CN209978258U - Pentafluoropropane photovoltaic and photo-thermal integrated heat pump circulation system - Google Patents
Pentafluoropropane photovoltaic and photo-thermal integrated heat pump circulation system Download PDFInfo
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- CN209978258U CN209978258U CN201920783553.7U CN201920783553U CN209978258U CN 209978258 U CN209978258 U CN 209978258U CN 201920783553 U CN201920783553 U CN 201920783553U CN 209978258 U CN209978258 U CN 209978258U
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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
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses a pentafluoropropane photovoltaic light and heat integration heat pump circulation system, including circulation system and underground circulation system on the ground, circulation system includes scroll compressor, four-way reversing valve, first heat exchanger, second heat exchanger, photovoltaic power generation board and pipeline on the ground, the laminating of photovoltaic power generation board back sets up the photovoltaic power generation board heat exchanger, scroll compressor passes through the pipeline and links to each other with four-way reversing valve, four-way reversing valve links to each other with first heat exchanger and second heat exchanger through the pipeline respectively, photovoltaic power generation board heat exchanger's exit links to each other with first heat exchanger and second heat exchanger through the pipeline respectively, be full of heat transfer medium in the pipeline, and heat transfer medium adopts pentafluoropropane. The utility model has the advantages that: the heat dissipation of the photovoltaic panel can be effectively enhanced, and the efficiency and the generating capacity of the photovoltaic cell are improved.
Description
Technical Field
The utility model relates to a heat pump circulation system technical field, concretely relates to pentafluoropropane photovoltaic light and heat integration heat pump circulation system.
Background
The solar radiation energy accepted by the terrestrial surface of China every year is about 50 x 10^18KJ, the total annual solar radiation amount across the country reaches 335-837 KJ/cm & a, and the median is 586 KJ/cm & a. Solar energy utilization modes comprise photovoltaic power generation, photo-thermal power generation, solar energy heat utilization and the like, and the solar photovoltaic power generation is a novel technology which is pollution-free, does not need fuel and can directly obtain electric energy, and is one of the technologies with the most application prospect in the solar energy utilization modes. The international energy department predicts that the proportion of solar photovoltaic power generation in world power production will reach 1% by 2020, and can reach about 25% in 2050. The photovoltaic panels currently used in the market are mainly single crystal silicon panels and polycrystalline silicon panels, wherein the radio-television conversion efficiency of the single crystal silicon photovoltaic panels is mostly below 20%, and the efficiency of the polycrystalline silicon panels is more commonly below 18%. In addition, the temperature rise loss of the photovoltaic panel is between 0.4% and 0.5% per degree centigrade.
Most household photovoltaic equipment in the market at present is not designed with a panel cooling system, so that the temperature of the panel surface of the household photovoltaic equipment in the 12 th to 16 th periods with higher irradiation intensity can be greatly increased along with the increase of the air temperature and the irradiation intensity, and the photoelectric conversion efficiency can be reduced. Aiming at the situation, the photovoltaic panel heat dissipation can be effectively enhanced, the efficiency and the generating capacity of photovoltaic equipment are improved, indoor heat can be further taken away, and the effect of air conditioning cooling is achieved. Through system optimization design, a low-grade heat source is utilized, and a heat pump circulation mode is started to supply heat indoors under the condition of low temperature in winter, so that the advantages of the system are fully exerted, and the system has strong practical significance and popularization value.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a rational in infrastructure, design benefit's a pentafluoropropane photovoltaic light and heat integration heat pump circulation system.
The technical scheme of the utility model as follows:
the utility model provides a pentafluoropropane photovoltaic light and heat integration heat pump circulation system, its characterized in that, includes circulation system and underground circulation system on the ground, circulation system includes scroll compressor, four-way reversing valve, first heat exchanger, second heat exchanger, photovoltaic power generation board and pipeline on the ground, the laminating of photovoltaic power generation board back sets up the photovoltaic power generation board heat exchanger, scroll compressor passes through the pipeline and links to each other with four-way reversing valve, four-way reversing valve links to each other with first heat exchanger and second heat exchanger through the pipeline respectively, photovoltaic power generation board heat exchanger's exit links to each other with first heat exchanger and second heat exchanger through the pipeline respectively, be full of heat transfer medium in the pipeline, and heat transfer medium adopts pentafluoropropane.
The pentafluoropropane photovoltaic and photothermal integrated heat pump circulation system is characterized in that the underground circulation system comprises a constant-temperature underground water source, a circulating pump, a second heat exchanger and a pipeline, wherein the circulating pump is connected with the constant-temperature underground water source through the pipeline, the second heat exchanger is connected with the circulating pump through the pipeline, and the second heat exchanger is connected with the constant-temperature underground water source through the pipeline.
The pentafluoropropane photovoltaic and photothermal integrated heat pump circulation system is characterized in that an electromagnetic valve and a flow control meter are arranged on a pipeline between the second heat exchanger and the photovoltaic power generation plate.
The utility model provides a pentafluoropropane photovoltaic light and heat integration heat pump circulation system, a serial communication port, photovoltaic power generation board heat exchanger is responsible for, sets up the heat exchanger coil pipe of being responsible for both sides in intaking including intaking, heat exchanger coil pipe one end is responsible for with intaking respectively and is linked together, and the other end is equipped with the delivery port respectively.
The pentafluoropropane photovoltaic and photothermal integrated heat pump circulation system is characterized in that the first heat exchanger is arranged indoors, and the second heat exchanger is arranged outdoors.
The pentafluoropropane photovoltaic and photothermal integrated heat pump circulation system is characterized in that the photovoltaic power generation plate comprises a photovoltaic cell module, a radiation coating layer and a glass cover plate which are sequentially arranged.
The utility model has the advantages that:
1) the system can effectively enhance the heat dissipation of the photovoltaic panel and improve the efficiency and the power generation capacity of the photovoltaic cell.
2) The system can cool the indoor in summer and can utilize low-grade heat sources to supply heat to the indoor in winter.
3) The system can reduce energy consumption generated by refrigeration equipment such as an air conditioner and the like, is suitable for working condition requirements in different seasons, can improve the utilization rate of clean energy while saving electric energy, meets the requirement of green environmental protection, and has very important significance and popularization value.
Drawings
FIG. 1 is a system model diagram of the present invention;
FIG. 2 is a schematic diagram of the system of the present invention;
FIG. 3 is a cross-sectional structural profile of a photovoltaic panel of the present invention;
FIG. 4 shows a structural diagram of a photovoltaic plate heat exchanger of the present invention;
FIG. 5 is a data simulation diagram of the phase change section of the heat exchanger of the present invention;
in the figure: 1-a scroll compressor; a 2-four-way reversing valve; 3-a first heat exchanger; 4-a photovoltaic power generation panel; 5-a flow control meter; 6-electromagnetic valve; 7-a second heat exchanger; 8-a circulating pump; 9-constant temperature underground water source.
Detailed Description
The invention is further described with reference to the accompanying drawings.
As shown in fig. 1-5, a pentafluoropropane photovoltaic and photothermal integrated heat pump circulation system comprises a scroll compressor 1, a four-way reversing valve 2, a first heat exchanger 3, a photovoltaic power generation plate 4,
The system comprises a flow control meter 5, an electromagnetic valve 6, a second heat exchanger 7, a circulating pump 8 and a constant-temperature underground water source 9.
A pentafluoropropane photovoltaic and photothermal integrated heat pump circulating system comprises an overground circulating system and an underground circulating system;
the overground circulating system comprises a scroll compressor 1, a four-way reversing valve 2, a first heat exchanger 3, a second heat exchanger 7, a photovoltaic power generation plate 4 and pipelines, wherein the photovoltaic power generation plate 4 comprises a photovoltaic cell module 403, a radiation coating layer 402 and a glass cover plate 401 which are sequentially arranged.
The back of the photovoltaic power generation plate 4 is provided with a photovoltaic power generation plate heat exchanger 404 in a laminating manner, the scroll compressor 1 is connected with the four-way reversing valve 2 through a pipeline, the four-way reversing valve 2 is respectively connected with the first heat exchanger 3 and the second heat exchanger 7 through pipelines, the inlet and the outlet of the photovoltaic power generation plate heat exchanger 404 are respectively connected with the first heat exchanger 3 and the second heat exchanger 7 through pipelines, heat exchange media are filled in the pipelines, and the heat exchange media are pentafluoropropane; the first heat exchanger 3 is disposed indoors, and the second heat exchanger 7 is disposed outdoors.
Underground circulating system includes constant temperature groundwater source 9, circulating pump 8, second heat exchanger 7 and pipeline, and circulating pump 8 passes through the pipeline and links to each other with constant temperature groundwater source 9, and second heat exchanger 7 passes through the pipeline and links to each other with circulating pump 8, and second heat exchanger 7 passes through the pipeline with constant temperature groundwater source 9 and links to each other.
And an electromagnetic valve 6 and a flow control meter 5 are arranged on a pipeline between the second heat exchanger 7 and the photovoltaic power generation plate 4.
The photovoltaic power generation plate heat exchanger 404 comprises a water inlet main pipe 405 and heat exchanger coils 406 arranged on two sides of the water inlet main pipe 405, one end of each heat exchanger coil 406 is communicated with the water inlet main pipe 405, and the other end of each heat exchanger coil 406 is provided with a water outlet.
And determining the required filling amount of the pentafluoropropane (R245ca) working medium according to the number of the required solar photovoltaic systems (photovoltaic power generation plates), the number of the indoor heat exchangers (first heat exchangers) and the length of the pipeline, and installing the heat exchangers according to the mode shown in the figure. The cycle can be divided into two cycle modes, namely a refrigeration cycle and a heat pump cycle.
The working path of the refrigeration cycle is that a working medium is compressed in the scroll compressor 1 to discharge high-temperature and high-pressure gas, the working medium flows in a direction of d inlet and b outlet through the four-way reversing valve 2 and flows into the second heat exchanger 7, and the second heat exchanger 7 at the moment is a condenser. The circulation pump 8 pumps the source of ground constant temperature water 9 into the second heat exchanger 7, taking away the heat it releases. The liquid working medium flowing out of the second heat exchanger 7 is throttled and depressurized by the electromagnetic valve 6 to become low-temperature and low-pressure liquid. And then the working medium enters the photovoltaic power generation plate 4 through the flow control meter 5 to cool the photovoltaic power generation plate, the flowing working medium enters the indoor first heat exchanger 3 again to cool the indoor temperature, and the first heat exchanger 3 at the moment is an evaporator. The working medium flows out of the first heat exchanger 3, passes through the four-way reversing valve 2, flows into the inlet a and flows out of the outlet c, and the low-temperature and low-pressure working medium enters the scroll compressor 1 to complete the whole refrigeration cycle.
In a refrigeration cycle system, a low-temperature working medium at about 15 ℃ is throttled, depressurized and flowed out by an electromagnetic valve 6, enters a header pipe, is introduced into a photovoltaic power generation plate array, is shunted before each plate is introduced, and enters a secondary pipeline, and the secondary pipeline sends the working medium to a photovoltaic plate heat exchanger behind each photovoltaic power generation plate 4 in the array. Photovoltaic power generation board 4 is in high temperature state can influence its generating efficiency, and after low temperature working medium got into every photovoltaic power generation board heat exchanger, utilize difference in temperature between photovoltaic power generation board heat exchanger and photovoltaic power generation board 4, the heat of photovoltaic power generation board heat exchanger is taken away through self phase transition to the working medium, reduces the temperature of photovoltaic power generation board to promote its generating efficiency's purpose.
In an indoor heat exchange system, working medium with the temperature of about 25 ℃ enters the indoor first heat exchanger 3 through a flow channel on the wall. At the moment, the indoor temperature can be further reduced through phase-change heat exchange, so that the evaporation and heat absorption effects of the refrigerant are optimal, the cooling pressure of the indoor traditional air conditioner is reduced, and the effect of saving electric energy is achieved.
The working path of the heat pump cycle is that a working medium flows into the four-way reversing valve 2 through the scroll compressor 1, c enters, a exits, and flows into the indoor first heat exchanger 3, at the moment, the first heat exchanger 3 is a condenser, the flowing working medium flows into the second heat exchanger 7 through the photovoltaic power generation plate 4 and the flow control meter 5, and flows into the second heat exchanger 7 after throttling and pressure reduction through the electromagnetic valve 6, and the second heat exchanger 7 at the moment is an evaporator. Similarly, the circulating pump 8 sends the underground constant temperature water source 9 into the second heat exchanger 7 to exchange heat, and the circulation of the underground water source pump is completed. After absorbing heat and changing phase through the first heat exchanger 7, the working medium enters the four-way reversing valve 2, enters the four-way reversing valve b and exits the four-way reversing valve b, and then flows into the scroll compressor 1, so that the whole heat pump cycle is completed.
In a refrigerant R245ca circulating system, after flowing through a photovoltaic power generation panel heat exchanger structure 404 on the back of a photovoltaic power generation panel, the inlet temperature (15 ℃ is actually calculated), corresponding boundary conditions and physical parameters are given, simulation calculation is performed through Comsol Multiphysics software, and the result shows that the length of a phase change section is 1633mm, the temperature change of a working medium is shown in figure 5, which shows that the working medium R245ca has phase change after 1.2m, the latent heat of vaporization is large, a large amount of heat can be taken away, and the cooling requirement is met. If the phase change does not occur, the temperature of the photovoltaic panel cannot meet the requirement, the power generation efficiency is influenced, and in addition, the indoor temperature cannot be reduced.
The utility model discloses on arranging of pipeline, carry out the numerical calculation analysis of model through the heat transfer link to the heat exchanger, adopt suitable pipeline mode of arranging, reach best heat transfer effect and minimum resistance loss to improve the circulation efficiency and the energy utilization of working medium.
Claims (6)
1. A pentafluoropropane photovoltaic and photothermal integrated heat pump circulating system is characterized by comprising an overground circulating system and an underground circulating system, the overground circulating system comprises a scroll compressor (1), a four-way reversing valve (2), a first heat exchanger (3), a second heat exchanger (7), a photovoltaic power generation plate (4) and pipelines, the back of the photovoltaic power generation plate (4) is provided with a photovoltaic power generation plate heat exchanger (404) in a laminating way, the scroll compressor (1) is connected with the four-way reversing valve (2) through a pipeline, the four-way reversing valve (2) is respectively connected with the first heat exchanger (3) and the second heat exchanger (7) through pipelines, the inlet and outlet of the photovoltaic power generation plate heat exchanger (404) are respectively connected with the first heat exchanger (3) and the second heat exchanger (7) through pipelines, heat exchange media are filled in the pipelines, and the heat exchange media are pentafluoropropane.
2. The pentafluoropropane photovoltaic and photothermal integrated heat pump circulation system according to claim 1, wherein the underground circulation system comprises a constant-temperature underground water source (9), a circulation pump (8), a second heat exchanger (7) and a pipeline, the circulation pump (8) is connected with the constant-temperature underground water source (9) through the pipeline, the second heat exchanger (7) is connected with the circulation pump (8) through the pipeline, and the second heat exchanger (7) is connected with the constant-temperature underground water source (9) through the pipeline.
3. The pentafluoropropane photovoltaic and photothermal integrated heat pump circulation system according to claim 1, wherein a solenoid valve (6) and a flow rate controller (5) are arranged on a pipeline between the second heat exchanger (7) and the photovoltaic power generation panel (4).
4. The pentafluoropropane photovoltaic and photothermal integrated heat pump circulation system according to claim 1, wherein the photovoltaic power generation plate heat exchanger (404) comprises a main water inlet pipe (405) and heat exchanger coils (406) arranged on two sides of the main water inlet pipe (405), one end of each heat exchanger coil (406) is respectively communicated with the main water inlet pipe (405), and the other end of each heat exchanger coil (406) is respectively provided with a water outlet.
5. The pentafluoropropane photovoltaic and photothermal integrated heat pump circulation system according to claim 1, wherein the first heat exchanger (3) is disposed indoors, and the second heat exchanger (7) is disposed outdoors.
6. The pentafluoropropane photovoltaic and photothermal integrated heat pump circulation system according to claim 1, wherein the photovoltaic power generation panel (4) comprises a photovoltaic cell module (403), a radiation paint layer (402) and a glass cover plate (401) which are arranged in sequence.
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| CN201920783553.7U CN209978258U (en) | 2019-05-28 | 2019-05-28 | Pentafluoropropane photovoltaic and photo-thermal integrated heat pump circulation system |
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| CN201920783553.7U CN209978258U (en) | 2019-05-28 | 2019-05-28 | Pentafluoropropane photovoltaic and photo-thermal integrated heat pump circulation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094815A (en) * | 2019-05-28 | 2019-08-06 | 浙江工业大学 | A kind of pentafluoropropane photovoltaic and photothermal integral heat pump circulating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094815A (en) * | 2019-05-28 | 2019-08-06 | 浙江工业大学 | A kind of pentafluoropropane photovoltaic and photothermal integral heat pump circulating system |
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