Device for heating liquids

 

(57) Abstract:

The device relates to a power system and can be used in heating systems and heating apparatus of the wide range of purposes. The device for heating the liquid contains a heat source with several accelerators fluid, a heat exchanger, a pump connected to the heat source through the discharge port, and a controller mounted on the pipe connecting the heat source to the heat exchanger. Part of the heat source includes a spatial distribution system, in parallel channels which are installed accelerators liquid, made with a different degree of reduction of flow area. For the distribution system downstream of the fluid installed flat grille, for example, in the form of a grid. The inner cavity of the heat generator in front of bars communicated with the surge tank. The technical result is the extension of the effective functioning of the device when the temperature and pressure in the heat. 4 C.p. f-crystals, 2 ill., table 1.

The invention relates to a power system and can be used in heating systems and heating apparatus of the wide range of purposes.

e or more series-connected working chamber. Each camera is mounted impellers of a centrifugal pump mounted on their periphery rotors, made in the form of perforated rings. In front of each rotor is fixed to the stator in the form of a perforated ring. Working chamber communicated with each other by means of diffusers (EN 5054064 C1, F 24 J 3/00, G 21 B 1/00, published 20.02.96).

The principle of operation of the described device is based on the supply of the liquid working substance into the chamber, where he is under the influence of periodically varying pressure, resulting in the formation of cavitation bubbles. During the collapse of bubbles in a liquid, energy is released.

The closest analogue of the invention is a device for heating the liquid containing the heat source, where the accelerator fluid, the working pump with electric drive provided with the heat source through the discharge port, and a heat exchanger associated with the heat source through a pipeline with a valve (EN 2045715, F 25 B 29/00, published 10.10.96).

The known device has low heat dissipation efficiency in the conditions of changing temperature and pressure of the fluid in the closed circuit when changing external conditions. This device enough apnea.

The invention is directed to extending the effective functioning of the device when the temperature and pressure in the boiler, thereby creating the conditions for maximum heat dissipation during device operation and, when the change in external factors. In addition, the task of ensuring the regulation of the process of heating the liquid in the device.

These technical results are achieved due to the fact that the device for heating the liquid containing the heat source with the accelerator fluid, the heat exchanger, the pump actuator connected to the heat source through the discharge port, and a controller mounted on the pipe connecting the heat source heat exchanger according to the present invention in the composition of the heat source includes at least one additional accelerator fluid, spatial distribution system, in parallel channels which are installed accelerators liquid, made with a different degree of reduction of the bore, and a flat grid established for the distribution system downstream of the liquid, the internal cavity of the heat generator in front of the grating is in communication with the expansion e is inalas in the range from 1.6 to 10.

As a flat grid, it is advisable to use a grid with total reduced cross-section not less than 0.6 from the bore cavity of the heat generator.

It is desirable that at least one of the accelerators fluid differed in type from other accelerators included in the distribution system. In this case, two of the accelerator can be made in the form of Venturi tubes, and the other two in the form of cylindrical channels, in which the transversely installed pins.

Hereinafter the invention is explained in the description of specific embodiments thereof and the accompanying drawings, which depict the following:

In Fig. 1 shows a structural diagram of a device for heating the liquid.

In Fig. 2 depicts the spatial distribution system with accelerators liquid.

Information confirming the possibility of carrying out the invention.

The device for heating the liquid contains heat 1 of cylindrical form, in which the spatial distribution system 2. The heat generator 1 is connected to the pressure tube 3 pump 4, which is driven by a motor 5. At the entrance to the pump 4 user 1 contains flat bars 8, through which the liquid flows to the heat exchanger 7. The inner cavity of the heat generator 1 in front of the flat bars 8 are connected hydraulically with vertically installed expansion tank 9 with detachable top flange. In four longitudinal channels of the system 2 has two accelerator fluid in the form of Venturi tubes 10 and two accelerator in the form of cylindrical channels with a transversely mounted pin 11.

The operation of the device is as follows.

First, the entire hydraulic circuit pour water through the tank 9 so that the volume of the expansion vessel remained an air cavity to be able to fill it with liquid when it is heated. After filling served voltage to the electric motor 5, the pump 4 starts to pump the working fluid, for example water, through the spatial distribution system 2 of the heat generator 1. The liquid in accelerators fluid accelerates to the occurrence of cavitation, and first in the accelerator, where the narrowing of the above. Other accelerators do not create at low temperature and pressure developed cavitation. Before flat bars 8 of the gas and partially steam bubbles rise in the surge eat the second grating 8. Before the bars 8 by turning the kinetic energy of the flow into potential energy of pressure is intense condensation of vapor in the bubble flow and separation of gas by raising the gas bubbles in the surge tank 9. When the device temperature and pressure increase, cavitation in accelerators with very limited moves in the jet, causing the flow of liquid through these accelerators is reduced and the accelerators with a lower degree of stenosis increases, they formed cavitation with individual bubbles that are most efficient from the standpoint of heat dissipation. Various forms of accelerators fluid contribute to the above effect.

Targeted transfer heat generated from the same type of accelerators fluid, such as accelerators in the form of channels with pins 11, another type of accelerators, for example in the form of Venturi tubes 10, carried by the valve 6, which also allows you to coordinate the operation of the heat exchanger 7 with the heat generator 1.

In the process, by heating the fluid expands, but when using the expansion vessel 9 cavitation continues in one of the applicable types of accelerators liquid.

the high efficiency operation at different pressures and temperatures because of their individual characteristics to accelerate the liquid to the occurrence of cavitation, ensure stable heat dissipation, complement each other, and the whole device is in condition for effective functioning of any one or group of accelerators. Personality characteristics of accelerators is mainly determined by the degree of local reduction of the flow area in the range of 1.6. . .10. The lower bound is determined by the dispersal of the liquid to cavitation, and the upper limit pressure loss and prevents the formation of stable vapor-liquid stream without condensation and, consequently, without additional heat dissipation in the fluid. Install flat grating 8 allows you to raise the front of her static pressure bubbles of steam. To further increase the degree of condensation of steam and the separation of dissolved gas is provided through the use of surge capacity, coupled with the internal cavity of the cylindrical body of the heat generator 1 in front of the flat bars 8. Square bore flat grating 8, made for example in the form of a grid, is not less than 0.6 of the bore of the cylindrical body of the heat generator 1. This condition determines the ability to convert kinetic energy of the flow in p testing device for heating the liquid, which used water made according to the present invention, shown in the table (see the end of the description)

In the table the following symbols are used:

G - water flow rate; W is the electrical power supplied to the pump; tOS- the ambient temperature in the room; tTg- temperature water boiler; W is the heat capacity of the device; - heating time.

The tests have shown high efficiency of the proposed method, which does not depend on the ambient temperature and time of heating. The conductivity of the device based on the patented invention is not less than 106cal/h

Thus, patent-pending device for heating the liquid improves the efficiency of heat dissipation during start-up the device and changing the pressure and temperature in the heat.

Industrial applicability.

A device for heating a liquid according to the present invention can be used in heat and power plants for various purposes, such as heating systems, domestic stand-alone installations, industrial is generator with accelerator fluid, the heat exchanger, the pump is electrically connected to the heat source through the discharge port, and a controller mounted on the pipe connecting the heat source heat exchanger, characterized in that the heat source includes at least one additional accelerator fluid, spatial distribution system, in parallel channels which are installed accelerators liquid, made with a different degree of reduction of the bore, and a flat grid established for the distribution system downstream of the liquid, while the inner cavity of the heat generator in front of bars communicated with the surge tank.

2. The device under item 1, characterized in that the degree of reduction of the flow area of the various accelerators varies in the range from 1.6 to 10.

3. The device under item 1, characterized in that as a flat grid is the grid with the total reduced cross-section not less than 0.6 from the bore cavity of the heat generator.

4. The device under item 1, characterized in that at least one of the accelerators of the liquid is different in type from the other accelerators included in the distribution system.


 

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FIELD: energy transformation.

SUBSTANCE: sun power plant intends for conversing solar energy to thermal energy for using thermal energy for domestic appliances. Hot water supply sun power plant has at least one solar battery made of thermal collectors in form heat-insulated flat box-shaped cases. Top flat light-transparent panels are disposed in perpendicular to direction of sun light. Light-transparent panels are disposed above membranes-absorbers which absorb solar radiation. Membranes-absorbers are provided with temperature transducers. Membranes-absorbers have parallel lateral metal pipes for liquid heat carrier. Pipes are connected together in any membrane-absorber by longitudinal tubular collectors. Collectors are connected together by branches in series through drive stop valves which are connected to pipeline of water discharge of warmed liquid heat carrier which is connected with top area of heat-accumulating container. Lower area of container is connected with longitudinal tubular collector of membrane-absorber of one of end heat collector by means pipeline for supplying cooled liquid heat carrier through circulation pump. Heat water supply and heating system heat exchangers are disposed at top area of heat-collecting container one above another. Heat exchangers are connected with central heating system pipeline and with pipeline for supplying warmed running water. Program electron unit of the plant is connected with temperature transducers of membranes-absorbers, which unit controls operation of thermal transducers, circulation pump electric motor and drives of stop valves. Sun power plant is provided with heat-proof heat-accumulating members that are disposed uniformly in lower area of heat-accumulating container. Heat-accumulating members are filled with liquid having positive solidification temperature. Program electron unit is provided with mechanisms for tracking perpendicularity of solar energy to surface of top light-transparent panels of thermal collectors. Heat-insulated flat box-shaped cases of collectors are made for rotation around horizontal axes disposed at two mutually perpendicular vertical planes. Any membrane-absorber is made in form of thin-walled metal plate with gofers which embrace parallel lateral metal pipes for liquid heat carrier. Space V of heat-insulated working cavity of heat-accumulating container exceeds total space Vtot of cavities of membranes-absorbers of heat collectors for liquid heat carrier, space V1 of hot water heat exchanger for domestic appliances, space V2 of heating system heat exchanger and total space Vh-am of heat-collecting member for 50-400, 100-120, 20-30 and 10-20 times correspondingly. Total area Stot of external surfaces of the heat exchangers is 3-8 times larger than areas Sm of top surfaces of rigid membranes-absorbers. Solidification temperature T of liquid which fills heat-proof heat-accumulating members equals to 35-600C.

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