Photovoltaic photo-thermal double-source heat pump heating system
The photovoltaic-thermal dual-source heat pump heating system solves the problems of instability in photovoltaic-thermal systems and performance degradation in air-source heat pumps, achieving a highly efficient energy utilization and environmentally friendly integrated power and heating solution.
Patent Information
- Application Number
- CN202423149680.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing photovoltaic and solar thermal systems are unstable due to climate change and day-night cycles, resulting in decreased photoelectric conversion efficiency. Air source heat pumps also experience performance degradation at low ambient temperatures, leading to low energy efficiency and severe environmental pollution.
A photovoltaic-thermal dual-source heat pump heating system is constructed, which combines photovoltaic thermal panels, a heated water tank, a heat source-side heat exchanger, an air conditioning heating heat exchanger, and an evaporator. Heat transfer is controlled through circulation pipelines and reversing valves. The system utilizes solar energy to generate electricity and combines it with air conditioning heating functions to improve the utilization rate of solar energy.
It has achieved stable power and heat supply under different environmental conditions, reduced dependence on traditional mains power, improved the power generation efficiency and air conditioning heating capacity of photovoltaic thermal systems, and reduced environmental pollution.
Smart Images
Figure CN223741029U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of new energy technology, and more specifically, to a photovoltaic and solar thermal dual-source heat pump heating system. Background Technology
[0002] Currently, buildings require significant amounts of energy for heating, air conditioning, lighting, and electricity use, with cooling and heating consuming the largest share. As global emphasis on environmental protection and sustainable development grows, the application of renewable energy in the building sector will become increasingly widespread. Global environmental issues have made reducing buildings' energy demands a crucial topic. By adopting energy-saving technologies, promoting sustainable building materials, and developing renewable energy, we can reduce building energy consumption and environmental impact, thus promoting sustainable energy development.
[0003] Currently, the application of solar low-temperature hot water systems and solar photovoltaic power generation systems has developed rapidly. In some regions, the economic benefits and energy-saving effects of domestic solar hot water systems have already become apparent. While stand-alone and grid-connected photovoltaic power generation systems are technically relatively mature...
[0004] However, current photovoltaic and solar thermal systems are susceptible to instability due to climate change and day-night cycles, which can affect daily life. Furthermore, high temperatures in photovoltaic and solar thermal systems can lead to a decrease in photoelectric conversion efficiency. On the other hand, air source heat pumps also suffer from performance degradation due to a drop in ambient temperature. Utility Model Content
[0005] This invention addresses the aforementioned deficiencies in the prior art by providing a photovoltaic-thermal dual-source heat pump heating system.
[0006] The technical solution adopted by this utility model to solve its technical problem is: to construct a photovoltaic and solar thermal dual-source heat pump heating system, the heating system including a photovoltaic solar thermal plate, a heating water tank connected to the photovoltaic solar thermal plate through a first circulation pipeline, a heat source side heat exchanger connected to the heating water tank through a second circulation pipeline, an air conditioning heating heat exchanger connected to the heat source side heat exchanger through a third circulation pipeline, and an evaporator connected to the air conditioning heating heat exchanger through a fourth circulation pipeline;
[0007] The third and fourth circulation pipelines are connected by a four-way reversing valve. The third and fourth circulation pipelines are equipped with a refrigerant receiver, a gas-liquid separator connected to the refrigerant receiver, a compressor connected to the gas-liquid separator, and a hot water shell-and-tube heat exchanger connected to the compressor.
[0008] In the photovoltaic-thermal dual-source heat pump heating system of this utility model, the photovoltaic thermal panel and the heating water tank are circulatedly connected through a first inlet pipe and a first outlet pipe. The first inlet pipe is used to transport water in the photovoltaic thermal panel to the heating water tank, and the first outlet pipe is used to transport water in the heating water tank to the photovoltaic thermal panel. A first circulating water pump is provided on the first inlet pipe or the first outlet pipe to promote water circulation between the photovoltaic thermal panel and the heating water tank.
[0009] In the photovoltaic-thermal dual-source heat pump heating system of this utility model, the heating water tank and the heat source side heat exchanger are circulatedly connected through a second inlet pipe and a second outlet pipe. The second inlet pipe is used to transport water in the heating water tank to the heat source side heat exchanger, and the second outlet pipe is used to transport water in the heat source side heat exchanger to the heating water tank. A second circulating water pump is provided on the second inlet pipe or the second outlet pipe to promote water circulation between the heating water tank and the heat source side heat exchanger.
[0010] In the photovoltaic-thermal dual-source heat pump heating system described in this utility model, the hot water shell-and-tube heat exchanger is connected to the air conditioning heating heat exchanger, the heat source side heat exchanger, and the gas-liquid separator respectively through a four-way reversing valve.
[0011] In the photovoltaic-thermal dual-source heat pump heating system of this utility model, a first solenoid valve is provided on the third circulation pipeline to control the flow or disconnection of the third circulation pipeline.
[0012] In the photovoltaic-thermal dual-source heat pump heating system of this utility model, a second solenoid valve is provided on the fourth circulation pipeline to control the flow or disconnection of the fourth circulation pipeline.
[0013] In the photovoltaic-thermal dual-source heat pump heating system of this utility model, the heating system further includes a temperature sensor installed in the heating water tank and a controller electrically connected to the temperature sensor. The controller is used to control the opening or closing of the first solenoid valve and the second solenoid valve.
[0014] In the photovoltaic-thermal dual-source heat pump heating system of this utility model, the third circulation pipeline and the fourth circulation pipeline both include a common pipeline. The gas-liquid separator, the compressor and the hot water shell-and-tube heat exchanger are connected sequentially through the common pipeline, which is connected to the third circulation pipeline and the fourth circulation pipeline respectively.
[0015] In the photovoltaic-thermal dual-source heat pump heating system described in this utility model, the hot water shell-and-tube heat exchanger further includes a hot water inlet and a hot water outlet, and the air conditioning heating heat exchanger further includes a heating hot water outlet and a heating hot water inlet.
[0016] In the photovoltaic-thermal dual-source heat pump heating system of this utility model, the air conditioning heating heat exchanger is an air conditioning heating plate heat exchanger, and the heat source side heat exchanger is a heat source side plate heat exchanger.
[0017] The photovoltaic-thermal dual-source heat pump heating system of this utility model has the following beneficial effects: When using this photovoltaic-thermal dual-source heat pump heating system, by setting up photovoltaic thermal panels and utilizing solar energy to generate electricity, the electricity generated by the photovoltaic thermal panels can be used to power the system or the daily needs of users, reducing the system's reliance on traditional grid electricity and reducing the coal combustion required for thermal power generation, thus significantly reducing environmental pollution. The heat generated during the photovoltaic thermal panel power generation process is collected in a heating water tank through the first circulation pipeline, and simultaneously, water circulation dissipates heat from the photovoltaic thermal panel power generation, improving power generation efficiency. Furthermore, the heat in the heating water tank is transferred to the air conditioning heating heat exchanger through the third circulation pipeline, meeting the user's needs for hot water and increased indoor temperature. It can utilize solar energy for power generation while using excess solar energy for residential hot water or air conditioning heating, improving the utilization rate of solar energy. At night or when the photovoltaic thermal panel temperature is low, heat can also be transferred to the air conditioning heating heat exchanger through the evaporator and the fourth circulation pipeline, also meeting the user's needs for hot water. The heating system described in this application combines multiple energy-saving technologies, integrating power generation, hot water production, and air conditioning heating functions into a single unit, thereby improving equipment utilization. Simultaneously, it can supply heat to air conditioning heating heat exchangers and other components under various conditions, meeting user needs. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:
[0019] Figure 1 This is a schematic diagram of the structure of the photovoltaic and solar thermal dual-source heat pump heating system of this utility model. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0021] like Figure 1 As shown, in the first embodiment of the photovoltaic-thermal dual-source heat pump heating system of this utility model, the heating system 10 includes a photovoltaic thermal plate 11, a heating water tank 12 connected to the photovoltaic thermal plate 11 through a first circulation pipe 13, a heat source side heat exchanger 14 connected to the heating water tank 12 through a second circulation pipe 15, an air conditioning heating heat exchanger 16 connected to the heat source side heat exchanger 14 through a third circulation pipe 17, and an evaporator 18 connected to the air conditioning heating heat exchanger 16 through a fourth circulation pipe 19.
[0022] The third circulation pipeline 17 and the fourth circulation pipeline 19 are connected by a four-way reversing valve 20. The third circulation pipeline 17 and the fourth circulation pipeline 19 are equipped with a refrigerant receiver 21, a gas-liquid separator 22 connected to the refrigerant receiver 21, a compressor 23 connected to the gas-liquid separator 22, and a hot water shell-and-tube heat exchanger 24 connected to the compressor 23.
[0023] Preferably, the heating water tank 12 is an insulated water tank that can maintain the water temperature.
[0024] When using the photovoltaic-thermal dual-source heat pump heating system of this utility model, by setting up photovoltaic thermal panels 11 to generate electricity using solar energy, the electricity generated by the photovoltaic thermal panels 11 can be used to power the system or the daily needs of users, reducing the system's use of traditional grid electricity and reducing the coal combustion required for thermal power generation, which can significantly reduce environmental pollution. The heat generated during the power generation process of the photovoltaic thermal panels 11 is collected in the heating water tank 12 through the first circulation pipe 13, and simultaneously, water circulation helps to dissipate heat from the photovoltaic thermal panels 11, improving power generation efficiency. Furthermore, the heat in the heating water tank 12 is transferred to the air conditioning heating heat exchanger 16 through the third circulation pipe 17, meeting the user's needs for hot water and increasing indoor temperature. It can utilize solar energy for power generation while using excess solar energy for residential hot water or air conditioning heating, improving the utilization rate of solar energy. At night or when the temperature of the photovoltaic thermal panels 11 is low, heat can also be transferred to the air conditioning heating heat exchanger 16 through the evaporator 18 and the fourth circulation pipe 19, which can also meet the user's needs for hot water. The heating system 10 of this application combines multiple energy-saving technologies, integrating power generation, hot water production, and air conditioning heating functions into a single unit, thereby improving equipment utilization. Simultaneously, it can supply heat to the air conditioning heating heat exchanger 16 and other components under various conditions, meeting user needs.
[0025] Specifically, the photovoltaic thermal panel 11 and the heating water tank 12 are circulatedly connected through a first inlet pipe 25 and a first outlet pipe 26. The first inlet pipe 25 is used to transport water in the photovoltaic thermal panel 11 to the heating water tank 12, and the first outlet pipe 26 is used to transport water in the heating water tank 12 to the photovoltaic thermal panel 11. A first circulating water pump 27 is provided on the first inlet pipe 25 or the first outlet pipe 26 to promote water circulation between the photovoltaic thermal panel 11 and the heating water tank 12.
[0026] Furthermore, the heating water tank 12 and the heat source side heat exchanger 14 are circulatedly connected through a second inlet pipe 28 and a second outlet pipe 29. The second inlet pipe 28 is used to transport water in the heating water tank 12 to the heat source side heat exchanger 14, and the second outlet pipe 29 is used to transport water in the heat source side heat exchanger 14 to the heating water tank 12. A second circulating water pump 30 is provided on the second inlet pipe 28 or the second outlet pipe 29 to promote water circulation between the heating water tank 12 and the heat source side heat exchanger 14.
[0027] In this application, the hot water shell-and-tube heat exchanger 24 is connected to the air conditioning heating heat exchanger 16, the heat source side heat exchanger 14 and the gas-liquid separator 22 respectively through a four-way reversing valve 20.
[0028] Preferably, in order to improve the utilization rate of electronic components, the air conditioner heating heat exchanger 16, the heat source side heat exchanger 14, and the gas-liquid separator 22 are shared by the third circulation pipeline 17 and the fourth circulation pipeline 19.
[0029] Furthermore, the third circulation pipeline 17 is equipped with a first solenoid valve 31 that controls the flow or disconnection of the third circulation pipeline 17.
[0030] Similarly, the fourth circulation pipeline 19 is equipped with a second solenoid valve to control the flow or disconnection of the fourth circulation pipeline 19.
[0031] In this application, the heating system 10 also includes a temperature sensor disposed in the heating water tank 12 and a controller electrically connected to the temperature sensor, the controller being used to control the opening or closing of the first solenoid valve 31 and the second solenoid valve.
[0032] When the temperature sensor detects that the temperature inside the heating water tank 12 is higher than or equal to the preset temperature, it controls the first solenoid valve 31 to open and the second solenoid valve to close, using the hot water in the heating water tank 12 to heat the air conditioner. When the temperature sensor detects that the temperature inside the heating water tank 12 is lower than the preset temperature, it controls the second solenoid valve to open and the first solenoid valve 31 to close, using the evaporator 18 to heat the air conditioner.
[0033] Preferably, both the third circulation pipeline 17 and the fourth circulation pipeline 19 include a common pipeline 32, through which the gas-liquid separator 22, the compressor 23 and the hot water shell-and-tube heat exchanger 24 are connected in sequence. The common pipeline 32 is connected to the third circulation pipeline 17 and the fourth circulation pipeline 19 respectively.
[0034] Furthermore, the hot water shell-and-tube heat exchanger 24 also includes a hot water inlet 33 and a hot water outlet 34, and the air conditioning heating heat exchanger 16 also includes a heating hot water outlet 36 and a heating hot water inlet 35.
[0035] Preferably, the air conditioning heating heat exchanger 16 is an air conditioning heating plate heat exchanger, and the heat source side heat exchanger 14 is a heat source side plate heat exchanger.
[0036] Furthermore, in this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," "stacked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A photovoltaic photo-thermal dual-source heat pump heating system, characterized in that, The heating system comprises a photovoltaic-photothermal plate, a heating water tank in communication with the photovoltaic-photothermal plate through a first circulation pipeline, a heat source side heat exchanger in communication with the heating water tank through a second circulation pipeline, an air conditioning heating heat exchanger in communication with the heat source side heat exchanger through a third circulation pipeline, and an evaporator in communication with the air conditioning heating heat exchanger through a fourth circulation pipeline. The third circulation pipeline and the fourth circulation pipeline are communicated through a four-way reversing valve, and a refrigerant reservoir, a gas-liquid separator in communication with the refrigerant reservoir, a compressor in communication with the gas-liquid separator, and a hot water tube shell heat exchanger in communication with the compressor are arranged on the third circulation pipeline and the fourth circulation pipeline.
2. The photovoltaic and solar-thermal dual-source heat pump heating system according to claim 1, characterized in that, The photovoltaic-photothermal plate and the heating water tank are communicated through a first water inlet pipe and a first water outlet pipe, the first water inlet pipe is used for conveying water in the photovoltaic-photothermal plate to the heating water tank, the first water outlet pipe is used for conveying water in the heating water tank to the photovoltaic-photothermal plate, and a first circulating water pump for promoting water circulation between the photovoltaic-photothermal plate and the heating water tank is arranged on the first water inlet pipe or the first water outlet pipe.
3. The photovoltaic and solar-thermal dual-source heat pump heating system according to claim 2, characterized in that, The heating water tank and the heat source side heat exchanger are communicated through a second water inlet pipe and a second water outlet pipe, the second water inlet pipe is used for conveying water in the heating water tank to the heat source side heat exchanger, the second water outlet pipe is used for conveying water in the heat source side heat exchanger to the heating water tank, and a second circulating water pump for promoting water circulation between the heating water tank and the heat source side heat exchanger is arranged on the second water inlet pipe or the second water outlet pipe.
4. The photovoltaic and solar-thermal dual-source heat pump heating system according to claim 1, wherein, The hot water tube shell heat exchanger is communicated with the air conditioning heating heat exchanger, the heat source side heat exchanger and the gas-liquid separator through a four-way reversing valve.
5. The photovoltaic and solar-thermal dual source heat pump heating system according to claim 4, characterized in that, A first electromagnetic valve for controlling the flow or disconnection of the third circulation pipeline is arranged on the third circulation pipeline.
6. The photovoltaic and solar-thermal dual source heat pump heating system according to claim 5, characterized in that, A second electromagnetic valve for controlling the flow or disconnection of the fourth circulation pipeline is arranged on the fourth circulation pipeline.
7. The photovoltaic and solar-thermal dual source heat pump heating system according to claim 6, characterized in that, The heating system further comprises a temperature sensor arranged in the heating water tank and a controller electrically connected with the temperature sensor, the controller being used for controlling the opening or closing of the first electromagnetic valve and the second electromagnetic valve.
8. The photovoltaic and solar-thermal dual source heat pump heating system according to claim 6, wherein, The third circulation pipeline and the fourth circulation pipeline both comprise a common pipeline, the gas-liquid separator, the compressor and the hot water tube shell heat exchanger are communicated in sequence through the common pipeline, and the common pipeline is communicated with the third circulation pipeline and the fourth circulation pipeline respectively.
9. The photovoltaic and solar thermal dual source heat pump heating system according to claim 1, wherein, The hot water tube shell heat exchanger further comprises a hot water inlet and a hot water outlet, and the air conditioning heating heat exchanger further comprises a heating hot water outlet and a heating hot water inlet.
10. The photovoltaic and solar thermal dual source heat pump heating system according to claim 1, wherein, The air conditioning heating heat exchanger is an air conditioning heating plate heat exchanger, and the heat source side heat exchanger is a heat source side plate heat exchanger.