A pvt heat pump system
By integrating design and active heat dissipation modules, the energy loss problem of photovoltaic modules and heat pump water heaters operating independently is solved, realizing efficient heat dissipation of photovoltaic modules and utilization of low-grade heat energy, improving system efficiency and reliability, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-28
AI Technical Summary
Traditional photovoltaic modules and heat pump water heater systems operate independently, resulting in energy loss and low efficiency. Furthermore, existing PVT heat pump systems are complex in structure and expensive.
The system adopts an integrated design, combining an active heat dissipation module, a PVT module integrated evaporator module, and a thermal cycle core module. It utilizes a micro fan for active heat dissipation and integrates a flat-plate evaporator to collect low-grade heat generated by the photovoltaic module, thus optimizing the thermal cycle process.
It improves the power generation efficiency and lifespan of photovoltaic modules, reduces system costs, and enhances the seasonal energy efficiency ratio and year-round economic performance of heat pump water heaters.
Smart Images
Figure CN224567677U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of water heater technology, and more specifically, relates to a PVT heat pump system. Background Technology
[0002] Traditional photovoltaic modules and heat pump water heater systems typically operate independently, each with its own energy loss.
[0003] On the one hand, while absorbing sunlight, photovoltaic modules generate a large amount of heat, which reduces power generation efficiency and shortens the lifespan of photovoltaic cells. Furthermore, the low-grade heat energy generated is often wasted. Passive cooling or simple fan cooling methods have limited effectiveness and cannot effectively reduce the operating temperature of photovoltaic modules.
[0004] On the other hand, heat pump water heater systems consume a lot of electricity during operation, and their heat transfer efficiency is affected by a variety of factors. In low-temperature conditions in winter, the energy efficiency ratio is significantly reduced, which not only affects the overall performance of the system but also increases operating costs.
[0005] Existing systems include three-cycle PVT heat pump water heating systems based on pump-supply. This PVT heat pump water heating system can operate in three cycles: refrigerant cooling pump supply, refrigerant refrigeration pump supply, and refrigerant siphon pump supply. However, its system structure is complex and the overall construction cost is high. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides a PVT heat pump system that, through integrated design, efficiently utilizes the low-grade heat generated by photovoltaic modules, thereby improving the seasonal energy efficiency ratio and year-round economic performance of the heat pump water heater.
[0007] The present invention adopts the following technical solution.
[0008] The first aspect of this utility model provides a PVT heat pump system, including: an active heat dissipation module, a PVT component integrated evaporator module, and a thermal circulation core module;
[0009] The active cooling module includes multiple micro fans for cooling the integrated evaporator module of the PVT component;
[0010] The PVT component integrated evaporator module includes a PVT component and an evaporator, wherein the evaporator is a flat plate evaporator and is integrated on the back of the PVT component.
[0011] The core module of the thermal cycle includes a compressor, a condenser, and an expansion valve connected in sequence. The expansion valve and the compressor are respectively connected to the inlet and outlet of the evaporator.
[0012] Preferably, the micro fan is embedded in a groove provided inside the frame of the PVT component.
[0013] Preferably, the active heat dissipation module has ventilation holes on the frame of the PVT component, and the ventilation holes correspond to the micro fan.
[0014] Preferably, in the core module of the thermal cycle, the condenser is placed in the hot water storage tank; a temperature sensor is installed in the hot water storage tank to monitor the temperature inside the hot water storage tank in real time.
[0015] Preferably, the condenser is a condenser coil made of metal tubing.
[0016] Preferably, a drain valve is installed outside the hot water storage tank to control the discharge of hot water from the tank.
[0017] Preferably, temperature sensors are provided on the surface of the PVT assembly, as well as on the evaporator, the inlet and outlet of the condenser tube.
[0018] Preferably, pressure sensors are provided at the compressor inlet and outlet and at the expansion valve inlet and outlet.
[0019] Preferably, the PVT component integrates an evaporator module connected to an external DC / DC converter, and then connected to a DC / AC converter for grid-connected power supply.
[0020] Preferably, the PVT component integrates an evaporator module connected to an external DC / DC converter, and is then connected to a circuit breaker that connects a fuse and a lithium battery in series.
[0021] Compared with the prior art, the beneficial effects of this utility model include at least the following:
[0022] 1. The efficient integration of photovoltaic modules and heat pump systems simplifies system design, reduces installation and maintenance costs, and improves the overall efficiency and reliability of the system;
[0023] 2. Integrating PVT modules and micro fans to achieve efficient active heat dissipation of photovoltaic modules. This utility model embeds the micro fans into the grooves set inside the frame of the PVT modules. The hidden design reduces wind resistance and noise, keeps the operating temperature of the photovoltaic modules within a suitable range, improves power generation efficiency and extends service life.
[0024] 3. By integrating the flat-plate evaporator onto the back of the PVT module, the low-grade heat generated by the photovoltaic module is transferred to the heat pump system through refrigerant circulation, which efficiently utilizes the low-grade heat generated by the photovoltaic module and improves the seasonal energy efficiency ratio and year-round economic performance of the heat pump water heater. Attached Figure Description
[0025] Figure 1This is a schematic diagram of a PVT heat pump system that efficiently utilizes the low-grade heat of photovoltaic modules, according to an embodiment of the present utility model.
[0026] Figure 2 This is a circuit topology diagram of a PVT heat pump system that efficiently utilizes the low-grade heat of photovoltaic modules, according to an embodiment of the present utility model.
[0027] Figure 1 In the diagram, 1 is the active heat dissipation module, 2 is the PVT component, 3 is the component surface temperature sensor, 4 is the evaporator, 5 is the evaporator inlet temperature sensor, 6 is the evaporator outlet temperature sensor, 7 is the compressor inlet pressure sensor, 8 is the compressor outlet pressure sensor, 9 is the compressor, 10 is the condenser inlet temperature sensor, 11 is the condenser outlet temperature sensor, 12 is the discharge valve, 13 is the hot water storage tank, 14 is the condenser, 15 is the hot water storage tank temperature sensor, 16 is the pressure sensor before the expansion valve, 17 is the pressure sensor after the expansion valve, and 18 is the expansion valve.
[0028] Figure 2 In the diagram, 19 is a bidirectional DC / AC converter, 20 is a DC / DC converter, 21 is a circuit breaker QF, 22 is a fuse FU, 23 is a lithium battery, 24 is a controller, 25 is a temperature sensor, and 26 is a pressure sensor. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of this utility model, not all embodiments. Based on the spirit of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0030] like Figure 1 As shown, Embodiment 1 of this utility model provides a PVT heat pump system, including: an active heat dissipation module, a PVT component integrated evaporator module, and a thermal cycle core module.
[0031] The active heat dissipation module 1 includes multiple micro fans, which are embedded in grooves set inside the frame of the PVT component.
[0032] This integration method can reduce wind resistance and noise, optimize heat dissipation by precisely controlling the speed of the micro fan, keep the operating temperature of PVT component 2 and evaporator 4 within a suitable range, and protect the micro fan from the influence of the external environment, thus extending the service life of the micro fan.
[0033] Specifically, the groove provides a stable mounting position for the micro fan, ensuring its stability during long-term operation. The frame prevents the micro fan from being directly exposed, increasing its lifespan and reliability. Ventilation holes are designed on the frame, corresponding to the micro fan, to ensure smooth airflow. The optimized design of these ventilation holes ensures sufficient airflow while reducing wind resistance and noise.
[0034] The PVT module integrated evaporator module includes a PVT module 2 and an evaporator 4. The evaporator is a flat-plate evaporator integrated on the back of the PVT module, preferably but not limited to using microchannel copper tubing, or a metal plate flow channel. A module surface temperature sensor 3 is installed on the surface of the PVT module 2 to monitor the PVT module temperature in real time.
[0035] like Figure 2 As shown, the PVT component integrates an evaporator module connected to an external DC / DC converter 20, which is then connected to a bidirectional DC / AC converter 19 for grid-connected power supply. A circuit breaker QF 21 is connected to a fuse FU 22 and a lithium battery 23 in series. The circuit breaker QF 21 can manually disconnect and close the connection between the lithium battery 23 and the DC bus, and the fuse FU 22 can prevent damage to the lithium battery 23 from high-current surges. A compressor 9, an active cooling module 1, and a controller 24 are connected to meet the power requirements of the PVT heat pump system.
[0036] The PVT module 2 converts sunlight into electrical energy, and the evaporator 4 collects the waste heat generated when the PVT module is working, converting the low-grade heat energy that would otherwise be wasted into useful heat energy, improving heat exchange efficiency, and realizing efficient combined heat and power.
[0037] The core module of the thermal cycle includes a compressor 9, a condenser 14, and an expansion valve 18 connected in sequence. The expansion valve 18 and the compressor 9 are respectively connected to the inlet and outlet of the evaporator 4.
[0038] The compressor 9 causes the refrigerant to flow in the PVT heat pump system by doing work, and the refrigerant completes heat exchange through the condenser 14, expansion valve 18, and evaporator 4.
[0039] The condenser 14 exchanges heat with the water in the hot water storage tank 13, raising the water temperature in the tank. Heat exchange via the compressor 9 raises the water temperature to the user-set temperature. A hot water storage tank temperature sensor 15 monitors the water temperature and transmits the data to the controller 24. A drain valve 12 is installed outside the hot water storage tank to control the discharge of hot water from the tank.
[0040] An evaporator inlet temperature sensor 5 is installed at the inlet of evaporator 4, and an evaporator outlet temperature sensor 6 is installed at the outlet of evaporator 4; a condenser inlet temperature sensor 10 is installed at the inlet of condenser 14, and a condenser outlet temperature sensor 11 is installed at the outlet of condenser 14; a compressor inlet pressure sensor 7 is installed at the inlet of compressor 9, and a compressor outlet pressure sensor 8 is installed at the outlet of compressor 9; an expansion valve pre-pressure sensor 16 is installed at the inlet of expansion valve 18, and an expansion valve post-pressure sensor 17 is installed at the outlet of expansion valve 18. The above temperature sensors 25 and pressure sensors 26 are monitored by controller 24 to adjust the operating status of the PVT heat pump system.
[0041] It is worth noting that, in the embodiments of this utility model, the numbers are merely an expression for clearly describing a specific implementation of a PVT heat pump system, and not an absolute limitation. Under the guidance of the core concept of this utility model, changing the order of the numbers to obtain the same or similar technical effects all fall within the scope of this utility model.
[0042] Finally, it should be noted that the above embodiments are only used to illustrate the present utility model and not to limit it. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present utility model should be covered within the protection scope of the claims of the present utility model.
Claims
1. A PVT heat pump system, characterized in that, include: Active cooling module, PVT component integrated evaporator module, and thermal cycle core module; The active cooling module includes multiple micro fans for cooling the integrated evaporator module of the PVT component; The PVT component integrated evaporator module includes a PVT component and an evaporator, wherein the evaporator is a flat plate evaporator and is integrated on the back of the PVT component. The core module of the thermal cycle includes a compressor, a condenser, and an expansion valve connected in sequence. The expansion valve and the compressor are respectively connected to the inlet and outlet of the evaporator.
2. The PVT heat pump system according to claim 1, characterized in that: The micro fan is embedded in a groove set inside the frame of the PVT component.
3. The PVT heat pump system according to claim 1, characterized in that: The active heat dissipation module has ventilation holes on the frame of the PVT component, and the ventilation holes correspond to the micro fan.
4. A PVT heat pump system according to claim 1, characterized in that: In the core module of the thermal cycle, the condenser is placed in the hot water storage tank; a temperature sensor is installed in the hot water storage tank to monitor the temperature inside the tank in real time.
5. A PVT heat pump system according to claim 1 or 4, characterized in that: The condenser is a condenser coil made of metal tubing.
6. A PVT heat pump system according to claim 4, characterized in that: A drain valve is installed outside the hot water storage tank to control the discharge of hot water from the tank.
7. A PVT heat pump system according to claim 1, characterized in that: Temperature sensors are installed on the surface of the PVT assembly, as well as at the inlet and outlet of the evaporator and the condenser.
8. A PVT heat pump system according to claim 1, characterized in that: Pressure sensors are installed at the compressor inlet and outlet and at the expansion valve inlet and outlet.
9. A PVT heat pump system according to claim 1, characterized in that: The PVT component integrates an evaporator module connected to an external DC / DC converter, which is then connected to a DC / AC converter for grid-connected power supply.
10. A PVT heat pump system according to claim 1 or 7, characterized in that: The PVT component integrates an evaporator module connected to an external DC / DC converter, and is then connected to a circuit breaker that connects a fuse and a lithium battery in series.