogretim bratich heat pump cycles (60oC [3] ), heating of the fluid will be reduced relative to option extra (without thermotransformation) energy expenses at the average value of the coefficients thermotransformation from 3 to 5 [3].

Implementation of the proposed method according to the variant achievements during the heating-up smaller temperature difference between Doherty and cooled fluids, not to exceed 30 - 35oC, corresponds to the most effective thermotransformation using heat pump equipment [4], providing together with the heating fluid to temperatures that meet the standards for hot water and low-temperature heating (55 - 70oC). The proposed control periods accumulation of fluid and feed fluid from the battery in accordance with night and day schedule heating taking into account the high coefficients thermotransformation during heating-up, the components at a temperature difference of 20-35oC values from 8 to 5 units [3], allows to reduce energy consumption during the heating-up, especially in the case of the implementation of the drive system of a heat supply from the mains (not from a heat engine), when night heating is preferred because of work at a lower total naked the AI geothermal springs with temperatures below 20oC method of operation of the system, heat and water can be implemented on another proposed option: with the extra fluid to a temperature not more than 35 - 40oC and subsequent selection of heat from the fluid to another part of the day using the reverse heat pump cycles. However, preliminary heating of fluid through the intermediate thermotransformations allows you to provide conditions for the effective implementation of the subsequent heat pump cycles. Thus, as in the heating-up and heat with the above conversion factors geothermal flow is reduced the energy consumption of the system.

The second part of the day, the flow of fluid from the secondary reservoir to divert extra with subsequent use on hot water. In this case, applying the same heat pumps, which leads to higher equipment utilization. Due to the extra fluid stored in the second part of the day, the volume of extraction fluid will be less (for a given heat output) and becomes acceptable for accumulation in terrestrial batteries. Because the additional energy consumption for heating fluid, constituting an increase of 20-40% to the share of consumption in but the long duration and intensive load day period of operation of the system, total energy costs for the system will be reduced by approximately 25-40%.

These circumstances lead to greater efficiency and system reliability, heat and water when working on geothermal sources with low temperature, including mineralized.

In addition, when the specified limit on the temperature of the heating-up of the fluid opens the possibility of using the method proposed variant accumulation degreego fluid located below an underground reservoir, the temperature of the heating-up is chosen in accordance with the temperature of the current collector. The method is reliable in use at sites where the primary fluid underground collector and collector battery have different temperatures, but similar mineralization (to avoid possible chemical interaction with the overflow of fluids from one collector to another). This option allows for large volumes of spent fluid to substantially reduce the cost of equipment (akkumuliruya capacity), which under some restriction on the depth of the collector-battery (for the maximum temperature of the heating-up of the fluid to 35 - 40oC depth does not exceed 1.0 to 1.5 km) are the PLO and water supply allows to realize the advantages of the proposed variants of the method and expanded operational capabilities of the system by incorporating in its design additional elements (battery and others), variants of their execution (the device is connected to the additional collector well), additional relationships between the elements of the device (jumpers, and others). This allows you to control the flow of fluid from different geothermal reservoirs according to the distinctive characteristics of the proposed method, depending on the flow rate, temperature of the fluid and the relative location of the collectors without complication of the structure of the device.

This underground accumulation of economically preferable due to the increased volume of accumulated fluid (higher heating efficiency of the device).

The supply of additional heat exchangers with the possibility to connect them instead of heat pumps, for example in the daily operation of the system of heat and water supply, will allow exploiting geothermal water with a temperature not lower than the 20oC provided that the suitability of one of them for water salinity, to carry out heating of fluids at night to temperatures, supporting the system in the day time without the cost of additional energy.

In Fig. 1 and 2 presents the scheme of the proposed method of operation of the system of heat and wate the elements in the first part of the day, for example, if night work schedule system, and Fig. 2 a fragment of the device is shown after switching elements with jumpers to work at a different time of day (jumper not shown).

In Fig. 3 shows a fragment of the device for implementing the method on other options, when the temperature of the additional collector is not less than 20oC and salinity corresponds to the norms of water supply, connection to the second part of the day instead of heat pumps (Fig. 2) heat exchangers (Fig. 3).

System heat and water supply contains thermal complex in the form of subsystem 1 heating peak degravelles, such as boiler 2, subsystem 3 hot water battery 4 and subsystems 5 cold water supply with battery 6.

In addition, the device contains the main (power) heat pump 7 evaporator 8 and a capacitor 9, installed between the geothermal source water pumping underground reservoir 10 and the heating subsystem, additional heat pump 11 to the evaporator 12 and the condenser 13, positioned between the geothermal source 10 and subsystems hot and cold water supply. This condenstation to the battery 6 and 5 subsystems hot and cold water. Thermal complex is connected via heat pumps to the underground reservoir 10 by means of the extraction and injection wells 14 and 15 (Fig. 1).

Additional heat pump 11 is connected to the additional geothermal source, for example, to the lake or to a located at a lesser depth relative to the underground reservoir 10 underground reservoir 16 through the extraction and injection wells 17 and 18 (Fig. 1).

The device is equipped with additional ground battery 19 is installed between the secondary and primary heat pumps with the ability to connect to the main source 10 through the condenser 13 and an additional source 16 through the evaporator 12.

Thus for the possibility of changing relationships between the elements of the device in different periods of his work in accordance with Fig. 1 and 2 an additional heat pump connected to additional geothermal source inputs of the evaporator 12 and condenser 13 through the jumper, extra battery 19 is connected to the input and output respectively to the output of the capacitor 13 of the heat pump 11 and to the input of the evaporator 8 heat pump 7.

The evaporator 12 of the heat pump 11 is connected otklyuchen via the jumper on the access to the geothermal reservoir 10 (using wells 15) and to the inlet of the evaporator 12 (Fig. 2).

In Fig. 1 and 2 also shows a variant of the device with an additional battery in the form of underground collector 20, which is located at a greater depth relative to the manifold 10 and connected through a bore 21 through the jumper to the output of the capacitor 13 of the heat pump 11 (Fig. 1) and to the inlet of the evaporator 8 heat pump 7 (disabled during operation in Fig. 2 wells 14 and 18 are conventionally not shown, included circulation pumps conditionally allocated blackened triangles).

Alternatively, the device can also be equipped with heat exchangers 22 and 23 (Fig. 3), while the heat exchanger 22 is installed between the battery 19 and the heating subsystem with the ability to connect the annulus, for example via a jumper, to return main engine heat, and the heat exchanger 23 is installed between the battery 19 and 4 with the ability to connect the annulus through the hole 17 to the additional collector 16. When this tube heat exchangers 22 and 23 at the outlet is connected through the bore 15 to the manifold 10, and at the entrance is through the jumper to the battery 19 (in the position of the elements of the device of Fig. 1 heat exchangers disabled and conventionally not shown) is ka thermal complex smallest (less than the cost of hot and cold water), for example, in the night mode of the system, low-temperature geothermal fluid from the underground reservoir 10 in the form of multiple threads through a hole 14 (Fig. 1) or several wells, assign to thermal complex. In fact, at least one stream of fluid (primary thermal capacity) is sent to the subsystem heating, which is served in the evaporator 8 heat pump 7, where the heat of the fluid evaporating the working fluid, with subsequent compression of the latter and the heat transfer working fluid in the condenser 9 network water coming from the return line of the heating subsystem. Chilled fluid return (fetch) in the source reservoir 10 through the borehole 15. Simultaneously with the main flow of fluid from the underground reservoir 10 assign at least one additional stream of fluid, for example, through the same borehole 14, submit it to the condenser 13 of the heat pump 11, where it is reheated by diversion into the evaporator 12 by at least one additional flow of fluid from another geothermal source (with mineralization that match the parameters of the water), for example, from a reservoir or underground reservoir 16 through the bore 17 (Fig. 1). Then Doherty fluid from kondensator 20 through the bore 21 (Fig. 1 and 2 combined both), having a temperature equal to the temperature degreego fluid. Chilled in the evaporator 12, the fluid is partially fed into the battery 6 (in the amount required for cold water during the day), the rest of the fluid injected into the source for his manifold 16 through the bore 18.

Thus, in the first part of the day concurrently with the outlet of the main flow of fluid and a selection from his heat for heating with the possibility of peak heating-up from the boiler 2 conducting heating fluid, additional exhaust flow, due to the transformation (thermotransformation) heat capacity of the low-temperature fluid from another collector that serves as a source of water supply. As a result, when the reduced cost of heating fluid from the reservoir 10 is ready for use with higher ratios thermotransformations the second part of the day, for example, in the daily chart of the operation of the system, heat and water, what with jumpers elements device connect in accordance with the scheme of Fig. 2.

When this shut off the flow of the main fluid flow, heat pump 7 is connected to the inlet of the evaporator 8, depending on the accumulation, ACC is, Ihad evaporator 12 connect through hole 15 to the collector 10, and the input capacitor 13 through the bore 17 with the reservoir 16. Feeding the fluid from the surface of the battery 19 or from the collector of the battery 20 through the hole 21 in the evaporators 8 and 12, shall take from the fluid heat with sequential actuation of its thermal capacity in the evaporator of the heat pump according to the scheme in Fig. 2 (possible option of filing a separate thread degreego fluid from the accumulator to the heat pumps and heat transfer in the condenser 9 in the return line of the heating subsystem and the capacitor 13 to the fluid discharged simultaneously through the bore 17 of the manifold 16 to the water. The "spent" fluid return (fetch) in the source reservoir 10 (during passage through which its temperature is stabilized and is close to the temperature of the collector), and fluid from the reservoir 16, is heated in the condenser of the heat pump 11 to the hot water temperature (Fig. 2) submit to the battery 4 and further to the water, creating battery 4 supply of hot water for night time. Thus, the scheme provides for the injection of substandard salinity fluid and excess water is Oh water exercise at the expense of the water in the accumulator 6, off at this time of the day from the heat pump 11 and the bore 18 (Fig. 2), or giving to the subsystem 5, the additional flow of water from the well 17.

Next, the system again transferred to night mode (Fig. 1) and is repeated in the sequence.

Another variant of the device used for the exploitation of geothermal sources with higher temperature of the upper manifold (Fig. 1), for example 20-40oC, at sites where they are moderately deep and have weak mineralization, not preventing the use for water supply.

In this case, heating of fluid from below located underground collector (Fig. 3) in the first part of the day carried out by analogy with the process steps of Fig. 1, but to a higher temperature corresponding to the temperature of the heating or hot water (60 - 90oC), for example, 5 to 10oC above these temperatures, and the parameters of the effective thermotransformation geothermal flow in the heat pump during the heating-up of the fluid, when the difference between Doherty and cooled by the flow of the fluid must not exceed the set threshold thermodynamic efficiency 60oC [3] and is, for example, 35-55ooC [3]. If necessary, achieve higher temperatures heating-up after the heat pump before the accumulation of fluid you can use peak agrevatelja, for example, the connection section of the heating-up of the boiler 2.

Because the maximum temperature of the heating-up is only necessary to ensure settlement of the heating mode when the exhaust degreego fluid from the battery 19 with the connection to the second part of the day instead of heat pumps (Fig. 2) heat exchangers 22 and 23 (Fig. 3), and later during the heating season, the temperature of the heating-up of the fluid is reduced to 40-80oC in accordance with changes in outdoor temperature. This also leads to increase conversion rates thermotransformations geothermal energy heat pump cycle. In this mode of operation the heat in the second part of the day is without the cost of additional energy due to direct heat from degreego fluid to the subsystems 1 and 3 (via heat exchangers).

To further reduce energy costs by using heat pumps driven by electric network this option is used for system process in not exceeding 30 - 35oC, and c use night power. In this embodiment, Doherty fluid in the calculation mode is supplied from the battery 19 to the heat exchangers 22 and 23 with a temperature of 55 - 70oC, which is sufficient, for example, for low temperature heating and hot water via heat exchangers.

Because recent technological variants fluid doreverse to high temperatures, for its accumulation using only ground-based batteries.

Possible options for the operation of the system in day mode diversion instead degreego fluid from the battery 19 to the heat exchanger 23 (for large volumes of hot water) and with parallel work section of the heating according to Fig. 1 (in this case, the main flow of fluid from the well 14 and the heat pump 7 in the daytime not disable), as well as in daylight mode, the maximum possible heating with boiler 2 boiler fuel, is also used to maintain the system in working condition when possible power outages or repairs).

Depending on or otherwise used variant of the proposed method and the device allow reliable operation of the system of heat and water supply p the following mineralized, with the ability to enhance the conversion of thermal potential of geothermal fluid from 3 to 9 units, reduce total energy costs by 25-40%, total operating expenses and cost of heat energy by 20-30% compared with the heat from the medium reservoir (Fig. 1) without pre-heating-up and accumulation of fluid and offline top of the header only on the water (without a supply of fluid in the heat pump).

Confirmation of the advantages provided by the invention are conducted using the latest practical data on the operation of domestic vapor compression heat pumps [5]. For example gidrogeokhimicheskikh conditions of the Central regions of Russia feasibility assessment included the technology shown in Fig. 1 and 2, when using the upper and mid reservoir depth of about 100 m and 500 m and temperatures of fluids 8, and 15oC, respectively. In the control calculations took into account two options accumulation of fluid from the secondary reservoir when it is heating-up to the 25oC: accumulation in terrestrial batteries and additional underground reservoir that has the same temperature with ogretim finem the collector is 50 g/l and above, and only the fluid from the upper reservoir suitable for water supply.

Taking into account the additional energy consumption for heating of fluid (in the calculations accounted for 27% of energy consumption for heating in night mode), modified investment in wells, storage tanks and other equipment included in the allocations for its depreciation, the estimated cost of 1 Gcal of heat energy for these options on the condition of the equipment cost and energy in the 1st quarter of 1997 and the electricity rate, for example 84 rubles per 1 kW (for agriculture) was 42 and 55 thousand rubles (the second number is for the case of underground collector-akumulatora). The last digit in relation to the two-rate tariff for urban objects (for example, 49 and 330 rubles per 1 kW night and day mode of consumption, respectively) increases to 78 thousand rubles. per 1 Gcal, which is 20-25% less in comparison with the technology implemented in the known device [1] at the same temperature of the produced fluid (8oC) fully used to heat and water.

Assessment use the same territories method of heat - and water supply variations on the way the initial temperature of the extraction of geothermal fluid (about 90-100oC) will require drilling depth-not less than 3 km, which together with put in this technology operations desalination fluid prior to draining the water makes way unlike the proposed solutions economically impractical for wide distribution, localizing the area of its application areas with high geothermal gradient.

Sources of information

1. A. C. 305327 the USSR. Installation for heat and water supply using a geothermal heat source. - Publ. 04.06.71. Bull. N 18.

2. A. C. 1548619 the USSR. The method of operation of the system of heat and power. - Publ. 07.03.90. Bull. N 9.

3. Bykov A. C., Kalnin I. M., Kruse A. C. Refrigeration machines and heat pumps (efficiency) - M: Agropromizdat, 1988, S. 260, and Fig. 5.10.

4. Heinrich G., Najork H., Nestler Century heat pump installation for heating and hot water supply// TRANS. with it. - M.: Stroiizdat, 1985. - S. 251.

5. Zubkov Century A. the Use of heat pumps in heating systems// thermal engineering, 1996, N 2, S. 17-20.

1. The method of operation of the system of heat and water supply with battery geothermal fluid and thermal complex of connected wells to underground more flows of fluid, selection from the fluid heat flow of fluid in the accumulator and the outlet part of the fluid in water, heating the fluid to a temperature not lower than the temperature of the manifold and the injection fluid from the accumulator to the original collector, characterized in that the heating and flow in the battery is used for part of the day additional flow of fluid to carry out the selection from this part of the fluid warmth and simultaneously with the retraction of the main flow of fluid, the heat from the latter using the reverse heat pump cycle low-boiling working fluid and pumping the last of fluid in the source reservoir, and the fluid is reheated before serving in the battery to temperatures higher than the temperature of the original collector, for example, in accordance with the temperature of the heating or hot water, using the allocated at least one additional stream of other geothermal reservoir fluid or less the same temperature, by selecting from the last fluid heat to dograma the fluid using the reverse heat pump cycle, then Doherty fluid fed into the battery fluid from another collector after selection of heat is withdrawn on the water, the rest of zakachivajut in the original manifold with simultaneous selection from the fluid heat including heating the withdrawn simultaneously from another collector fluid temperature hot water.

2. The method according to p. 1, characterized in that the heating fluid before it enters the battery is carried out until the temperature difference between ogretim fluid and cooled while fluid from the other of the geothermal reservoir, not to exceed 30 - 35oC, and the flow degreego fluid in the battery and the injection of fluid from the accumulator to the original collector start respectively the periods of transition systems of heat and water from day to night schedule and Vice versa.

3. The method according to p. 2, characterized in that when the temperature of the underground reservoir below the 20oC drained out of him for submitting to the battery fluid is reheated to a temperature not exceeding 35 - 40oC, and the heat from the last fluid injection from the battery to the original manifold, including heating fluid from another collector to the hot water temperature, carried out using the reverse heat pump cycles.

4. The method according to p. 3, characterized in that the accumulation Doherty fluid serves in an underground reservoir with the same ogretim fluid temperature.

5. Elimination of the boiler, subsystem hot and cold water supply with battery each, the main heat pump evaporator and the condenser, installed between the geothermal source and the heating subsystem, an additional heat pump condenser and evaporator, installed between the geothermal source and subsystems hot and cold water supply, and the main condenser of the heat pump included in the return line of the heating subsystem, and the condenser and evaporator additional heat pump connected to the output respectively to storage subsystems hot and cold water supply, characterized in that the additional heat pump connected to additional geothermal source, located at a lesser depth relative to the main geothermal source, and the device is equipped with an additional battery that is installed between the secondary and primary heat pumps, and additional heat pump connected to additional geothermal source inputs evaporator and condenser via the jumper, extra battery connected to the inlet and outlet respectively to the output of the additional capacitor replaclude via the jumper on the output to the primary and secondary geothermal sources, the primary evaporator of the heat pump is connected via a jumper on the access to the additional evaporator of the heat pump and to the main geothermal source.

6. The device under item 5, characterized in that it is equipped with heat exchangers, one of which is installed between the battery and engine heating with the possibility of connecting the annulus to its return lines through the saddle, the other heat exchanger is installed between the secondary battery and battery subsystems hot water with the possibility of connecting the annulus to additional geothermal source via a jumper, both of the heat exchanger is installed with the possibility of connecting pipe space via the jumpers on the input and output respectively to the secondary battery and to the main geothermal source.

7. The device under item 5, characterized in that as an additional battery in the device used is located at a greater depth relative to the main geothermal source of underground collector connected well through the jumper to the input of the primary evaporator of the heat pump and to the

 

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The invention relates to the use of underground heat and refers to devices that use liquid coolant

The invention relates to geothermal devices and can be used in heating systems and energy settlements

The invention relates to a power system and can be used for heating and/or hot water supply of buildings and structures in a decentralized manner
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