CN213901222U - Photovoltaic and photo-thermal integrated and solar energy composite heat pump heating system - Google Patents
Photovoltaic and photo-thermal integrated and solar energy composite heat pump heating system Download PDFInfo
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- CN213901222U CN213901222U CN202022608254.5U CN202022608254U CN213901222U CN 213901222 U CN213901222 U CN 213901222U CN 202022608254 U CN202022608254 U CN 202022608254U CN 213901222 U CN213901222 U CN 213901222U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 134
- 238000005338 heat storage Methods 0.000 claims abstract description 29
- 230000008859 change Effects 0.000 claims description 19
- 230000010354 integration Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims 2
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000010257 thawing Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000003570 air Substances 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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Abstract
实用新型涉及一种光伏光热一体化与太阳能复合热泵供暖系统，该系统包括光伏光热一体化装置、太阳能集热蓄热装置和热泵系统。所述光伏光热一体化装置包括光伏光热板、电磁阀、变频水泵、光伏组件、压缩机接线口等，所述太阳能集热蓄热装置包括太阳能集热器、相变蓄热装置、变频水泵、电磁阀等，所述热泵系统包括压缩机、四通换向阀、单向阀、电磁阀、电子膨胀阀、水源蒸发器、直膨式蒸发器等，以上最终与换热水箱换热通过第四变频水泵与末端循环。该系统结合PVT与热泵的优势，既产电产热又避免了空气源热泵在严寒或低温天气频繁化霜导致的机组能效降低，保障了末端采暖需求且节能环保。
The utility model relates to a photovoltaic photothermal integrated and solar energy composite heat pump heating system, which comprises a photovoltaic photothermal integrated device, a solar heat collection and heat storage device and a heat pump system. The photovoltaic-photothermal integrated device includes photovoltaic photovoltaic panels, solenoid valves, variable-frequency water pumps, photovoltaic components, compressor wiring ports, etc. Water pumps, solenoid valves, etc. The heat pump system includes compressors, four-way reversing valves, check valves, solenoid valves, electronic expansion valves, water source evaporators, direct expansion evaporators, etc., which ultimately exchange heat with the hot water tank. Through the fourth variable frequency water pump and the end circulation. The system combines the advantages of PVT and heat pump, which not only produces electricity and heat, but also avoids the reduction of energy efficiency of the unit caused by frequent defrosting of air source heat pump in severe cold or low temperature weather, ensuring the terminal heating demand and saving energy and environmental protection.
Description
The technical field is as follows:
the utility model belongs to heat pump and solar energy utilization field, concretely relates to photovoltaic light and heat integration and compound heat pump heating system of solar energy.
Background art:
in recent years, with the continuous development and use of non-renewable resources worldwide, the trend of energy shortage is inevitable, the problem of non-renewable energy consumption is increasingly severe, and various countries seek the development and utilization of renewable energy and effectively available sustainable energy such as solar energy, wind energy and the like. In China, coal resource consumption still occupies the first place, and pollution caused by coal-fired heating has to be paid attention to. With the promotion of the policy of changing coal into electricity in the northern heating season, substitutes such as a heat pump and a gas wall-mounted boiler for heating are promoted.
However, the water source heat pump is a heat boosting device which takes water as a low-grade heat source and converts low-grade heat energy in the water into high-grade heat energy by driving a small amount of high-grade electric energy. Compared with a popular air source heat pump under the northern coal-to-electricity policy, the air source heat pump is easy to frost at a lower environmental temperature, and if the air source heat pump is not well treated, the system works abnormally, so that the heating effect is influenced. The heat is increased by acting to exchange heat with the refrigerant at a certain water temperature higher than the ambient air temperature, so that the problem of frosting of the heat pump is avoided. The direct-expansion solar heat pump directly absorbs solar heat in the evaporator by utilizing the refrigerant to evaporate, so that the direct-expansion solar heat pump has higher thermal performance, the refrigerant serving as a solar energy absorption working medium can prevent the solar heat collector from freezing compared with water serving as an absorption working medium, heat exchange equipment is reduced, and the structure is more compact. On one hand, the solar photovoltaic and photo-thermal integration technology utilizes a photovoltaic module to generate electricity for electric equipment; on the other hand, the heat on the back of the photovoltaic module is recovered, so that the photovoltaic module can generate electricity and supply heat, and has the defect that the photovoltaic module is easily influenced by local climatic conditions in energy conversion and utilization, so that the photovoltaic module is more suitable for areas with high solar radiation sunshine amount. The solar hot water collector can also fully utilize solar energy to prepare hot water as an independent system or be combined with other systems for heating and the like to exert performance advantages of the solar hot water collector.
In view of energy utilization and clean heating, a need exists for an efficient and energy-saving heating system according to the needs of the region, which can overcome the problem of low performance in actual operation even at low ambient temperature.
Analysis more than combining, the utility model discloses from the thinking that heat pump system and solar thermal energy utilization combine, provide a photovoltaic light and heat integration and solar energy composite heat pump heating system, especially solve the heating problem in alpine region.
The utility model has the following contents:
the utility model discloses a solve not enough among the prior art scheme, ensure clean heating effect, provide a photovoltaic light and heat integration and solar energy composite heat pump heating system. The following technical scheme is provided:
the utility model relates to a photovoltaic and photo-thermal integrated and solar energy composite heat pump heating system, which is characterized by comprising a PVT photovoltaic and photo-thermal integrated device, a solar heat collection and storage device and a heat pump system; wherein:
the heat pump system comprises a water source heat pump and a direct expansion type heat pump, wherein the water source heat pump comprises a first compressor, an outlet of the first compressor is connected with an inlet of a condensing coil of the water source heat pump of the heat exchange water tank through a first electromagnetic valve, and an outlet of the condensing coil of the water source heat pump and a first electronic expansion valve enter a water source evaporator and return to the first compressor; the outlet of the condenser of the direct expansion type heat pump and a second electronic expansion valve enter the direct expansion type evaporator and return to the first compressor.
The PVT photovoltaic and photo-thermal integrated device comprises a PVT photovoltaic and photo-thermal plate photovoltaic side outlet connected with a photovoltaic module inlet, and a photovoltaic module outlet connected with a first compressor wiring port and a second compressor wiring port; PVT photovoltaic light and heat board light and heat side export divide into two the tunnel, wherein all the way through fourth solenoid valve and heat exchange water tank PVT photovoltaic light and heat water side entry linkage, heat exchange water tank PVT photovoltaic light and heat water side export and second variable frequency water pump entry linkage, another way through third solenoid valve and water source evaporimeter entry linkage, water source evaporimeter export and first variable frequency water pump connection, first variable frequency water pump export and second variable frequency water pump export and PVT photovoltaic light and heat board entry linkage.
The solar heat collection and storage device comprises a solar heat collector connected with an inlet of the phase change heat storage device in the daytime, and an outlet of the phase change heat storage device is connected with an inlet of the solar heat collector through a third variable frequency water pump; the solar heat collector is connected with a water side inlet of the phase change heat storage device through a fifth electromagnetic valve and enters the heat exchange water tank at night, and the heat exchange water tank is connected with the phase change heat storage device through a water side outlet of the phase change heat storage device.
Further, the first compressor and the second compressor are power devices of two independent-cycle heat pump systems.
The improved water heater is further improved in that a temperature sensor for detecting temperature is arranged in the heat exchange water tank, the output end of the temperature sensor is connected to the controller, and the controller is respectively connected with the control end of the third electromagnetic valve, the control end of the fourth electromagnetic valve, the control end of the first variable-frequency water pump and the control end of the second variable-frequency water pump and used for controlling the switch of the third electromagnetic valve and the fourth electromagnetic valve and adjusting the first variable-frequency water pump and the second variable-frequency water pump.
The further improvement lies in that a temperature sensor for detecting temperature is arranged in the phase change heat storage device, the output end of the temperature sensor is connected to the controller, and the controller is respectively connected with the control end of the third variable frequency water pump and the control end of the fifth electromagnetic valve and used for controlling the on-off of the fifth electromagnetic valve and adjusting the third variable frequency water pump.
The further improvement is that the photovoltaic module comprises a combiner box, an inverter, a controller, a storage battery and a converter; the electric energy generated by the solar cell module is stored in the storage battery through the header box, the controller and the converter in sequence, and is converted into alternating current through the inverter to be used by the first compressor and the second compressor.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses a heating is utilized in many heat source couplings, to the make full use of renewable energy solar energy, makes the more high-efficient environmental protection of system.
2. The utility model discloses an integration and complementary to each single heat source system have compensatied the disadvantage department of self system, have promoted the performance of whole system. The solar heat collector, the water source heat pump, the direct expansion heat pump and the PVT photovoltaic photo-thermal integration are integrated to play respective roles.
3. The utility model discloses when solar radiation illuminance is stronger, utilize PVT photovoltaic light and heat board electricity generation and provide hot water, the high-efficient work of formula heat pump of directly expanding, solar energy collection pipe thermal-arrest provides hot water and stores the heat in phase change heat storage device, has promoted solar energy utilization ratio.
4. The utility model discloses when solar radiation illuminance is lower, utilize PVT photovoltaic light and heat board to provide low temperature hot water, get into water source heat pump evaporation side heat exchanger heat absorption, rethread condensation survey heat exchanger will use the water temperature to promote to required temperature.
5. The utility model discloses at the period of night, only the heat that phase change heat storage device will store is released and is used for end user with the heat exchange water tank heat transfer altogether.
To sum up, the utility model discloses a photovoltaic light and heat integration and compound heat pump heating system of solar energy combines PVT photovoltaic light and heat integration and solar collector and heat pump set organic together, realizes the operational mode of multiple difference, has guaranteed terminal heating system's stability, has improved the efficiency when the system jointly supplies heat, effectively solves the difficult problem of extremely cold environment in the north, extremely cold area heating.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, and together with the description serve to explain the invention, with the following detailed description:
fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the system heating mode when the solar radiation illuminance is strong in the daytime;
FIG. 3 is a schematic diagram of the system heating mode when the solar irradiance is low during the day;
FIG. 4 is a working schematic diagram of the heating mode of the system in the night period of the utility model;
description of the symbols of the drawings: 1 is a first compressor, 2 is a first one-way valve, 3 is a first four-way reversing valve, 4 is a first electromagnetic valve, 5 is a heat exchange water tank, 6 is a first electronic expansion valve, 7 is a water source evaporator, 8 is a second compressor, 9 is a second one-way valve, 10 is a second four-way reversing valve, 11 is a second electromagnetic valve, 12 is a second electronic expansion valve, 13 is a direct expansion type evaporator, 14 is a PVT photovoltaic hot plate, 15 is a third electromagnetic valve, 16 is a first variable frequency water pump, 17 is a fourth electromagnetic valve, 18 is a second variable frequency water pump, 19 is a solar thermal collector, 20 is a phase change heat storage device, 21 is a third variable frequency water pump, 22 is a fifth electromagnetic valve, 23 is a photovoltaic component, 24 is a fourth variable frequency water pump, a is a first compressor wiring port, B is a second compressor wiring port, A is a phase change heat storage device water side inlet, B is a phase change heat storage device water side outlet, C is a PVT photovoltaic hot water side inlet, a heat storage device is a heat storage device heat, D is PVT photovoltaic light and heat water side export, E is water source heat pump condenser coil export, F directly expands formula heat pump condenser coil export, G is water source heat pump condenser coil entry, H directly expands formula heat pump condenser coil entry.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings, which are provided for illustration and explanation, but not for limitation.
The utility model relates to a photovoltaic and photo-thermal integrated and solar energy composite heat pump heating system, which is characterized by comprising a PVT photovoltaic and photo-thermal integrated device, a solar heat collection and storage device and a heat pump system; wherein:
the heat pump system comprises a water source heat pump and a direct expansion type heat pump, wherein the water source heat pump comprises a first compressor (1), an outlet of the first compressor (1) is connected with a heat exchange water tank (5) through a first electromagnetic valve (4) and a water source heat pump condensing coil inlet (G), the water source heat pump condensing coil outlet (G) and a first electronic expansion valve (6) enter a water source evaporator (7) and return to the first compressor (1); the direct expansion type heat pump comprises a second compressor (8), wherein the outlet of the second compressor (8) is connected with the inlet (H) of a direct expansion type heat pump condenser of a heat exchange water tank (5) through a second electromagnetic valve (11), and the outlet (F) of the direct expansion type heat pump condenser and a second electronic expansion valve (12) enter a direct expansion type evaporator (13) and return to the first compressor (8).
The PVT photovoltaic and photothermal integrated device comprises a PVT photovoltaic and photothermal plate (14), wherein a photovoltaic side outlet of the PVT photovoltaic and photothermal plate is connected with an inlet of a photovoltaic module (23), and an outlet of the photovoltaic module (23) is connected with a first compressor wiring port (a) and a second compressor wiring port (b); the outlet of the photo-thermal side of the PVT photovoltaic photo-thermal plate (14) is divided into two paths, wherein one path is connected with the inlet (C) of the PVT photovoltaic photo-thermal water side of the heat exchange water tank (5) through a fourth electromagnetic valve (17), the outlet (D) of the PVT photovoltaic photo-thermal water side of the heat exchange water tank (5) is connected with the inlet of a second variable-frequency water pump (18), the other path is connected with the inlet of a water source evaporator (7) through a third electromagnetic valve (15), the outlet of the water source evaporator (7) is connected with a first variable-frequency water pump (16), and the outlet of the first variable-frequency water pump (16) and the outlet of the second variable-frequency water pump (18) are connected with the inlet of the PVT photovoltaic photo-thermal plate (14).
The solar heat collection and storage device comprises a solar heat collector (19) connected with an inlet of a phase change heat storage device (20) in the daytime, and an outlet of the phase change heat storage device (20) is connected with an inlet of the solar heat collector (19) through a third variable frequency water pump (21); the solar heat collector (19) is connected with a water side inlet (A) of the phase change heat storage device through a fifth electromagnetic valve (22) to enter the heat exchange water tank (5), and the heat exchange water tank (5) is connected with the phase change heat storage device (20) through a water side outlet (B) of the phase change heat storage device.
The utility model discloses well first compressor (1) and second compressor (8) are two independent circulating heat pump system's power device.
The utility model discloses be provided with the temperature sensor that the temperature detected in well hot water exchange tank (5), temperature sensor's output connects to the controller, the control end of third solenoid valve (15), the control end of fourth solenoid valve (17), the control end of first frequency conversion water pump (16), the control end of second frequency conversion water pump (18) are connected respectively to the controller for control third solenoid valve (15), fourth solenoid valve (17) switch and adjust first frequency conversion water pump (16), second frequency conversion water pump (18).
The utility model discloses be provided with the temperature sensor that the temperature detected in well phase transition heat accumulation device (20), temperature sensor's output connects to the controller, and the control end of third frequency conversion water pump (21) and the control end of fifth solenoid valve (22) are connected respectively to the controller for the switch of control fifth solenoid valve (22) and regulation third frequency conversion water pump (21).
The utility model discloses a photovoltaic module (23) comprises a combiner box, an inverter, a controller, a storage battery and a converter; electric energy generated by the solar cell module is stored in the storage battery through the header box, the controller and the converter in sequence, and is converted into alternating current through the inverter to be used by the first compressor (1) and the second compressor (2).
Following do the utility model discloses the specific flow of system heat supply mode when solar radiation illuminance is stronger daytime, system heat supply mode when solar radiation illuminance is lower daytime and period system heat supply mode night.
The heating mode of the system when the solar radiation illumination is strong in daytime is shown in figure 2:
photovoltaic power generation mode: the electric energy generated by the PVT photovoltaic photo-thermal plate (14) is stored by a storage battery, converted into AC220V by an inverter and supplied to the first compressor (1) and the second compressor (8) for use. Photovoltaic heating mode: the third solenoid valve (15) is closed and the fourth solenoid valve (17) is opened. The return water enters the PVT photovoltaic solar hot plate (14) through the second variable frequency water pump (18), and after being heated, the water flows into the heat exchange water tank (5) through the fourth electromagnetic valve (17), so that circulation is completed. The working mode of the direct expansion heat pump is as follows: the refrigerant is compressed into high-temperature and high-pressure gas by a second compressor (8), exchanges heat with water by a condenser in a heat exchange water tank (5), is throttled and depressurized by a second electronic expansion valve (12) after being cooled, is evaporated and absorbs heat in a direct expansion evaporator (13), and finally returns to the second compressor (8). The heat collection mode of the solar heat collector is as follows: hot water heated by the solar heat collector system (19) enters the phase change heat storage device (20) and then returns to the solar heat collector (19) through the third variable frequency water pump (21).
The heating mode of the system when the solar radiation illumination is low in daytime is shown in fig. 3:
the working mode of the water source heat pump is as follows: the refrigerant is compressed into high-temperature and high-pressure gas by the first compressor (1), exchanges heat with water by the condenser in the heat exchange water tank (5), is throttled and depressurized by the first electronic expansion valve (6) after being cooled, is evaporated and absorbs heat in the water source evaporator (7), and finally returns to the first compressor (1). Wherein, the low-temperature hot water at the evaporation end of the water source exchanges heat with the refrigerant for the water temperature below about 30 ℃ generated by the PVT photovoltaic light heat plate (14) when the solar radiation illumination is lower, and the working mode of the direct expansion heat pump and the heat collection mode of the solar heat collector are explained in the same way.
Night time system heating mode see fig. 4:
the heat pump system does not work, the first electromagnetic valve (4), the second electromagnetic valve (11) and the fourth electromagnetic valve (17) are closed, and the fifth electromagnetic valve (22) is opened. The heat accumulated by the phase-change heat storage device (20) in the daytime exchanges heat with the heat exchange water tank (5) and then supplies heat to the end user.
The above is the preferred embodiment of the present invention, although the present invention has been described in detail, the above-mentioned embodiments are only one of the specific embodiments of the present invention, and the general changes and replacements made by the technical solutions of the present invention should be included in the protection scope of the present invention.
Claims (5)
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| CN113686048A (en) * | 2021-09-15 | 2021-11-23 | 浙江浙能技术研究院有限公司 | Direct-expansion PVT heat pump system suitable for city and operation method thereof |
| CN114216152A (en) * | 2021-11-16 | 2022-03-22 | 国网青海省电力公司果洛供电公司 | Remote area energy supply system |
| CN114440474A (en) * | 2022-04-11 | 2022-05-06 | 浙江浙能技术研究院有限公司 | Combined cooling, heating and power system based on PVT (polyvinyl dichloride) component and operation method |
| CN115183497A (en) * | 2022-07-07 | 2022-10-14 | 中国华电科工集团有限公司 | Cooling, heating and power supply system and cooling, heating and power supply method |
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| CN116642275A (en) * | 2023-06-16 | 2023-08-25 | 常熟亨通新能源产业研究院有限公司 | A dual-source solar heat pump structure and heating system coupled with collector and PVT |
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| CN114440474A (en) * | 2022-04-11 | 2022-05-06 | 浙江浙能技术研究院有限公司 | Combined cooling, heating and power system based on PVT (polyvinyl dichloride) component and operation method |
| CN114440474B (en) * | 2022-04-11 | 2022-06-28 | 浙江浙能技术研究院有限公司 | Combined cooling, heating and power system based on PVT assembly and operation method |
| CN115183497A (en) * | 2022-07-07 | 2022-10-14 | 中国华电科工集团有限公司 | Cooling, heating and power supply system and cooling, heating and power supply method |
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