Passive membrane type desorption cooling device for solar cell panel

Abstract

The invention discloses a passive film type desorption cooling device for a solar cell panel, and relates to the technical field of solar cell panel cooling, the passive film type desorption cooling device comprises a photovoltaic cell panel, a porous film layer is arranged below the photovoltaic cell panel, and a solution storage layer is fixed at the top end of the porous film layer; in the daytime, the heat released by the photovoltaic cell panel is utilized to heat the solution in the solution storage layer, the solution is driven to desorb water and evaporate, a large amount of heat is taken away, the solar panel is efficiently cooled, and the working modes of cyclic utilization, daytime cooling and night circulation of the device are completed through the water absorption of the solution at night. According to the solar panel, the solar panel does not need extra energy consumption, the solution filling grooves distributed in an array are arranged, the solution is stored in the small compartments, and the porous film layer has a selective permeability function, so that good packaging and structural compactness of the solution are realized, and rapid conduction of heat of the solar panel is realized by utilizing high thermal conductivity of the solution; in addition, water is taken from air by adding the steam water storage layer, and the application scene of the photovoltaic cell panel is expanded.

Description

Technical Field

[0001] The invention relates to the technical field of solar panel cooling, and in particular to a passive film type analytical cooling device for a solar panel. Background Art

[0002] Solar energy resources are available all over the world. It is an inexhaustible clean energy source. Solar power generation systems can be installed almost anywhere. Solar photovoltaic power generation is clean and pollution-free. It does not require fuel consumption and does not produce greenhouse gases or other harmful substances. It is the main form of renewable energy power supply at present and has great potential in addressing the challenges of energy crisis and climate warming.

[0003] Photovoltaic power generation, as an important way of solar power generation, has been widely promoted and applied around the world, making important contributions to sustainable development and addressing climate change. However, in high-temperature outdoor working environments, the actual power generation and life of photovoltaic panels are greatly affected. When the temperature exceeds 40°C, the efficiency of photovoltaic panels will decrease by about 0.4% for every 1°C increase in temperature. In order to maintain the efficient power generation performance of photovoltaic panels, effective cooling measures are needed to cool the photovoltaic cells.

[0004] At present, the cooling methods of solar panels mainly include active cooling and passive cooling. The active cooling method mainly includes jet impact cooling, air flow cooling, water flow cooling and microchannel cooling. Although the active cooling technology has obvious cooling effect and high flexibility, it requires external energy input to drive the cooling system, which not only increases the energy consumption of the equipment, but also brings a large initial investment to the system, which greatly limits the large-scale application of active cooling in future cooling scenarios.

[0005] The traditional passive cooling method mainly uses phase change materials, radiators and heat pipe structures. The cooling method of phase change materials itself has high cooling performance and good compatibility with photovoltaic panels. However, due to the low thermal conductivity of phase change materials, their cooling density is low, and a large amount of phase change materials is required to achieve cooling of solar panels, which is difficult to meet the huge heat dissipation of large-capacity solar panels. Therefore, the present invention proposes a passive membrane analytical cooling device for solar panels to solve the problems existing in the prior art. Summary of the invention

[0006] In view of the above problems, the purpose of the present invention is to propose a passive membrane analytical cooling device for solar panels, which solves the problem that the current traditional active cooling method requires external energy input to drive the cooling system, which not only increases the energy consumption of the equipment, but also brings a large initial investment to the system, and the traditional passive cooling method is difficult to meet the huge heat dissipation problem of large-capacity solar panels.

[0007] In order to achieve the purpose of the present invention, the present invention is implemented through the following technical scheme: a passive membrane analytical cooling device for solar panels, including a photovoltaic panel, a porous membrane layer is provided below the photovoltaic panel, a solution storage layer is fixed on the top of the porous membrane layer, a heat conductive layer is fixed on the top of the solution storage layer, the heat conductive layer is fixed to the bottom of the photovoltaic panel, a steam water storage layer is provided below the porous membrane layer, a condensation groove is provided on the top of the steam water storage layer, a membrane support layer is fixed on the top of the steam water storage layer, the top of the membrane support layer is fixedly connected to the bottom of the porous membrane layer, and through holes are evenly provided on the membrane support layer.

[0008] A further improvement is that the porous membrane layer is a porous hydrophobic membrane made of PTFE material.

[0009] A further improvement is that: the solution storage layer is provided with an array of solution filling grooves distributed inside, and the solution filling grooves are designed to be connected up and down.

[0010] A further improvement is that the thickness of the side wall of the solution storage layer is 5.5 mm, and the height of the solution storage layer is 5.5 mm.

[0011] A further improvement is that the heat conducting layer is made of metallic copper and the surface of the heat conducting layer is coated with an anti-corrosion coating.

[0012] A further improvement is that the heat-conducting layer is made of metal aluminum, and the surface of the heat-conducting layer is coated with an anti-corrosion coating.

[0013] A further improvement is that heat dissipation ribs are fixed to the bottom of the steam water storage layer, and the heat dissipation ribs are equidistantly distributed at the bottom of the steam water storage layer.

[0014] A further improvement is that both the front and rear side walls of the steam water storage layer are fixed with inlet and outlet water pipes connected to the condensation tank, and the inlet and outlet water pipes are equidistantly distributed on the front and rear side walls of the steam water storage layer.

[0015] The beneficial effects of the present invention are as follows: the present invention utilizes the heat released by the photovoltaic panels to heat the solution in the solution storage layer during the day, and drives the solution to evaporate water, taking away a large amount of heat, and efficiently cooling the solar panels. At night, the water absorption of the solution is used to complete the recycling of the device. The working mode of cooling during the day and circulating at night does not require additional energy consumption, and has wide applicability. An array of solution filling tanks is set up, and the solution is stored in small compartments and the selective permeability of the porous membrane layer is added to achieve good packaging and structural compactness of the solution. The high thermal conductivity of the solution is used to achieve rapid heat extraction from the solar panel. In addition, air water extraction is achieved by adding a steam storage layer, thereby expanding the application scenarios of photovoltaic panels and having more sustainable development prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 is a three-dimensional exploded view of the present invention;

[0018] Figure 3 It is a schematic diagram of the workflow of the present invention.

[0019] Among them: 1. Photovoltaic cell panel; 2. Porous membrane layer; 3. Solution storage layer; 4. Heat conductive layer; 5. Steam water storage layer; 6. Condensation tank; 7. Membrane support layer; 8. Through hole; 9. Solution filling tank; 10. Heat dissipation ribs; 11. Water inlet and outlet pipes. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1

[0022] See also Figure 1 , Figure 2 , Figure 3The present embodiment provides a passive membrane type analytical cooling device for solar panels, comprising a photovoltaic panel 1, a heat conductive layer 4, a solution storage layer 3, a porous membrane layer 2, a membrane support layer 7 and a steam water storage layer 5 which are sequentially distributed from top to bottom, wherein the heat conductive layer 4 is fixed to the bottom of the photovoltaic panel 1 for heat conduction, the solution storage layer 3 is used to store the solution and is fixed to the bottom of the heat conductive layer 4, so that the heat conductive layer 4 can transfer the heat of the photovoltaic panel 1 to the solution in the solution storage layer 3 after it is extracted, and heat the solution to promote the analytical evaporation of the solution, the porous membrane layer 2 is fixed to the bottom of the solution storage layer 3, and has a sealing effect on the bottom of the solution storage layer 3 to prevent the solution from leaking out, and since the mechanical properties of the porous membrane layer 2 are relatively weak, the membrane support layer 7 is fixed to the bottom of the porous membrane layer 2 to The porous membrane layer 2 plays a supporting and fixing role, and the membrane support layer 7 is provided with through holes 8 distributed in a uniform array to facilitate the passage of steam, and the steam water storage layer 5 is fixed to the bottom of the membrane support layer 7 for collecting the steam condensed water passing through the through holes 8. A condensation groove 6 for storing condensed water is provided at the top of the steam water storage layer 5. The heat of the photovoltaic panel 1 is absorbed by the heat conductive layer 4, so that the water inside the solution in the solution storage layer 3 evaporates and absorbs heat. The generated water vapor will pass through the porous membrane layer 2 and the membrane support layer 7 to reach the condensation groove 6 of the steam water storage layer 5, taking away the heat from the bottom of the photovoltaic panel 1, thereby achieving cooling of the photovoltaic panel 1. Compared with traditional hydrogel heat dissipation technology, the cooling efficiency is higher, the dependence on the environment is less, and the operation and maintenance costs are low.

[0023] The porous membrane layer 2 is a porous hydrophobic membrane made of PTFE material. This membrane has selective permeability, allowing small molecular vapor to pass through and restricting large molecular vapor to remain in the solution channel, thus achieving good separation of water vapor and solution.

[0024] The inner side of the solution storage layer 3 is divided into solution filling slots 9 distributed in an array by partitions for storing solutions. The solution filling slots 9 are designed to be connected up and down. The solution is stored in small compartments and the selective permeability function of the porous membrane layer 2 is added to achieve good packaging of the solution and compact structure.

[0025] The thickness of the side wall of the solution storage layer 3 is 5.5 mm, and the height of the solution storage layer 3 is 5.5 mm. The height of the solution in the solution storage layer 3 is 5.5 mm, which can meet the solution storage space of the passive membrane analytical cooling device of the solar panel.

[0026] The thermal conductive layer 4 of the present embodiment is made of metallic copper and has good thermal conductivity, and can efficiently conduct heat from the photovoltaic cell panel. Since the thermal conductive layer 4 is in direct contact with the solution in the solution storage layer 3, in order to prevent the thermal conductive layer 4 from being corroded, the surface of the thermal conductive layer 4 is also coated with an anti-corrosion coating, which plays an anti-corrosion role and improves the service life of the device to a certain extent.

[0027] The bottom of the steam water storage layer 5 is fixed with heat dissipation ribs 10 which are distributed equidistantly in the transverse direction, so as to further improve the heat dissipation and cooling effect of the device and enable the steam in the steam water storage layer 5 to condense quickly.

[0028] Four water inlet and outlet pipes 11 are fixed to the front and rear side walls of the steam water storage layer 5 and are evenly distributed in the transverse direction. The water inlet and outlet pipes 11 are connected to the condensation tank 6 to facilitate the discharge of condensed water in the steam water storage layer 5.

[0029] The working principle of the passive film type analytical cooling device for solar panels in this embodiment is as follows: Figure 3 shown.

[0030] Embodiment 2

[0031] See also Figure 1 , Figure 2 , Figure 3 The present embodiment provides a passive membrane type analytical cooling device for solar panels, comprising a photovoltaic panel 1, a heat conductive layer 4, a solution storage layer 3, a porous membrane layer 2, a membrane support layer 7 and a steam water storage layer 5 which are sequentially distributed from top to bottom, wherein the heat conductive layer 4 is fixed to the bottom of the photovoltaic panel 1 for heat conduction, the solution storage layer 3 is used to store the solution and is fixed to the bottom of the heat conductive layer 4, so that the heat conductive layer 4 can transfer the heat of the photovoltaic panel 1 to the solution in the solution storage layer 3 after it is extracted, and heat the solution to promote the analytical evaporation of the solution, the porous membrane layer 2 is fixed to the bottom of the solution storage layer 3, and has a sealing effect on the bottom of the solution storage layer 3 to prevent the solution from leaking out, and since the mechanical properties of the porous membrane layer 2 are relatively weak, the membrane support layer 7 is fixed to the bottom of the porous membrane layer 2 to The porous membrane layer 2 plays a supporting and fixing role, and the membrane support layer 7 is provided with through holes 8 distributed in a uniform array to facilitate the passage of steam, and the steam water storage layer 5 is fixed to the bottom of the membrane support layer 7 for collecting the steam condensed water passing through the through holes 8. A condensation groove 6 for storing condensed water is provided at the top of the steam water storage layer 5. The heat of the photovoltaic panel 1 is absorbed by the heat conductive layer 4, so that the water inside the solution in the solution storage layer 3 evaporates and absorbs heat. The generated water vapor will pass through the porous membrane layer 2 and the membrane support layer 7 to reach the condensation groove 6 of the steam water storage layer 5, taking away the heat from the bottom of the photovoltaic panel 1, thereby achieving cooling of the photovoltaic panel 1. Compared with traditional hydrogel heat dissipation technology, the cooling efficiency is higher, the dependence on the environment is less, and the operation and maintenance costs are low.

[0032] The porous membrane layer 2 is a porous hydrophobic membrane made of PTFE material. This membrane has selective permeability, allowing small molecular vapor to pass through and restricting large molecular vapor to remain in the solution channel, thus achieving good separation of water vapor and solution.

[0033] The inner side of the solution storage layer 3 is divided into solution filling slots 9 distributed in an array by partitions for storing solutions. The solution filling slots 9 are designed to be connected up and down. The solution is stored in small compartments and the selective permeability function of the porous membrane layer 2 is added to achieve good packaging of the solution and compact structure.

[0034] The thickness of the side wall of the solution storage layer 3 is 5.5 mm, and the height of the solution storage layer 3 is 5.5 mm. The height of the solution in the solution storage layer 3 is 5.5 mm, which can meet the solution storage space of the passive membrane analytical cooling device of the solar panel.

[0035] The thermal conductive layer 4 of the present embodiment is made of metal aluminum and has good thermal conductivity. It can efficiently conduct heat from the photovoltaic panel. Since the thermal conductive layer 4 is in direct contact with the solution in the solution storage layer 3, in order to prevent the thermal conductive layer 4 from being corroded, the surface of the thermal conductive layer 4 is also coated with an anti-corrosion coating, which plays an anti-corrosion role and improves the service life of the device to a certain extent.

[0036] The bottom of the steam water storage layer 5 is fixed with heat dissipation ribs 10 which are distributed equidistantly in the transverse direction, so as to further improve the heat dissipation and cooling effect of the device and enable the steam in the steam water storage layer 5 to condense quickly.

[0037] Four water inlet and outlet pipes 11 are fixed to the front and rear side walls of the steam water storage layer 5 and are evenly distributed in the transverse direction. The water inlet and outlet pipes 11 are connected to the condensation tank 6 to facilitate the discharge of condensed water in the steam water storage layer 5.

[0038] The working principle of the passive film type analytical cooling device for solar panels in this embodiment is as follows: Figure 3 shown.

[0039] In actual use, when there is sufficient sunlight during the day, the bottom of the photovoltaic panel 1 will be overheated, and the heat-conducting layer 4 absorbs the heat of the photovoltaic panel 1, so that the water inside the solution in the solution storage layer 3 evaporates and absorbs heat, and the generated water vapor will pass through the porous membrane layer 2 and the membrane support layer 7 to reach the condensation tank 6 of the steam water storage layer 5, taking away the heat from the bottom of the photovoltaic panel 1, and realizing the process of cooling the photovoltaic panel 1. The solution vapor generated during the cooling process will be confined in the solution storage layer 3 due to its large molecular radius, thus preventing the solution from leaking out;

[0040] At night, the temperature drops, and the temperature of the photovoltaic panel 1 is also low. The solution concentration in the solution storage layer 3 is high and the temperature begins to drop, and the water absorption capacity becomes stronger. At this time, the moisture in the surrounding environment will pass through the porous membrane layer 2 and return to the solution storage layer 3, so that the solution returns to a low concentration state, forming a cycle;

[0041] The above-mentioned passive membrane analytical cooling technology completes the cooling of the solar photovoltaic panel 1 by utilizing the absorption and analytical process of the solution. Compared with the traditional hydrogel heat dissipation technology, it has less dependence on the environment and low operation and maintenance costs. It is an innovation in passive cooling and has broad application prospects in the future.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A passive film type analytical cooling device for solar panels, comprising a photovoltaic panel (1), characterized in that: A porous membrane layer (2) is provided below the photovoltaic cell panel (1), a solution storage layer (3) is fixed on the top of the porous membrane layer (2), a heat conductive layer (4) is fixed on the top of the solution storage layer (3), the heat conductive layer (4) is fixed to the bottom of the photovoltaic cell panel (1), a steam water storage layer (5) is provided below the porous membrane layer (2), a condensation groove (6) is provided on the top of the steam water storage layer (5), a membrane support layer (7) is fixed on the top of the steam water storage layer (5), the top of the membrane support layer (7) is fixedly connected to the bottom of the porous membrane layer (2), and through holes (8) are evenly provided on the membrane support layer (7).

2. A solar panel passive film type analytical cooling device according to claim 1, characterized in that: The porous membrane layer (2) is a porous hydrophobic membrane, which is made of PTFE material.

3. A solar panel passive film type analytical cooling device according to claim 1, characterized in that: Solution filling grooves (9) are distributed in an array inside the solution storage layer (3), and the solution filling grooves (9) are designed to be connected from top to bottom.

4. A solar panel passive film type analytical cooling device according to claim 1, characterized in that: The thickness of the side wall of the solution storage layer (3) is 5.5 mm, and the height of the solution storage layer (3) is 5.5 mm.

5. A solar panel passive film type analytical cooling device according to claim 1, characterized in that: The heat-conducting layer (4) is made of metallic copper, and the surface of the heat-conducting layer (4) is coated with an anti-corrosion coating.

6. A solar panel passive film type analytical cooling device according to claim 1, characterized in that: The heat-conducting layer (4) is made of metal aluminum, and the surface of the heat-conducting layer (4) is coated with an anti-corrosion coating.

7. A solar panel passive film type analytical cooling device according to claim 1, characterized in that: Heat dissipation ribs (10) are fixed to the bottom end of the steam water storage layer (5), and the heat dissipation ribs (10) are distributed at equal intervals at the bottom end of the steam water storage layer (5).

8. The passive film type analytical cooling device for solar panels according to claim 1, characterized in that: The front and rear side walls of the steam water storage layer (5) are both fixed with inlet and outlet water pipes (11) connected to the condensation tank (6), and the inlet and outlet water pipes (11) are evenly distributed on the front and rear side walls of the steam water storage layer (5).

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