Hot water supply sun power plant

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.

EFFECT: improved efficiency of heating process; lower speed of heat carrier cooling.

7 cl, 3 dwg

 

The invention relates to the field of solar energy conversion into heat using the latest for municipal and domestic needs of the population.

Known from the patent of the Russian Federation No. 2045714, CL6F 24 J 2/42, 1992 bypass the solar collector hot water containing a circulating coolant circuit as set consistently collector field, the heating element capacitive heat exchanger, circulation pump, and the contour of the heated water in the form of series-connected discharge pipe cold water annulus velocity heat exchanger and hot water pipes, in which the tube bundle high-speed heat exchanger downstream of the coolant is turned on before the heating element capacitive heat exchanger, and the last cavity is included in the course of the heated water before the annular space velocity of the heat exchanger.

The disadvantages of this double-loop solar hot water systems are low thermal efficiency and the use of the backup heater.

It is also known from the patent of the Russian Federation No. 2187050, CL7F 24J 2/42, 2001. a solar heating system, solar collectors, tank battery placed in it a heat exchanger, a pump for pumping Talanov the El and associated piping and equipment, and collectors are installed below the heat exchanger in the form of capacity developed with the outer surface, pipelines connecting the collectors to the heat exchanger and pump are shut-off elements, providing alternate education circuit collector-heat exchanger or circuit pump - collectors - heat exchanger - expansion tank.

The disadvantages of this solar heating system are limited scope, low efficiency and lack of functioning in the warm season due to the natural circulation of the coolant when it is heated, without the use of a pump.

The closest in technical essence to the proposed solar power plant hot water is known submitted to the Federal Institute of industrial property, Russian Federation patent application No. 2003100291, CL7F 24 J 2/42, the claims being published, 10.08.2004, solar power plant hot water containing at least one solar panel of thermal collectors in the form of insulated flat box-shaped buildings located perpendicular to the direction of solar radiation top flat translucent panels above them parallel absorbing solar radiation and having a temperature on tchiki membranes-absorbers with parallel transverse metal tubes for the liquid coolant, United in each membrane absorber longitudinal tubular collectors connected to each other through pipes in series across the drive shut-off valves connected to the pipeline selection of heated liquid coolant associated with the upper zone of the heat storage capacity, the lower zone of said tank is connected through a supply pipe cooled liquid coolant through the coolant circulation pump with a longitudinal tubular collector membrane-absorber of one of the extreme thermal collectors placed in the upper zone of the heat storage containers one above the other heat exchangers heating and hot water for household needs, connected respectively to the pipes of the Central heating and the supply line is heated for domestic use running water and associated with temperature sensors of membrane absorbers software electronic control device thermal sensors, the motor of the circulating pump and the actuator isolation valves.

The disadvantages of this solar hot water is its low efficiency due to the small and uneven removal of thermal energy from one heat absorbing surface of the solar collectors during the light period of day and lack of funds, amalaysia processes cooling the liquid coolant in the dark period of the day in the working cavity thermal storage capacity.

The task of the invention is to increase the efficiency of processes of heating the liquid coolant and slowing the rate of cooling in the working cavity thermal storage capacity.

These goals are achieved by the fact that the solar power plant hot water containing at least one solar panel of thermal collectors in the form of insulated flat box-shaped buildings located perpendicular to the direction of solar radiation top flat translucent panels above them parallel absorbing solar radiation and having a temperature sensor membranes-absorbers with parallel transverse metal tubes for the liquid coolant, United in each membrane absorber longitudinal tubular collectors connected to each other through pipes in series across the drive shut-off valves connected to the pipeline selection of heated liquid coolant associated with the upper zone of the heat storage capacity, when this lower zone of said tank is connected through a supply pipe cooled liquid coolant through the coolant circulation pump with a longitudinal tubular collector membrane-absorber of one of the extreme thermal collectors placed at the top of the AOR is e thermal storage containers one above the other heat exchangers heating and hot water for household needs, connected respectively to the pipes of the Central heating and the supply line is heated for domestic use water flow, and associated with temperature sensors of membrane absorbers software electronic control device thermal sensors, the motor of the circulating pump and the actuator isolation valves supplied are placed evenly in the bottom zone of the heat storage vessel pressurized thermal storage elements, liquid filled with positive temperature hardening, software and electronic device - tracking mechanisms perpendicularity of solar radiation surface of the upper glass panels, thermal collectors, insulated flat box-shaped housing which is made rotatable about a horizontal axis located in two mutually perpendicular vertical planes, each membrane absorber in the form of a thin metal plate with corrugations covering parallel transverse metal tube for the liquid coolant, and the volume V insulated working cavity thermal storage capacity exceeds a total volume of Vsumcavities membrane absorbers thermal collectors for liquid coolant, volume V1heat exchanger hot water for Etowah needs volume V2a heat exchanger of the heating system and the total volume Vtethermal storage elements, respectively, in the 50-400, 100-120, and 20-30 10-20 times, and the total area of Stotalthe outer surfaces of the above-mentioned heat exchanger exceeds the sum of the squares of Smupper surfaces of the above-mentioned rigid membrane absorbers 3-8 times, and the temperature T of the solidification liquid filling sealed heat storage elements is 35-60°C.

In addition, the solar power plant hot water each heat exchanger can be made in the form of a coil on the upper surface of each of the absorbing solar radiation membrane-absorber may be applied to the selective coating and/or painted black, and the volume V1heat exchanger hot water for domestic purposes may be less than the volume V2a heat exchanger of the heating system in the 2.5-6.0 times, at the same time as the liquid coolant may be used water, and pressurized thermal storage elements filled with paraffin.

1 schematically shows a solar station for hot water; figure 2 - General view of the heat collector in an enlarged scale; figure 3 is a cross-section in figure 2.

Solar power plant hot water is from solar cells 1 formed of several thermal collectors, shall each of them is made in the form of a turning point in two mutually perpendicular vertical planes insulated flat box-shaped housing 2 with the mechanism 3 tracking software electronic control unit 4 its perpendicularity relative to the direction of solar radiation, the upper translucent panel 5 insulated flat box-shaped housing 2. Under the translucent panel 5 in insulated flat box-shaped housing 2 parallel to it with a minimum gap is having temperature sensors 6 membrane-absorber in absorbing solar radiation thin metal plate 7 with corrugations 8 and covered the last parallel transverse tubes 9 for the passage of the liquid coolant. On the lower surface of the membrane absorber caused the insulation layer 10, and the ends are parallel to the transverse tubes 9 of each membrane-absorber integrated longitudinal tubular manifolds 11. Between the translucent panel 5 and the thin metal plate 7 placed around the perimeter of the seal 12. Tubular reservoir 11 through pipes 13 are connected to each other through a transmission shut-off valves 14, connected to the pipe 15 selection of heated liquid coolant. The pipeline 15 selection of the heated liquid coolant is connected to the top area of insulated cavity 16 thermal storage tank 17, the lower area mentioned cavity 16 is connected through a pipe 18 feeding the cooled liquid coolant h is cutting the circulation pump 19 with the inlet 13 of the longitudinal tubular manifold 11 sets of parallel transverse metal tubes 9 membrane-absorber of one of the extreme thermal collectors. In the upper zone insulated cavity 16 thermal storage tank 17 arranged one above the other, the heat exchanger 20 of the heating system and the heat exchanger 21 hot water for household needs, connected respectively to the line 22 Central heating and pipeline 23 supply of running water, heated for domestic use. In the lower zone insulated cavity 16 thermal storage tank 17 is placed evenly around the perimeter sealed heat storage elements 24, fluid-filled 25 with a positive temperature solidification. Volume V insulated working cavity 16 thermal storage tank 17 exceeds the total volume Vsumcavities of sets of parallel transverse metal tubes 9 for the passage of liquid coolant membrane absorbers heating collectors, volume V1heat exchanger 21 hot water for household needs, the volume V2heat exchanger 20 of the heating system and the total volume Vteheat-retaining elements 24, respectively, in the 50-400, 100-120, and 20-30 10-20 times. The total area of Stotalthe outer surfaces of the above-mentioned heat exchangers 20 and 21 is greater than the sum of the areas of Smthe upper surfaces of the hard membrane 3-8 times. The temperature T of the solidification liquid filling sealed heat storage elements 24, the composition is employed, 35-60C° .

Works solar power plant hot water as follows. Before the beginning of its operation, install the chassis 2 thermal collectors using 3 tracking software of the electronic control device 4 perpendicularity relative to the direction of solar radiation. In summer, the optimal tilt angle thermal collectors to the horizon is 30-40°and in winter 60-70° for middle latitudes of the Northern hemisphere. The next step of switching a solar hot water is filling liquid coolant heat storage tank 17, 18 pipe feeding the cooled liquid coolant through the coolant circulation pump 19 in the cavity membranes thermal collectors for liquid coolant and tubing 15 selection of heated liquid coolant. Then fill with water piping 22 Central heating with heat exchanger 20 and line 23 of the feed flowing heated water for domestic purposes by the heat exchanger 21. Then turn off the circulation pump 19. Solar radiation passing through the translucent panel 5 buildings 2, decreases with temperature sensors 6 membrane-absorbers in the form of absorbing solar radiation of thin metal plates 7 with corrugations 8 and heats the filling of parallel transverse the metal tube 9 heat-transfer fluid. When the temperature of the liquid coolant in any of the heat collector reaches the set of positive temperature, fixed temperature sensor 6, is activated software electronic control unit 4. This software electronic control unit 4 includes a circulation pump 19 and the drive opens the shut-off valve 14 connected to the pipe 15 selection of heated liquid coolant of the corresponding pipe 13, thus heated liquid coolant is discharged at last in the heat storage tank 17. At the same time cool the liquid coolant fills the heat collector, which is given the heated heat-transfer fluid. After completing this heat collector liquid coolant circulation pump 19 is switched off and the drive shut-off valve 14 is returned to its original position, that is, the pipe 13 becomes reduced, and the pipe 15 selection of the heated liquid coolant is blocked this drive shut-off valve 14. Thus the heat storage tank 17 is gradually filled with the heated liquid coolant that is circulating in the heat storage tank 17, heats simultaneously placed in the cavity of the heat exchanger 20 of the heating system, the heat exchanger 21 hot water for domestic use, is connected respectively to the pipes 22 Central heating and pipeline 23 supply of running water, heated for domestic use, and pressurized thermal storage elements 24. Consumption of thermal energy for heating and domestic water supply is regulated by valves 26, mounted on the line 22 of Central heating and pipe 23 supply of running water, heated for domestic use.

The proposed solar power plant hot water improves the efficiency of conversion of solar energy into thermal energy not only by improving thermal performance, but also due to the electoral system exhaust heated liquid coolant from the heat reservoir through the drive shut-off valves 14, connected to the pipe 15 selection of heated liquid coolant, and use this circulation pump 19 for forced circulation of the liquid coolant in the membranes of the absorbers and compensate for heat losses at cooling the liquid coolant in the heat storage tank 17 through the return heat sealed heat storage elements 24.

1. Solar power plant hot water containing at least one solar panel of thermal collectors in the form of insulated flat box-shaped buildings located perpendicular to the direction of solar radiation top flat translucent panels above them parallel absorbing solar radiation and having a temperature sensor membranes-absorbers with parallel transverse metal tubes for the liquid coolant, United in each membrane absorber longitudinal tubular collectors connected to each other through pipes in series across the drive shut-off valves connected to the pipeline selection of heated liquid coolant associated with the upper zone of the heat storage capacity, the lower zone of said tank is connected through a supply pipe cooled liquid coolant through the coolant circulation pump with a longitudinal tubular collector membrane-absorber of one of the extreme thermal collectors placed in the upper zone of the heat storage containers one above the other heat exchangers heating and hot water for household needs, connected respectively to the pipes of the Central heating and the supply line is heated for domestic use running water and associated with temperature sensors of membrane absorbers software electronic control device thermal sensors, the motor of the circulating pump and the actuator isolation valves, characterized in that it has placed evenly in the bottom zone of the heat storage vessel pressurized thermal storage elements, liquid filled with positive temperature hardening, software and electronic device - the mechanisms of transportation (bus who I perpendicularity of solar radiation surface of the upper glass panels, thermal collectors, insulated flat box-shaped housing which is made rotatable about a horizontal axis located in two mutually perpendicular vertical planes, each membrane absorber is in the form of thin metal plates with corrugations covering parallel transverse metal tube for the liquid coolant, and the volume V insulated working cavity thermal storage capacity exceeds a total volume of Vsumcavities membrane absorbers thermal collectors for liquid coolant, volume V1heat exchanger hot water for household needs, the volume V2a heat exchanger of the heating system and the total volume Vtethermal storage elements, respectively, in the 50-400, 100-120, and 20-30 10-20 times, and the total area of Stotalthe outer surfaces of the above-mentioned heat exchanger exceeds the sum of the squares of Smupper surfaces of the above-mentioned rigid membrane absorbers 3-8 times, the temperature T of the solidification liquid filling sealed heat storage elements is 35-60C°.

2. The solar power plant according to claim 1, characterized in that as the liquid coolant use water.

3. The solar power plant according to claim 1, characterized in that the heat storage elements filled with paraffin.

4. The solar power plant according to claim 1, the call is connected with the fact, each heat exchanger in the form of a coil.

5. The solar power plant according to claim 1, characterized in that on the upper surface of each of the absorbing solar radiation of thin metal plates with the corrugations of the membrane-absorber caused the selective coating and/or painted black.

6. The solar power plant according to claim 1, characterized in that the volume V1heat exchanger hot water for domestic purposes is less than the volume V2a heat exchanger of the heating system 2.5 to 6.0 times.



 

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