CN204810229U - Solar photovoltaic power generation system's cooling system - Google Patents
Solar photovoltaic power generation system's cooling system Download PDFInfo
- Publication number
- CN204810229U CN204810229U CN201520554363.XU CN201520554363U CN204810229U CN 204810229 U CN204810229 U CN 204810229U CN 201520554363 U CN201520554363 U CN 201520554363U CN 204810229 U CN204810229 U CN 204810229U
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- China
- Prior art keywords
- working medium
- solar
- temperature meter
- solar energy
- heat exchanger
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/60—Thermal-PV hybrids
Abstract
The utility model provides a solar photovoltaic power generation system's cooling system, including the solar photovoltaic board, set up in the working medium evaporimeter of solar photovoltaic board below, the working medium evaporimeter forms circulation circuit with working medium condenser, frequency conversion working medium pump, is equipped with water heat exchanger in the working medium condenser, is equipped with the evaporating temperature meter on the working medium evaporimeter, is equipped with the condensing temperature meter in the working medium condenser, and evaporating temperature meter, condensing temperature meter and frequency conversion working medium pump are connected with the main control computer respectively. The utility model discloses in can realizing the use in many seasons of solar energy long term effect, possess the effect that improves its photovoltaic power generation efficiency, promoted solar energy and utilized system's productivity, can keep the convenient method of operation of cleanness of system simultaneously, circulate the simultaneously phase transition heat transfer of medium will greatly reduce the heat exchanger area of solar cooling heat exchanger, improve cooling system by a relatively large margin.
Description
Technical field
The utility model relates to a kind of cooling system, is specifically related to a kind of cooling system of solar photovoltaic generation system.
Background technology
The device fabrication of all kinds of solar energy power generating of current China and running technology technology maturation, and use extensively.As the solar energy occupation mode that electricity generation system is extremely convenient for cleaning.But the defect of this kind of solar energy utilization system mode is: the generating efficiency of system is along with the temperature change of photovoltaic panel, and the efficiency of generating also changes, and whenever working temperature raises 1 DEG C, generating efficiency will decline 0.4%.Be generally 1kW/m when solar illuminating intensity
2time, 0.8m
2the energy output of solar energy photovoltaic panel when 20-25 DEG C of working temperature count roughly 160W, remaining solar energy is converted into heat and is stored in photovoltaic panel, cause the working temperature of solar energy photovoltaic panel when summer can reach more than 70 DEG C, the working temperature in winter can reach more than 50 DEG C.Can find out based on above operation conditions, the actual power efficiency of solar energy photovoltaic panel can produce great decline, and the compared with normal temperature of working during summer increases about 50 DEG C, and its generating efficiency will decline 50*0.4%=20%; Even if work time in the winter time, compared with normal temperature increases about 30 DEG C, and its generating efficiency will decline 30*0.4%=12%.The heat accumulation of visible solar photovoltaic generation system causes the rising of working temperature, is the principal contradiction affecting its energy output.
The major technique of current this difficult problem of solution adopts water cooled circulating system, is put in environment by the heat of generation by cooling water drainage.This kind of mode can improve the working temperature of solar energy photovoltaic panel, improves electrogenesis amount; But the defect of this kind of mode is that the internal circulating load of cooling water is comparatively large, and need the water pump operation that power consumption is higher, the volume of auxiliary device also can be larger simultaneously.
Utility model content
In order to solve problems of the prior art, the utility model provides a kind of cooling system of solar photovoltaic generation system, and the cooling system internal circulating load overcoming solar photovoltaic generation system in prior art is comparatively large, the problem that power consumption is higher.
The technical solution of the utility model is: a kind of cooling system of solar photovoltaic generation system, comprise solar energy photovoltaic panel, be arranged at the working medium evaporator below solar energy photovoltaic panel, working medium evaporator and working fluid condenses device, frequency conversion working medium pump form circulation circuit, water-to-water heat exchanger is provided with in working fluid condenses device, working medium evaporator is provided with evaporation thermometer, is provided with condensing temperature meter in working fluid condenses device, and evaporation thermometer, condensing temperature meter are connected with main control computer respectively with frequency conversion working medium pump.
The beneficial effects of the utility model are: the type of cooling that the utility model proposes, and are to use organic media to complete the transmission of cooling heat, and its thermal cyclic carrier is a kind of low boiling point working medium.Can realize the phase transformation evaporation of circulatory mediator thus, the gaseous fluid of corresponding generation elevated pressures and temperature, under the effect of condenser, condensation is become the liquid under uniform pressure by cycle fluid; Utilize frequency conversion working medium pump to increase the pressure of liquid, make it get back in working medium evaporator and continue heat absorption.Due to the phase-change heat-exchange mode in working medium evaporator and condenser, can make the heat transfer intensity of working medium comparatively single-phase water exceed tens times, will certainly simplify and reduce the volume of heat transmission equipment like this, the effect of phase-change heat-exchange heat transfer temperature difference also can be less than single-phase water simultaneously, its result can make the temperature of solar energy photovoltaic panel obtain larger reduction, and then its generating efficiency can be improved better.
The cooling system of the solar photovoltaic generation system of this utility model proposition, while reduction solar photovoltaic system working temperature, can continue to reclaim cooling heat for generating and heat supply, the solar energy utilization ratio of original system is obtained improve greatly, and the impact in period and season can be utilized, reach the pattern of whole year operation, the year utilance of such equipment also will obtain and greatly improve, can greatly increase annual output energy rate thus, make the utilance of solar energy whole year reach maximization, the operational mode easy to clean of system can be maintained simultaneously.The phase-change heat-exchange of circulatory mediator, by greatly reducing the heat exchanger area of solar energy cooling heat exchanger, improves cooling system greatly simultaneously.
Accompanying drawing explanation
The cooling system process chart of Fig. 1 the utility model solar photovoltaic generation system;
Wherein 1, solar energy photovoltaic panel; 2, working medium evaporator; 3, working fluid condenses device; 4, water-to-water heat exchanger; 5, frequency conversion working medium pump; 6, water inlet; 7, delivery port; 8, main control computer; 9, condensing temperature meter; 10, evaporation thermometer.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the cooling system of solar photovoltaic generation system of the present utility model, comprise solar energy photovoltaic panel 1, be arranged at working medium evaporator below solar energy photovoltaic panel 1 and working fluid condenses device 3, frequency conversion working medium pump 5 form circulation circuit, water-to-water heat exchanger 4 is provided with in working fluid condenses device 3, working medium evaporator 2 is provided with evaporation thermometer 10, is provided with condensing temperature meter 9 in working fluid condenses device 3, and evaporation thermometer 10, condensing temperature meter 9 are connected with main control computer 8 respectively with frequency conversion working medium pump 5.
When solar energy photovoltaic panel power generation operation, system master machine 8 starts frequency conversion working medium pump 5 by according to the upper limit of evaporation thermometer 10 index signal up to standard, cryogenic high pressure liquid refrigerant is transported in working medium evaporator 2, cryogenic high pressure liquid refrigerant is a large amount of heat absorbed in solar energy photovoltaic panel in working medium evaporator 2, explosive evaporation is high pressure gaseous working medium, and its working temperature is declined; High pressure gaseous working medium implements condensation heat release through working fluid condenses device 3 and the water-to-water heat exchanger 4 in it, and working medium will by isobaric liquid condensed, then through frequency conversion working medium pump 5 adherence pressure, send back in working medium evaporator 2, continues solar energy photovoltaic panel cooling heat transferring.Main control computer 8 will regulate the flow of frequency conversion working medium pump 5 by condensing temperature meter 9, to reach maximum cooling effect.
Embodiment
If certain solar photovoltaic generation system is implemented in Efficiency in Buildings in Tianjin Area to run, design conditions are by standard photovoltaic panel 0.8m
2, the working temperature that standard energy output 160wh/h is corresponding is 20 DEG C, and working temperature often raises 1 DEG C, and photovoltaic efficiency will decline 0.4%; The heat-collecting capacity of each photovoltaic panel accounts for 70% of solar energy total radiation.Without photovoltaic generating system energy output computational chart under cooling condition in table 1, if select cycle fluid to be R123 in system of the present utility model, its coolant physical parameter table at summer, winter and spring and autumn is in table 2; Under cooling condition, photovoltaic generating system energy output computational chart is in table 3.
Table 1: without photovoltaic generating system energy output computational chart under cooling condition
Table 2: coolant physical parameter table
Table 3: photovoltaic generation+cooling system energy output computational chart
Note: increment rate=year hot energy output/without photovoltaic power generation quantity actual under cooling condition
Calculating example shows, Data-Statistics per year, every 0.8m
2unit photovoltaic power generation plate, under increase cooling condition, can make solar energy power generating amount increase:
280-244.78=35.22kWh/ year
Energy output increment rate is: 35.22/244.78*100=14.4%
Data-Statistics per year, every 0.8m
2unit photovoltaic power generation plate increase cooling condition under, year comprehensive electric generating loss amount drop to 5% by original 15%.Can draw thus, every 0.8m
2the year comprehensive electric generating recruitment of unit photovoltaic power generation plate is:
282.35-244.78=37.57kWh/ year
Energy output annual increment rate is: 37.57/244.78*100=15.34%
Although be described preferred embodiment of the present utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, can also make a lot of form, these all belong within protection range of the present utility model.
Claims (1)
1. the cooling system of a solar photovoltaic generation system, it is characterized in that, comprise solar energy photovoltaic panel, be arranged at the working medium evaporator below solar energy photovoltaic panel, working medium evaporator and working fluid condenses device, frequency conversion working medium pump form circulation circuit, and be provided with water-to-water heat exchanger in working fluid condenses device, working medium evaporator is provided with evaporation thermometer, be provided with condensing temperature meter in working fluid condenses device, evaporation thermometer, condensing temperature meter are connected with main control computer respectively with frequency conversion working medium pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520554363.XU CN204810229U (en) | 2015-07-27 | 2015-07-27 | Solar photovoltaic power generation system's cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520554363.XU CN204810229U (en) | 2015-07-27 | 2015-07-27 | Solar photovoltaic power generation system's cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204810229U true CN204810229U (en) | 2015-11-25 |
Family
ID=54594979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520554363.XU Expired - Fee Related CN204810229U (en) | 2015-07-27 | 2015-07-27 | Solar photovoltaic power generation system's cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204810229U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945372A (en) * | 2019-04-12 | 2019-06-28 | 浙江工业大学 | A kind of high-efficiency solar isopentane air-conditioning system |
-
2015
- 2015-07-27 CN CN201520554363.XU patent/CN204810229U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945372A (en) * | 2019-04-12 | 2019-06-28 | 浙江工业大学 | A kind of high-efficiency solar isopentane air-conditioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20160727 |