A PV / T coupled air source heat pump hot water system
By using a PV/T coupled air source heat pump water heating system, the problems of photovoltaic thermal systems being affected by climate change and day-night cycles have been solved, thereby improving system stability and energy efficiency, and reducing environmental pollution and dependence on traditional electricity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI HUIDAHENG ENERGY TECH CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-14
AI Technical Summary
Photovoltaic and solar thermal systems are greatly affected by climate change and day-night cycles, leading to unstable system operation. Traditional air source heat pumps are affected in low-temperature environments, necessitating improvements in the overall efficiency of solar energy utilization.
The system adopts a PV/T coupled air source heat pump hot water system, which combines photovoltaic thermal panels and air source heat pumps. Heat transfer and stability are enhanced through temperature sensors and heat exchangers. The air source heat pump is used to supplement heat, integrating photovoltaic power generation and hot water supply.
It improves system stability and overall energy utilization efficiency, reduces reliance on traditional grid electricity, reduces environmental pollution, and enhances photovoltaic power generation efficiency and hot water supply capacity.
Smart Images
Figure CN224498760U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air source heat pump technology, and in particular to a PV / T coupled air source heat pump hot water system. Background Technology
[0002] Currently, the construction industry accounts for a significant proportion of global energy consumption, particularly in heating, hot water supply, cooling, and electrical appliance use. These demands not only lead to enormous energy consumption but also contribute a substantial share of carbon emissions. With increasing global emphasis on sustainable development, the construction industry possesses immense potential for energy conservation and emission reduction, making it a key area for achieving global sustainable development goals. Therefore, exploring and adopting energy-saving technologies, as well as developing renewable energy sources such as solar power, are of great significance for reducing building energy consumption and environmental impact.
[0003] Solar energy, as a common renewable energy source, is most popular due to its availability, ease of conversion into electricity, and the fact that it does not produce harmful gases during use. Solar photovoltaic power generation systems, with their mature technology and ease of conversion into electricity, have become one of the important directions for the development of renewable energy worldwide.
[0004] However, the utilization of solar energy also faces some challenges. Photovoltaic and solar thermal systems are greatly affected by climate change and the alternation of day and night, leading to unstable system operation. At higher temperatures, the photoelectric conversion efficiency of photovoltaic systems decreases; while traditional air-source heat pumps are also affected in performance at lower ambient temperatures. Therefore, new technologies are needed to improve the overall utilization efficiency of solar energy. Utility Model Content
[0005] The purpose of this invention is to address the problem mentioned in the background art that photovoltaic thermal systems are greatly affected by climate change and day-night cycles, leading to unstable system operation. Therefore, this invention proposes a PV / T coupled air source heat pump hot water system.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A PV / T coupled air source heat pump water heating system includes an air source heat pump water heater unit, a hot water circulating pump, an insulated water tank, a hot water supply pump, a plate heat exchanger pump, a plate heat exchanger, and a liquid-cooled PV / T photovoltaic thermal panel. The inlet and outlet of the air source heat pump water heater unit are connected to the hot water circulating pump and the insulated water tank, respectively. The insulated water tank is equipped with a temperature sensor I, a temperature sensor II, and a level gauge. The hot water supply pump and an electric valve are located outside the insulated water tank. The inlet and outlet of the PV / T heat exchanger pump are connected to the liquid-cooled PV / T photovoltaic thermal panel and the plate heat exchanger, respectively. The plate heat exchanger and the insulated water tank are connected via the plate heat exchanger pump.
[0008] Preferably, the insulated water tank has an overflow inlet in the middle and an overflow outlet on one side.
[0009] Preferably, the outlet of the insulated water tank is connected to the inlet of the hot water supply pump.
[0010] Preferably, the output terminals of both the temperature sensor II and the level gauge are connected to the input terminal of the electric valve.
[0011] Preferably, the liquid-cooled PV / T photovoltaic thermal panel is equipped with an automatic venting valve and a temperature sensor III.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. This invention utilizes the electricity generated by solar photovoltaic (PV) thermal panels to power the system itself or the daily lives of users, thereby reducing reliance on traditional grid electricity. This not only reduces the amount of coal burned for thermal power generation but also significantly reduces environmental pollution. Furthermore, the system monitors the temperature of the PV thermal panels and effectively transfers the heat generated by the panels through plate heat exchangers, lowering the panel temperature and thus improving the efficiency of photovoltaic power generation. The system can also produce hot water for user use.
[0014] 2. This invention integrates air-source heat pump technology, which can extract heat from the surrounding air to supplement the heat energy required for hot water production when the heat generated by the photovoltaic thermal panel is insufficient. This heat recovery method combining photovoltaics and air-source heat pumps not only enhances the stability of the system but also significantly improves the overall energy utilization efficiency, achieving excellent energy-saving results. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of a PV / T coupled air source heat pump water heating system proposed in this utility model.
[0016] In the diagram: 1 Air source heat pump water heater unit, 2 Hot water circulating pump, 3 Hot water supply pump, 4 Overflow port, 5 Insulated water tank, 6 Overflow water inlet, 7 Temperature sensor I, 8 Temperature sensor II, 9 Level gauge, 10 Electric valve, 11 Plate heat exchanger pump, 12 Plate heat exchanger, 13 PV / T heat exchanger pump, 14 Liquid-cooled PV / T photovoltaic thermal panel, 15 Automatic vent valve, 16 Temperature sensor III. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0018] Reference Figure 1 A PV / T coupled air source heat pump water heating system includes an air source heat pump water heater 1, a hot water circulation pump 2, an insulated water tank 5, a hot water supply pump 3, a plate heat exchanger pump 11, a plate heat exchanger 12, and a liquid-cooled PV / T photovoltaic thermal panel 14. The inlet and outlet of the air source heat pump water heater 1 are connected to the hot water circulation pump 2 and the insulated water tank 5, respectively. The plate heat exchanger pump 11 is responsible for circulating the heat transfer medium inside the plate heat exchanger 12 to absorb and transfer heat.
[0019] In this embodiment, the insulated water tank 5 is provided with an overflow inlet 6 in the middle and an overflow outlet 4 on one side. The outlet of the insulated water tank 5 is connected to the inlet of the hot water supply pump 3 to deliver hot water to the user side.
[0020] In this embodiment, the insulated water tank 5 is equipped with a temperature sensor I7, a temperature sensor II8, and a level gauge 9. The outside of the insulated water tank 5 is equipped with a hot water supply pump 3 and an electric valve 10. The output terminals of the temperature sensor II8 and the level gauge 9 are both connected to the input terminal of the electric valve 10. The hot water supply pump 3 performs actions according to the temperature sensor I7; the electric valve 10 performs actions according to the temperature sensor II8 and the level gauge 9.
[0021] In this embodiment, the inlet and outlet of the PV / T hot water pump 13 are connected to the liquid-cooled PV / T photovoltaic thermal panel 14 and the plate heat exchanger 12, respectively. The liquid-cooled PV / T photovoltaic thermal panel 14 is equipped with an automatic venting valve 15 and a temperature sensor Ⅲ16. The plate heat exchanger 12 is connected to the insulated water tank 5 through the plate hot water pump 11.
[0022] Working principle:
[0023] When temperature sensor III16 and temperature sensor II8 detect that the temperature of the liquid-cooled PV / T photovoltaic thermal panel 14 is higher than that of the insulated water tank 5, the PV / T hot water pump 13 starts, recovers the heat of the PV / T photovoltaic thermal panel 14 through the antifreeze, and then heats the cold water in the insulated water tank through the plate heat exchanger 12.
[0024] When the level gauge 9 detects that the water level is lower than the preset minimum level, the electric valve 9 will be activated to start the water replenishment process. Water will flow into the insulated water tank 5 through the overflow water inlet 6 until the water level reaches the preset level. When the level gauge 9 detects that the water level reaches or exceeds the preset maximum level, the control system will close the electric valve 9 to stop water replenishment and prevent the water tank from becoming too full.
[0025] When temperature sensor I7 detects that the temperature of the insulated water tank 5 is lower than the set value, the air source heat pump water heater unit 1 starts up, extracts heat from the surrounding air, and transfers this heat to the insulated water tank 5 through refrigerant circulation. At the same time, the hot water circulation pump 2 starts up, driving the hot water in the insulated water tank 5 to circulate and ensure uniform heat distribution. When the temperature of the insulated water tank 5 is higher than the set value, the air source heat pump water heater unit 1 shuts down, and the hot water supply pump 3 supplies water to the user side.
[0026] In this embodiment, air-source heat pump technology is integrated, which can extract heat from the surrounding air to supplement the heat energy required for hot water production when the heat generated by the photovoltaic thermal panel is insufficient. This heat recovery method combining photovoltaics and air-source heat pumps not only enhances the stability of the system but also significantly improves the overall energy utilization efficiency, achieving excellent energy-saving results.
[0027] In this embodiment, the electricity generated by solar photovoltaic (PV) thermal panels is used to power the system itself or the daily lives of users, thereby reducing reliance on traditional grid electricity. This not only reduces the amount of coal burned for thermal power generation but also significantly reduces environmental pollution. Furthermore, the system monitors the temperature of the PV thermal panels and effectively transfers the heat generated by the panels through plate heat exchangers, lowering the panel temperature and thus improving the efficiency of photovoltaic power generation. The system can also produce hot water for user use.
[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A PV / T coupled air source heat pump hot water system, comprising an air source heat pump hot water unit (1), a hot water circulating pump (2), an insulated water tank (5), a hot water supply pump (3), a plate heat exchanger pump (11), a plate heat exchanger (12), and a liquid-cooled PV / T photovoltaic thermal panel (14), characterized in that: The inlet and outlet of the air source heat pump water heater (1) are connected to the hot water circulation pump (2) and the insulated water tank (5) respectively. The insulated water tank (5) is equipped with temperature sensor I (7), temperature sensor II (8) and level gauge (9). The outside of the insulated water tank (5) is equipped with hot water supply pump (3) and electric valve (10). The inlet and outlet of the PV / T heat exchanger pump (13) are connected to the liquid-cooled PV / T photovoltaic thermal plate (14) and plate heat exchanger (12) respectively. The plate heat exchanger (12) is connected to the insulated water tank (5) through the plate heat exchanger pump (11).
2. The PV / T coupled air source heat pump hot water system according to claim 1, characterized in that: The insulated water tank (5) is provided with an overflow inlet (6) in the middle and an overflow outlet (4) on one side.
3. A PV / T coupled air source heat pump hot water system according to claim 1, characterized in that: The outlet of the insulated water tank (5) is connected to the inlet of the hot water supply pump (3).
4. A PV / T coupled air source heat pump hot water system according to claim 1, characterized in that: The output terminals of the temperature sensor II (8) and the level gauge (9) are both connected to the input terminal of the electric valve (10).
5. A PV / T coupled air source heat pump hot water system according to claim 1, characterized in that: The liquid-cooled PV / T photovoltaic thermal panel (14) is equipped with an automatic venting valve (15) and a temperature sensor III (16).