PVT power generation water circulation drying system

Abstract

The invention discloses a PVT power generation water circulation drying system. The drying system comprises a PVT photovoltaic power generation system, a heat preservation water tank in circulation communication with the PVT photovoltaic power generation system, a double-source heat pump unit in circulation communication with the heat preservation water tank, a hot water tank in circulation communication with the double-source heat pump unit and drying equipment in circulation communication with the hot water tank. The drying equipment comprises a drying chamber, a circulating air pipe communicated with an air inlet and an air outlet of the drying chamber, a hot water fin type heat exchanger arranged in the circulating air pipe, and a fan arranged in the circulating air pipe and used for blowing heat of the hot water fin type heat exchanger into the drying chamber. According to the system, heat absorbed by the PVT photovoltaic power generation system in the power generation process is used for supplying heat to the drying equipment, so that solar energy is fully utilized, and waste of green energy is reduced.

Description

Technical Field

[0001] The present invention relates to the field of PVT photovoltaics, and more specifically to a PVT power generation water circulation drying system. Background Art

[0002] The development and utilization of renewable energy such as wind energy, biomass energy and solar energy is an important way to save fossil energy and solve environmental pollution. At present, the application of solar low-temperature water heating system and solar photovoltaic power generation system has been rapidly developed. In some areas, the economic efficiency and energy saving effect of domestic solar water heating system have been shown. Independent and grid-connected photovoltaic power generation systems are relatively mature in technology, but due to the high cost of system power generation, large-scale application needs to rely on national policies, but ultimately it must be achieved by significantly reducing the cost of photovoltaic system power generation.

[0003] Clean, low-carbon, safe and efficient use of energy is the general trend. At present, the global energy structure is in the stage of accelerating transformation from oil and gas to non-fossil energy. my country's energy is also in the stage of diversified development of fossil energy and non-fossil energy and transformation to non-fossil energy. The process of green and low-carbon energy development and utilization is further accelerated. This provides a strong driving force for achieving high-quality economic and social development and sustainable development.

[0004] However, the existing photovoltaic power generation only utilizes the generated electrical energy, and does not effectively utilize the thermal energy generated by the heat absorbed by the photovoltaic panels, resulting in a low utilization rate of solar energy and a waste of resources. Summary of the invention

[0005] In view of the above-mentioned defects of the prior art, the present invention provides a PVT power generation water circulation drying system.

[0006] The technical solution adopted by the present invention to solve the technical problem is: construct a PVT power generation water circulation drying system, the drying system includes a PVT photovoltaic power generation system, an insulation water tank cyclically connected to the PVT photovoltaic power generation system, a dual-source heat pump unit cyclically connected to the insulation water tank, a hot water tank cyclically connected to the dual-source heat pump unit, and a drying device cyclically connected to the hot water tank; The drying equipment comprises a drying chamber, a circulating air duct connecting the air inlet and the air outlet of the drying chamber, a hot water fin heat exchanger arranged in the circulating air duct, and a fan arranged in the circulating air duct for blowing the heat of the hot water fin heat exchanger into the drying chamber.

[0007] In the PVT power generation water circulation and drying system described in the present invention, the PVT photovoltaic power generation system and the insulated water tank are circulated and connected via a first water inlet pipe and a first water outlet pipe. The first water inlet pipe is used to transport water in the PVT photovoltaic power generation system to the insulated water tank, and the first water outlet pipe is used to transport water in the insulated water tank to the PVT photovoltaic power generation system. The first water inlet pipe or the first water outlet pipe is provided with a first circulating water pump for promoting water circulation between the PVT photovoltaic power generation system and the insulated water tank.

[0008] In the PVT power generation water circulation drying system of the present invention, the first circulation water pump is arranged on the first water inlet pipe, and the first circulation water pump is used to pump the hot water generated by the PVT photovoltaic power generation system to the thermal insulation water tank; The first water inlet pipe is provided with a first water inlet solenoid valve for controlling the connection or disconnection of the first water inlet pipe, and the first water outlet pipe is provided with a first water outlet solenoid valve for controlling the connection or disconnection of the first water outlet pipe; The first water inlet pipe is also provided with an expansion tank connected to the first water inlet pipe and a pressure sensor for detecting the water pressure in the first water inlet pipe. The expansion tank is connected to the first water inlet pipe through a first branch pipe, and the first branch pipe is provided with a water replenishment solenoid valve for controlling the connection or disconnection of the first branch pipe.

[0009] In the PVT power generation water circulation drying system described in the present invention, the insulated water tank and the dual-source heat pump unit are circulated and connected via a second water inlet pipe and a second water outlet pipe. The second water inlet pipe is used to transport the water in the insulated water tank to the dual-source heat pump unit, and the second water outlet pipe is used to transport the water in the dual-source heat pump unit to the insulated water tank. A second circulating water pump is provided on the second water inlet pipe or the second water outlet pipe to promote water circulation between the insulated water tank and the dual-source heat pump unit.

[0010] In the PVT power generation water circulation drying system of the present invention, the second circulation water pump is arranged on the second water outlet pipe, and the second circulation water pump is used to pump water in the dual-source heat pump unit to the insulation water tank; The second water inlet pipe is provided with a second water inlet solenoid valve for controlling the connection or disconnection of the second water inlet pipe, and the second water outlet pipe is provided with a second water outlet solenoid valve for controlling the connection or disconnection of the second water outlet pipe.

[0011] In the PVT power generation water circulation drying system described in the present invention, the dual-source heat pump unit and the hot water tank are circulated and connected via a third water inlet pipe and a third water outlet pipe. The third water inlet pipe is used to transport the water in the dual-source heat pump unit to the hot water tank, and the third water outlet pipe is used to transport the water in the hot water tank to the dual-source heat pump unit. The third water inlet pipe or the third water outlet pipe is provided with a third circulation water pump for promoting water circulation between the dual-source heat pump unit and the hot water tank.

[0012] In the PVT power generation water circulation drying system of the present invention, the third circulating water pump is arranged on the third water outlet pipe, and the third circulating water pump is used to pump water in the hot water tank to the dual-source heat pump unit; The third water inlet pipe is provided with a third water inlet solenoid valve for controlling the connection or disconnection of the third water inlet pipe, and the third water outlet pipe is provided with a third water outlet solenoid valve for controlling the connection or disconnection of the third water outlet pipe.

[0013] In the PVT power generation water circulation drying system described in the present invention, the hot water tank and the hot water fin heat exchanger are circulated through a fourth water inlet pipe and a fourth water outlet pipe. The fourth water inlet pipe is used to transport the water in the hot water tank to the hot water fin heat exchanger, and the fourth water outlet pipe is used to transport the water in the hot water fin heat exchanger to the hot water tank. The fourth water inlet pipe or the fourth water outlet pipe is provided with a fourth circulation water pump for promoting water circulation between the hot water tank and the hot water fin heat exchanger.

[0014] In the PVT power generation water circulation drying system of the present invention, the fourth circulation water pump is arranged on the fourth water inlet pipe, and the fourth circulation water pump is used to pump water in the hot water tank to the hot water fin heat exchanger; The fourth water inlet pipe is provided with a fourth water inlet solenoid valve for controlling the fourth water inlet pipe to be connected or disconnected, and the fourth water outlet pipe is provided with a fourth water outlet solenoid valve for controlling the fourth water outlet pipe to be connected or disconnected.

[0015] In the PVT power generation water circulation drying system of the present invention, an electric heater is further provided in the circulation air duct, and a temperature sensor for detecting the temperature in the drying chamber is further provided in the drying chamber.

[0016] The implementation of the PVT power generation water circulation drying system of the present invention has the following beneficial effects: when the PVT power generation water circulation drying system of the present invention is used, during the solar power generation process of the PVT photovoltaic power generation system, the back plate arranged on the back of the photovoltaic panel absorbs heat and transfers the heat to the cooling water. After absorbing the heat, the cooling water flows to the insulation water tank through the circulation pipe, and then flows to the PVT photovoltaic power generation system through the circulation pipe to form a cooling water cycle. At the same time, through the circulation system between the dual-source heat pump unit, the insulation water tank, the hot water tank, and the hot water fin heat exchanger, the hot water is transferred to the hot water fin heat exchanger, so that the heat in the hot water fin heat exchanger increases and dissipates outward through the fins. Finally, the fan blows the heat in the circulation duct into the drying room to play a role in heating and drying. This system uses the heat absorbed by the PVT photovoltaic power generation system during the power generation process to heat the drying equipment, so that the solar energy is fully utilized and the waste of green energy is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which: Figure 1It is a structural schematic diagram of the PVT power generation water circulation drying system of the present invention. DETAILED DESCRIPTION

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, in the first embodiment of the PVT power generation water circulation drying system of the present invention, the drying system 10 includes a PVT photovoltaic power generation system 11, an insulated water tank 12 circulatingly connected to the PVT photovoltaic power generation system 11, a dual-source heat pump unit 13 circulatingly connected to the insulated water tank 12, a hot water tank 14 circulatingly connected to the dual-source heat pump unit 13, and a drying device 15 circulatingly connected to the hot water tank 14.

[0020] The drying device 15 includes a drying chamber 16, a circulating air duct 19 connecting an air inlet 17 and an air outlet 18 of the drying chamber 16, a hot water fin heat exchanger 20 disposed in the circulating air duct 19, and a fan 21 disposed in the circulating air duct 19 for blowing the heat of the hot water fin heat exchanger 20 into the drying chamber 16.

[0021] Specifically, during the solar power generation process of the PVT photovoltaic power generation system 11, the back panel arranged on the back of the photovoltaic panel absorbs heat and transfers the heat to the cooling water. After absorbing the heat, the cooling water flows to the insulation water tank 12 through the first water inlet pipe 22, and then flows to the PVT photovoltaic power generation system 11 through the first water outlet pipe 23 to form a cooling water circulation, which will be described in detail later.

[0022] Furthermore, the dual-source heat pump unit 13 forms a second cycle with the insulation water tank 12 by using the second water inlet pipe 31 and the second water outlet pipe 32, the hot water tank 14 forms a third cycle with the dual-source heat pump unit 13 through the third water inlet pipe 36 and the third water outlet pipe 37, and the hot water fin heat exchanger 20 forms a fourth cycle with the hot water tank 14 through the fourth water inlet pipe 41 and the fourth water outlet pipe 42. During the circulation between the hot water tank 14 and the hot water fin heat exchanger 20, the hot water fin heat exchanger 20 dissipates heat outward, and the heat lost by the hot water fin heat exchanger 20 is blown into the drying chamber 16 for drying through the fan 21, which will be described in detail later.

[0023] When the PVT power generation water circulation drying system of the present invention is used, during the solar power generation process of the PVT photovoltaic power generation system 11, the back plate arranged on the back of the photovoltaic panel absorbs heat and transfers the heat to the cooling water. After absorbing the heat, the cooling water flows to the insulation water tank 12 through the circulation pipe, and then flows to the PVT photovoltaic power generation system 11 through the circulation pipe to form a cooling water circulation. At the same time, through the circulation system between the dual-source heat pump unit 13, the insulation water tank 12, the hot water tank 14, and the hot water fin heat exchanger 20, the hot water is transferred to the hot water fin heat exchanger 20, so that the heat in the hot water fin heat exchanger 20 increases and dissipates outward through the fins. Finally, the fan 21 blows the heat in the circulation duct 19 into the drying chamber 16, which plays a role in heating and drying. This system uses the heat absorbed by the PVT photovoltaic power generation system 11 during the power generation process to heat the drying equipment 15, so that the solar energy is fully utilized and the waste of green energy is reduced.

[0024] Specifically, the PVT photovoltaic power generation system 11 and the insulated water tank 12 are connected in a circulation manner through a first water inlet pipe 22 and a first water outlet pipe 23. The first water inlet pipe 22 is used to transport water in the PVT photovoltaic power generation system 11 to the insulated water tank 12, and the first water outlet pipe 23 is used to transport water in the insulated water tank 12 to the PVT photovoltaic power generation system 11. The first water inlet pipe 22 or the first water outlet pipe 23 is provided with a first circulating water pump 24 for promoting water circulation between the PVT photovoltaic power generation system 11 and the insulated water tank 12.

[0025] Furthermore, the first circulating water pump 24 is disposed on the first water inlet pipe 22 , and the first circulating water pump 24 is used to pump hot water generated by the PVT photovoltaic power generation system 11 to the thermal insulation water tank 12 .

[0026] The first water inlet pipe 22 is provided with a first water inlet solenoid valve 25 for controlling the connection or disconnection of the first water inlet pipe 22 , and the first water outlet pipe 23 is provided with a first water outlet solenoid valve 26 for controlling the connection or disconnection of the first water outlet pipe 23 .

[0027] During the water circulation process of the PVT photovoltaic power generation system 11 and the insulated water tank 12, the first water inlet solenoid valve 25 and the first water outlet solenoid valve 26 are controlled to open, and the first circulation water pump 24 is started to form a water circulation between the PVT photovoltaic power generation system 11 and the insulated water tank 12, thereby achieving cooling of the photovoltaic panels and collection and storage of thermal energy.

[0028] The first water inlet pipe 22 is also provided with an expansion tank 27 connected to the first water inlet pipe 22, and a pressure sensor 28 for detecting the water pressure in the first water inlet pipe 22. The expansion tank 27 is connected to the first water inlet pipe 22 through a first branch pipe 29, and the first branch pipe 29 is provided with a water replenishment solenoid valve 30 for controlling the connection or disconnection of the first branch pipe 29.

[0029] By setting up the expansion tank 27 and the pressure sensor 28, the pressure sensor 28 detects the water pressure in the first water inlet pipe 22 in real time. When the water pressure decreases, the water replenishment solenoid valve 30 can be controlled to open, and the water in the expansion tank 27 can be squeezed into the first water inlet pipe 22 through the expansion tank 27 to supplement the water pressure in the first water inlet pipe 22.

[0030] Specifically, the insulated water tank 12 and the dual-source heat pump unit 13 are circulated and connected via a second water inlet pipe 31 and a second water outlet pipe 32. The second water inlet pipe 31 is used to transport the water in the insulated water tank 12 to the dual-source heat pump unit 13. The second water outlet pipe 32 is used to transport the water in the dual-source heat pump unit 13 to the insulated water tank 12. A second circulating water pump 33 is provided on the second water inlet pipe 31 or the second water outlet pipe 32 to promote water circulation between the insulated water tank 12 and the dual-source heat pump unit 13.

[0031] Furthermore, the second circulating water pump 33 is disposed on the second water outlet pipe 32 , and the second circulating water pump 33 is used to pump water in the dual-source heat pump unit 13 to the thermal insulation water tank 12 .

[0032] The second water inlet pipe 31 is provided with a second water inlet solenoid valve 34 for controlling the connection or disconnection of the second water inlet pipe 31 , and the second water outlet pipe 32 is provided with a second water outlet solenoid valve 35 for controlling the connection or disconnection of the second water outlet pipe 32 .

[0033] During the water circulation process between the insulated water tank 12 and the dual-source heat pump unit 13 , the second water inlet solenoid valve 34 and the second water outlet solenoid valve 35 are controlled to open, and the second circulating water pump 33 is started to form a water circulation between the insulated water tank 12 and the dual-source heat pump unit 13 .

[0034] Specifically, the dual-source heat pump unit 13 and the hot water tank 14 are connected in a circulation manner through a third water inlet pipe 36 and a third water outlet pipe 37. The third water inlet pipe 36 is used to transport the water in the dual-source heat pump unit 13 to the hot water tank 14, and the third water outlet pipe 37 is used to transport the water in the hot water tank 14 to the dual-source heat pump unit 13. The third water inlet pipe 36 or the third water outlet pipe 37 is provided with a third circulating water pump 38 for promoting water circulation between the dual-source heat pump unit 13 and the hot water tank 14.

[0035] Furthermore, the third circulating water pump 38 is disposed on the third water outlet pipe 37 , and the third circulating water pump 38 is used to pump water in the hot water tank 14 to the dual-source heat pump unit 13 .

[0036] The third water inlet pipe 36 is provided with a third water inlet solenoid valve 39 for controlling the connection or disconnection of the third water inlet pipe 36 , and the third water outlet pipe 37 is provided with a third water outlet solenoid valve 40 for controlling the connection or disconnection of the third water outlet pipe 37 .

[0037] During the water circulation process of the dual-source heat pump unit 13 and the hot water tank 14 , the third water inlet solenoid valve 39 and the third water outlet solenoid valve 40 are controlled to open, and the third circulation water pump 38 is started to form a water circulation between the dual-source heat pump unit 13 and the hot water tank 14 .

[0038] Specifically, the hot water tank 14 and the hot water fin heat exchanger 20 are connected in a circulation manner through a fourth water inlet pipe 41 and a fourth water outlet pipe 42. The fourth water inlet pipe 41 is used to transport water in the hot water tank 14 to the hot water fin heat exchanger 20, and the fourth water outlet pipe 42 is used to transport water in the hot water fin heat exchanger 20 to the hot water tank 14. A fourth circulating water pump 43 is provided on the fourth water inlet pipe 41 or the fourth water outlet pipe 42 for promoting water circulation between the hot water tank 14 and the hot water fin heat exchanger 20.

[0039] Furthermore, the fourth circulating water pump 43 is disposed on the fourth water inlet pipe 41 , and the fourth circulating water pump 43 is used to pump water in the hot water tank 14 to the hot water fin heat exchanger 20 .

[0040] The fourth water inlet pipe 41 is provided with a fourth water inlet solenoid valve 44 for controlling the fourth water inlet pipe 41 to be connected or disconnected. The fourth water outlet pipe 42 is provided with a fourth water outlet solenoid valve 45 for controlling the fourth water outlet pipe 42 to be connected or disconnected.

[0041] During the water circulation process between the hot water tank 14 and the hot water fin heat exchanger 20 , the fourth water inlet solenoid valve 44 and the fourth water outlet solenoid valve 45 are controlled to open, and the fourth circulation water pump 43 is started to form a water circulation between the hot water tank 14 and the hot water fin heat exchanger 20 .

[0042] In this embodiment, an electric heater 46 is further provided in the circulating air duct 19 , and a temperature sensor for detecting the temperature in the drying chamber 16 is further provided in the drying chamber 16 .

[0043] The electric heater 46 is located between the hot water fin heat exchanger 20 and the air inlet 17. When the temperature sensor detects that the temperature in the drying chamber 16 is low, the electric heater 46 is controlled to start or increase the heating power. When the temperature sensor detects that the temperature in the drying chamber 16 is high, the electric heater 46 is controlled to stop or reduce the heating power, thereby realizing intelligent control of the temperature in the drying chamber 16.

[0044] In addition, in the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", "stacked" and the like should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A PVT power generation water circulation drying system, characterized in that: The drying system includes a PVT photovoltaic power generation system, an insulated water tank in circulation communication with the PVT photovoltaic power generation system, a dual-source heat pump unit in circulation communication with the insulated water tank, a hot water tank in circulation communication with the dual-source heat pump unit, and a drying device in circulation communication with the hot water tank; The drying equipment includes a drying chamber, a circulating air duct connecting the air inlet and the air outlet of the drying chamber, a hot water fin heat exchanger arranged in the circulating air duct, and a fan arranged in the circulating air duct to blow the heat of the hot water fin heat exchanger into the drying chamber.

2. The PVT power generation water circulation drying system according to claim 1, characterized in that: The PVT photovoltaic power generation system and the insulated water tank are connected in a circulation manner via a first water inlet pipe and a first water outlet pipe. The first water inlet pipe is used to transport water in the PVT photovoltaic power generation system to the insulated water tank, and the first water outlet pipe is used to transport water in the insulated water tank to the PVT photovoltaic power generation system. The first water inlet pipe or the first water outlet pipe is provided with a first circulating water pump for promoting water circulation between the PVT photovoltaic power generation system and the insulated water tank.

3. The PVT power generation water circulation drying system according to claim 2, characterized in that: The first circulating water pump is arranged on the first water inlet pipe, and is used to pump the hot water generated by the PVT photovoltaic power generation system to the thermal insulation water tank; The first water inlet pipe is provided with a first water inlet solenoid valve for controlling the connection or disconnection of the first water inlet pipe, and the first water outlet pipe is provided with a first water outlet solenoid valve for controlling the connection or disconnection of the first water outlet pipe; The first water inlet pipe is also provided with an expansion tank connected to the first water inlet pipe and a pressure sensor for detecting the water pressure in the first water inlet pipe. The expansion tank is connected to the first water inlet pipe through a first branch pipe, and the first branch pipe is provided with a water replenishment solenoid valve for controlling the connection or disconnection of the first branch pipe.

4. The PVT power generation water circulation drying system according to claim 1, characterized in that: The insulated water tank and the dual-source heat pump unit are connected in a circulation manner via a second water inlet pipe and a second water outlet pipe. The second water inlet pipe is used to transport water in the insulated water tank to the dual-source heat pump unit, and the second water outlet pipe is used to transport water in the dual-source heat pump unit to the insulated water tank. The second water inlet pipe or the second water outlet pipe is provided with a second circulating water pump for promoting water circulation between the insulated water tank and the dual-source heat pump unit.

5. The PVT power generation water circulation drying system according to claim 4, characterized in that: The second circulating water pump is arranged on the second water outlet pipe, and the second circulating water pump is used to pump water in the dual-source heat pump unit to the thermal insulation water tank; The second water inlet pipe is provided with a second water inlet solenoid valve for controlling the connection or disconnection of the second water inlet pipe, and the second water outlet pipe is provided with a second water outlet solenoid valve for controlling the connection or disconnection of the second water outlet pipe.

6. The PVT power generation water circulation drying system according to claim 1, characterized in that: The dual-source heat pump unit is connected to the hot water tank in a circulation manner via a third water inlet pipe and a third water outlet pipe. The third water inlet pipe is used to transport water in the dual-source heat pump unit to the hot water tank. The third water outlet pipe is used to transport water in the hot water tank to the dual-source heat pump unit. The third water inlet pipe or the third water outlet pipe is provided with a third circulating water pump for promoting water circulation between the dual-source heat pump unit and the hot water tank.

7. The PVT power generation water circulation drying system according to claim 6, characterized in that: The third circulating water pump is arranged on the third water outlet pipe, and the third circulating water pump is used to pump water in the hot water tank to the dual-source heat pump unit; The third water inlet pipe is provided with a third water inlet solenoid valve for controlling the connection or disconnection of the third water inlet pipe, and the third water outlet pipe is provided with a third water outlet solenoid valve for controlling the connection or disconnection of the third water outlet pipe.

8. The PVT power generation water circulation drying system according to claim 1, characterized in that: The hot water tank and the hot water fin heat exchanger are connected in a circulation manner via a fourth water inlet pipe and a fourth water outlet pipe. The fourth water inlet pipe is used to transport water in the hot water tank to the hot water fin heat exchanger. The fourth water outlet pipe is used to transport water in the hot water fin heat exchanger to the hot water tank. The fourth water inlet pipe or the fourth water outlet pipe is provided with a fourth circulating water pump for promoting water circulation between the hot water tank and the hot water fin heat exchanger.

9. The PVT power generation water circulation drying system according to claim 8, characterized in that: The fourth circulating water pump is arranged on the fourth water inlet pipe, and the fourth circulating water pump is used to pump water in the hot water tank to the hot water fin heat exchanger; The fourth water inlet pipe is provided with a fourth water inlet solenoid valve for controlling the connection or disconnection of the fourth water inlet pipe, and the fourth water outlet pipe is provided with a fourth water outlet solenoid valve for controlling the connection or disconnection of the fourth water outlet pipe.

10. The PVT power generation water circulation drying system according to claim 1, characterized in that: An electric heater is also provided in the circulating air duct, and a temperature sensor for detecting the temperature in the drying chamber is also provided in the drying chamber.

Images