Photovoltaic PVT, photo-thermal and heat pump combined heating system

Abstract

A photovoltaic PVT, photo-thermal and heat pump combined heating system comprises a heat storage water tank, a photo-thermal device, a water pool, a ground source heat pump, a photovoltaic PVT and a controller, the heat storage water tank is communicated with an inlet and an outlet of a heating pipe of a house through a water supply pipe and a water return pipe respectively, and the water supply pipe is communicated with a heating pump. The heat storage water tank communicates with the inlet end of the photo-thermal device through a first water inlet pipe and communicates with the outlet end of the photo-thermal device through a first water outlet pipe, and the first water inlet pipe communicates with a solar pump. The ground source heat pump communicates with the water pool through a second water inlet pipe and a third water outlet pipe and communicates with the heat storage water tank through a third water inlet pipe and a second water outlet pipe, and the third water inlet pipe communicates with an air conditioner pump. According to the utility model, the photovoltaic PVT power generation device is arranged, and the photovoltaic PVT power generation device generates power to supply power to each electronic component in the heating system, so that the power consumption of a user can be reduced. And meanwhile, the photovoltaic PVT waste heat recovery device and the photo-thermal device are used for heating water in the water pool in four seasons, so that the energy consumption of the ground source heat pump is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of heating, and in particular relates to a photovoltaic PVT+photothermal+heat pump combined heating system. Background Art

[0002] In winter, people install heating equipment in their homes to stay warm and comfortable. Heating equipment includes floor heating and radiators. These heating methods all use water as a medium for heat circulation. Heat generation can be divided into solar heating and ground-source heat pump heating. However, using only ground-source heat pumps or solar heating can lead to unstable heating and high electricity consumption, which can affect heating comfort and increase the financial burden. Utility Model Content

[0003] The purpose of this utility model is to provide a photovoltaic PVT+solar thermal+heat pump combined heating system to solve the technical problems raised in the above background technology.

[0004] To achieve the above objectives, the specific technical solution of a photovoltaic PVT + solar thermal + heat pump combined heating system of the utility model is as follows:

[0005] A combined photovoltaic (PVT) + solar thermal (CSP) + heat pump heating system includes a hot water storage tank, a CSP device, a water tank, a ground-source heat pump, a photovoltaic (PVT) device, and a controller. The hot water storage tank is connected to the inlet and outlet of the house's heating pipes via a water supply pipe and a return pipe, respectively, and the water supply pipe is connected to the heating pump. The hot water storage tank is connected to the inlet of the CSP device via water inlet pipe 1, and to the outlet of the CSP device via water outlet pipe 1, and is connected to the solar pump via water inlet pipe 1. The ground-source heat pump is connected to the water tank via water inlet pipe 2 and water outlet pipe 3, and is connected to the hot water storage tank via water inlet pipe 3 and water outlet pipe 2, and is connected to the air conditioning pump via water inlet pipe 3. The photovoltaic (PVT) device supplies power to the heating pump, solar pump, air conditioning pump, and ground-source heat pump. The controller is electrically connected to the photovoltaic (PVT) heating pump, solar pump, air conditioning pump, and ground-source heat pump.

[0006] Furthermore, the photovoltaic (PVT) system includes a photovoltaic (PVT) waste heat recovery device, a photovoltaic power generation device, and heat exchange tube 1. Heat exchange tube 1 is located within the pool, and its inlet is connected to the outlet of the photovoltaic (PVT) waste heat recovery device via outlet pipe 4. The outlet of the heat exchange tube is connected to the inlet of the photovoltaic (PVT) waste heat recovery device via inlet pipe 4, which is equipped with a photovoltaic pump. Inlet pipe 5 is connected to a refill tank. The photovoltaic (PVT) waste heat recovery device is electrically connected to the photovoltaic pump and controller. The photovoltaic (PVT) waste heat recovery device and solar thermal device are used to heat the pool, while the photovoltaic power generation device powers the solar pump, air conditioning pump, and ground-source heat pump.

[0007] Furthermore, water inlet pipe 2 is connected to a well water pump and control valve 2, while water outlet pipe 1 is connected to control valve 1. A heat storage inlet pipe is connected to water inlet pipe 2 between the well water pump and control valve 2, and the heat storage inlet pipe is connected to the inlet of the solar thermal device. A heat storage return pipe is connected between the outlet of the solar thermal device and water outlet pipe 3. Control valves 4 and 3 are connected to the heat storage inlet pipe and heat storage return pipe, respectively.

[0008] Furthermore, a protective valve is provided on the water inlet pipe 1, and the protective valve includes a manual emptying valve and an automatic emptying valve respectively connected in parallel to the water inlet pipe 1, and the automatic emptying valve is electrically connected to the controller.

[0009] Furthermore, the hot water storage tank is connected to a tap water pipe and a hot water pipe, and a second heat exchange pipe is provided in the hot water storage tank, and the second heat exchange pipe is connected to the tap water pipe and the hot water pipe.

[0010] Furthermore, a liquid replenishing pipe is provided on the hot water storage tank, and a control valve five is connected between the liquid replenishing pipe and the hot water pipe.

[0011] The utility model's photovoltaic PVT + solar thermal + heat pump combined heating system has the following advantages:

[0012] 1. This utility model utilizes a photovoltaic (PVT) power generation device to power the various electronic components in the heating system, reducing user electricity consumption. Furthermore, a photovoltaic (PVT) waste heat recovery device combined with a solar thermal system heats the pool water year-round, thereby reducing the energy consumption of the ground-source heat pump.

[0013] 2. This utility model connects water inlet pipe 2 to the inlet of the solar thermal device through a heat storage inlet pipe, and connects the outlet of the solar thermal device to water outlet pipe 3 through a heat storage return pipe. During the non-heating period, the heat absorbed by the solar thermal device can be stored in a water pool, thereby reducing the energy consumption of the ground-source heat pump during winter heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a plan view of a photovoltaic PVT + solar thermal + heat pump combined heating system of the utility model;

[0015] Description of the marks in the figure:

[0016] 1. Heat storage tank; 2. Water tank; 3. Solar thermal device; 4. Ground source heat pump; 5. Inlet pipe 1; 51. Solar pump; 6. Outlet pipe 1; 61. Control valve 1; 7. Manual drain valve; 71. Automatic drain valve; 8. Water supply pipe; 81. Heating pump; 9. Return pipe; 10. Inlet pipe 2; 101. Control valve 2; 11. Inlet pipe 3; 12. Outlet pipe 2; 13. Outlet pipe 3; 14. Inlet Water pipe four; 141. Photovoltaic PVT waste heat recovery device; 15. Water outlet pipe four; 16. Heat exchange pipe one; 17. Fluid replenishment tank; 18. Photovoltaic pump; 19. Heat storage return pipe; 191. Control valve three; 20. Heat storage inlet pipe; 201. Control valve four; 21. Tap water pipe; 22. Hot water pipe; 23. Fluid replenishment pipe; 231. Control valve five; 24. Heat exchange pipe two; 25. Well water pump; 26. Air conditioning pump. DETAILED DESCRIPTION

[0017] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of the photovoltaic PVT+solar thermal+heat pump combined heating system of the present invention in conjunction with the accompanying drawings.

[0018] like Figure 1 As shown, the present invention provides a combined photovoltaic (PVT) + solar thermal + heat pump heating system, comprising a heat storage tank 1, a solar thermal device 3, a water tank 2, a ground-source heat pump 4, a photovoltaic (PVT) system, and a controller. The controller is electrically connected to the photovoltaic (PVT) system, the heating pump 81, the solar pump 51, the air conditioning pump 26, and the ground-source heat pump 4, enabling the controller to control each of its connected components. The heat storage tank 1 is connected to the inlet and outlet of the house's heating pipes via a water supply pipe 8 and a return pipe 9, respectively, forming a circuit. The heating pump 81 is also connected to the water supply pipe 8. The solar thermal device 3 and ground-source heat pump 4 heat the water in the hot water storage tank 1, while the photovoltaic (PVT) system heats the water in the pool 2. The water is then reheated by the ground-source heat pump 4 and transported to the hot water storage tank 1. During winter heating, the controller activates the heating pump 81, which transports the hot water from the hot water storage tank 1 through the supply pipe 8 to the house's heating pipe. The water is then transported back to the hot water storage tank 1 through the return pipe 9, which connects to the supply pipe, completing the water circulation process and achieving the purpose of heating the house. The electricity generated by the photovoltaic (PVT) system can be used by various electronic components in the heating system, effectively reducing power consumption during winter heating. It is important to note that both the supply pipe 8 and the return pipe 9 are equipped with valves that control their opening and closing. Opening and closing the valves connects the heating pipe to the hot water storage tank 1. An exhaust pipe for exhaust is also connected to the top of the hot water storage tank 1, and this exhaust pipe is also equipped with a valve (not shown).

[0019] Specifically, the lower middle portion of the hot water storage tank 1 is connected to the inlet of the solar thermal device 3 via an inlet pipe 5, while the upper middle portion of the hot water storage tank 1 is connected to the outlet of the solar thermal device 3 via an outlet pipe 6, forming a circuit. A solar pump 51 is connected to the inlet pipe 5. The solar pump 51 operates by transferring water from the hot water storage tank 1 to the solar thermal device 3 via the inlet pipe 5. The water in the solar thermal device 3 is heated and then transferred back to the hot water storage tank 1 via the outlet pipe 6, exchanging heat with the water in the hot water storage tank 1 and heating the water medium within the hot water storage tank 1. When the water temperature in the hot water storage tank 1 reaches the set temperature, the controller sends a signal to the heating pump 81, thereby heating the house.

[0020] If the water temperature in the hot water tank 1 does not reach the set temperature set by the solar thermal device 3, the ground-source heat pump 4 is activated to heat the water in the hot water tank 1. The ground-source heat pump 4 is connected to the hot water tank 1 via the second inlet pipe 10 and the third outlet pipe 13, which communicate with the pool 2. This allows the water in the pool 2 to circulate through the ground-source heat pump 4. The ground-source heat pump 4 is also connected to the hot water tank 1 via the third inlet pipe 11 and the second outlet pipe 12, allowing the ground-source heat pump 4 to circulate the water in the hot water tank 1. During operation, the ground-source heat pump 4 draws the water in the pool 2, which has undergone heat exchange with the underground heat source, through the second inlet pipe 10 and delivers it to the pool 2 through the third outlet pipe 13. The water in hot water tank 1 enters the ground-source heat pump 4 through water inlet pipe 3 11 and then flows back into hot water tank 1 through water outlet pipe 2 12 . The water in pool 2 and the water in hot water tank 1 exchange heat as they pass through the ground-source heat pump 4, thereby raising the water temperature in hot water tank 1. The combined effect of ground-source heat pump 4 and solar thermal device 3 improves the heating effect within the house while also reducing the energy consumption of ground-source heat pump 4.

[0021] To prevent the aqueous medium in the solar thermal device 3 from freezing, a protective valve is provided on the water inlet pipe 1 5 , through which the aqueous medium in the solar thermal device 3 can be discharged back into the hot water storage tank 1 . The protective valve specifically includes a manual drain valve 7 and an automatic drain valve 71 , both connected in parallel to the water inlet pipe 1 5 . The automatic drain valve 71 is electrically connected to the controller.

[0022] Preferably, the photovoltaic (PVT) system includes a photovoltaic (PVT) waste heat recovery device 141, a photovoltaic power generation device, and heat exchange tube 16. The photovoltaic power generation device in the photovoltaic (PVT) system provides power to the solar pump 51, the air conditioning pump 26, and the ground-source heat pump 4. Specifically, the photovoltaic (PVT) system includes a battery that stores the electricity generated by the photovoltaic power generation device. The battery is then electrically connected to various electronic components in the heating system, such as the heating pump 81, the solar pump 51, the air conditioning pump 26, and the ground-source heat pump 4. Of course, the battery can also be connected to other electronic components in the home to power them, reducing household electricity costs. The photovoltaic PVT waste heat recovery device 141 in the photovoltaic PVT is electrically connected to the controller, the heat exchange tube 16 is arranged in the water pool 2, and the inlet end of the heat exchange tube 16 is connected to the outlet end of the photovoltaic PVT waste heat recovery device 141 through the outlet pipe 4 15, and the outlet end of the heat exchange tube 16 is connected to the inlet end of the photovoltaic PVT waste heat recovery device 141 through the inlet pipe 4 14, and a photovoltaic pump 18 is provided on the inlet pipe 4 14, and the photovoltaic pump 18 is connected to the battery for power supply. Specifically, the controller activates photovoltaic pump 18, which transports water from pool 2 through water inlet pipe 4 14 to photovoltaic (PVT) waste heat recovery device 141. This heats the water medium, which then flows through outlet pipe 4 15 into heat exchange pipe 1 16. Heat exchange pipe 1 16 then exchanges heat with the water medium within pool 2, allowing the water medium in photovoltaic (PVT) waste heat recovery device 141 to circulate and heat the water in pool 2, effectively reducing the energy consumption of ground-source heat pump 4. To facilitate replenishment of the water medium in photovoltaic (PVT) waste heat recovery device 141, a refill tank 17 is connected to water inlet pipe 5, with a valve installed between refill tank 17 and water inlet pipe 5.

[0023] As another preferred embodiment, the second water inlet pipe 10 is connected to a well water pump 25 and a second control valve 101, and the first water outlet pipe 6 is connected to a first control valve 61. Furthermore, a heat storage inlet pipe 20 is connected to the second water inlet pipe 10 between the well water pump 25 and the second control valve 101. This heat storage inlet pipe 20 is connected to the inlet end of the solar thermal device 3, and a heat storage return pipe 19 is connected between the outlet end of the solar thermal device 3 and the third water outlet pipe 13. The heat storage inlet pipe 20 and the heat storage return pipe 19 are connected to a fourth control valve 201 and a third control valve 191, respectively. When heating is not required, the heat collected by the solar thermal device 3 can be stored in the pool 2, thereby reducing the energy consumption of the ground-source heat pump 4 during heating. During the heat storage period, it is necessary to close the control valve 2 101 and the control valve 1 61, then open the control valve 4 201 and the control valve 3 191, and start the well water pump 25. The well water pump 25 transports the water medium in the pool 2 to the photothermal device 3 through the water inlet pipe 2 10 and the heat storage inlet pipe 20 for heating. The heated water medium then flows into the pool 2 through the heat storage return pipe 19 and the water outlet pipe 3 13, ultimately achieving the purpose of heating and storing the water medium in the pool 2.

[0024] To facilitate the supply of hot water to users, a tap water pipe 21 and a hot water pipe 22 are connected to the hot water storage tank 1. A second heat exchange pipe 24 is provided inside the hot water storage tank 1, which is connected to the tap water pipe 21 and the hot water pipe 22. The water entering the second heat exchange pipe 24 through the tap water pipe 21 exchanges heat with the water medium in the hot water storage tank 1, causing the tap water to heat up before being discharged through the hot water pipe 22. It is understood that a valve is provided on the hot water pipe 22 to control its opening and closing. At the same time, if Figure 1 As shown, the hot water storage tank 1 is also provided with a liquid replenishment pipe 23, and a control valve 5 231 is connected between the liquid replenishment pipe 23 and the hot water pipe 22. When the control valve 5 231 is opened, tap water entering the hot water pipe 22 flows through the control valve 5 231 into the liquid replenishment pipe 23, and then into the hot water storage tank 1 through the liquid replenishment pipe 23. To replenish the hot water storage tank 1 with water, the valve on the exhaust pipe must be opened and closed after replenishment is complete.

[0025] It should be noted that the air conditioning pump 26 is also connected to the water inlet pipe 3 11. When the air conditioning is turned on in the summer, the ground source heat pump 4 can be directly started, and the water medium in the pool 2 will exchange heat with the ground, causing the water medium in the pool 2 to cool down. The ground source heat pump 4 circulates the water medium in the pool 2 and the water medium in the hot water tank 1, and the air conditioning pump 26 is working to blow out cool air, achieving a cooling effect on the house in the summer. Figure 1 As shown, in order to facilitate the later repair and maintenance of the heating system, valves are installed on each pipeline.

[0026] Instructions for use: During the heat storage period, control valve 2 101 and control valve 1 61 need to be closed, then control valve 4 201 and control valve 3 191 need to be opened, and well water pump 25 started. Well water pump 25 will transport the water medium in pool 2 through water inlet pipe 2 10 and heat storage inlet pipe 20 to the photothermal device 3 for heating. The heated water medium will then flow into pool 2 through heat storage return pipe 19 and water outlet pipe 3 13, ultimately achieving the purpose of heating and storing the water medium in pool 2. During the heating period, control valve 3 191 and control valve 4 201 need to be closed, and control valve 1 61 and control valve 2 101 need to be opened, and solar pump 51 started. Solar pump 51 will transport the heat generated in photothermal device 3 through the water medium to the hot water storage tank 1, and then through the heating pump 81 on the water supply pipe 8 to the heating pipe of the house for heating. At the same time, the water in pool 2 is heated by the photovoltaic (PVT) waste heat recovery device 141, and the water in pool 2 is also heated by heat exchange with the underground heat source. When the solar thermal device 3 cannot heat the water in the hot water tank 1 to the set temperature, the ground source heat pump 4 is activated, and the ground source heat pump 4 transfers the water medium in pool 2 to the hot water tank 1 for heating, thereby bringing the water temperature in the hot water tank 1 to the set temperature. The battery in the photovoltaic (PVT) also powers the electronic components of the heating system and can also provide electricity for normal user needs.

[0027] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A photovoltaic (PVT) + solar thermal + heat pump combined heating system, characterized by: The system comprises a heat storage tank (1), a solar thermal device (3), a water pool (2), a ground source heat pump (4), a photovoltaic (PVT) and a controller. The heat storage tank (1) is connected to the inlet and outlet of a heating pipe of a house through a water supply pipe (8) and a return pipe (9), respectively. A heating pump (81) is connected to the water supply pipe (8). The heat storage tank (1) is connected to the inlet end of the photothermal device (3) through a water inlet pipe (5), and the heat storage tank (1) is connected to the outlet end of the photothermal device (3) through a water outlet pipe (6), and a solar pump (51) is connected to the water inlet pipe (5); The ground source heat pump (4) is connected to the water pool (2) through the second water inlet pipe (10) and the third water outlet pipe (13), and the ground source heat pump (4) is connected to the hot water storage tank (1) through the third water inlet pipe (11) and the second water outlet pipe (12), and the third water inlet pipe (11) is connected to the air conditioning pump (26); Photovoltaic PVT supplies power to the heating pump (81), solar pump (51), air conditioning pump (26) and ground source heat pump (4); The controller is electrically connected to the photovoltaic (PVT) heating pump (81), the solar pump (51), the air conditioning pump (26) and the ground source heat pump (4).

2. The photovoltaic (PVT) + solar thermal + heat pump combined heating system according to claim 1, characterized in that: The photovoltaic PVT comprises a photovoltaic PVT waste heat recovery device (141), a photovoltaic power generation device and a heat exchange pipe (16). The heat exchange pipe (16) is arranged in the water pool (2), and the inlet end of the heat exchange pipe (16) is connected to the outlet end of the photovoltaic PVT waste heat recovery device (141) through a water outlet pipe (15), and the outlet end of the heat exchange pipe is connected to the inlet end of the photovoltaic PVT waste heat recovery device (141) through a water inlet pipe (14), and a photovoltaic pump (18) is provided on the water inlet pipe (14); the water inlet pipe (5) is connected to a liquid replenishing tank (17); The photovoltaic (PVT) waste heat recovery device (141) is electrically connected to the photovoltaic pump (18) and the controller; The photovoltaic (PVT) waste heat recovery device + the photothermal device are used to heat the water pool (2), and the photovoltaic power generation device supplies power to the solar pump (51), the air conditioning pump (26) and the ground source heat pump (4).

3. The photovoltaic (PVT) + solar thermal + heat pump combined heating system according to claim 2, characterized in that: The water inlet pipe 2 (10) is connected to a well water pump (25) and a control valve 2 (101), the water outlet pipe 1 (6) is connected to a control valve 1 (61), and the water inlet pipe 2 (10) is connected to a heat storage inlet pipe (20) located between the well water pump (25) and the control valve 2 (101), and the heat storage inlet pipe (20) is connected to the inlet end of the photothermal device (3), and a heat storage return pipe (19) is connected between the outlet end of the photothermal device (3) and the water outlet pipe 3 (13); The heat storage inlet pipe (20) and the heat storage return pipe (19) are respectively connected to a control valve four (201) and a control valve three (191).

4. The photovoltaic (PVT) + solar thermal + heat pump combined heating system according to any one of claims 1 to 3, characterized in that: The water inlet pipe (5) is provided with a protective valve, and the protective valve comprises a manual emptying valve (7) and an automatic emptying valve (71) respectively connected in parallel to the water inlet pipe (5), and the automatic emptying valve (71) is electrically connected to the controller.

5. The photovoltaic (PVT) + solar thermal + heat pump combined heating system according to claim 4, characterized in that: The hot water storage tank (1) is connected to a tap water pipe (21) and a hot water pipe (22), and a second heat exchange pipe (24) is provided in the hot water storage tank (1), and the second heat exchange pipe (24) is connected to the tap water pipe (21) and the hot water pipe (22).

6. The photovoltaic (PVT) + solar thermal + heat pump combined heating system according to claim 5, characterized in that: The hot water storage tank (1) is provided with a liquid replenishing pipe (23), and a control valve (231) is connected between the liquid replenishing pipe (23) and the hot water pipe (22).

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