Solar photovoltaic photo-thermal heat collector with porous foam metal heat-exchange structure

A porous metal foam and solar photovoltaic technology, which is applied in the field of solar photovoltaic photothermal heat collectors, can solve the problems of high-efficiency heat exchange, low convective heat transfer coefficient, and short heat transfer process of cooling gas, and achieve convective heat transfer effects The effect of enhancing, increasing the heat exchange area, and improving the heat exchange effect

Active Publication Date: 2018-04-17
SOUTHEAST UNIV
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Problems solved by technology

[0005] The current gas-type solar photovoltaic thermal collectors mostly adopt single-channel common convective cooling. The main problems are: the gas flow rate is high but the convective heat transfer coefficient is low; the single-channel heat transfer process is short, and the cooling gas cannot be cooled. Efficient heat exchange

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  • Solar photovoltaic photo-thermal heat collector with porous foam metal heat-exchange structure
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Embodiment Construction

[0031] Attached below figure 1 And attached figure 2 For further elaboration:

[0032] A structural schematic diagram of a solar photovoltaic photothermal heat collector with a porous metal foam heat exchange structure, the heat collector includes a heat collection cavity 12, the side wall of the heat collection cavity 12 is a metal frame 13, and the top is a The glass cover plate 1, the bottom is an insulating layer (8), and the same side wall of the heat collecting cavity 12 is provided with a heat collector air inlet 10 and a heat collector air outlet 11; from the bottom of the heat collecting cavity 12 A thermal insulation layer 8 and a heat absorbing layer 7 are arranged in sequence upward, a metal foam layer 6 is arranged on the heat absorbing layer 7, and a thermally conductive substrate 5 and a photovoltaic cell element 4 are sequentially arranged on the upper surface of the metal foam layer 6 from bottom to top. The upper surface of the photovoltaic cell element 4 ...

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Abstract

The invention discloses a solar photovoltaic photo-thermal heat collector with a porous foam metal heat-exchange structure. The solar photovoltaic photo-thermal heat collector adopts a structure of up-down double cooling channels, combines with a porous foam metal layer (6) for heat-exchange enhancement, the temperature of solar photovoltaic elements is reduced, the power generation efficiency ofthe solar photovoltaic elements is improved, at the same time, a large amount of heat generated by the solar photovoltaic elements is timely transmitted to cooling gas, and the cooling gas is discharged from a heat collector air outlet (11) to be used for preheating, drying, indoor heating and the like. According to the solar photovoltaic photo-thermal heat collector with the porous foam metal heat-exchange structure, the applied foam metal has a high thermal conductivity and a high specific surface area, the cooling efficiency of traditional solar photovoltaic photo-thermal heat collectors can be effectively improved, and the down-inflow and up-outflow modes are adopted, so that the heat-exchange process is close to the counter-current heat exchange and the heat-exchange efficiency achieves the highest.

Description

technical field [0001] The invention relates to a solar photovoltaic photothermal heat collector with a porous foam metal heat exchange structure, belonging to the field of solar heat collectors. Background technique [0002] Solar energy is inexhaustible, and it is one of the renewable energy sources with good application prospects. There are mainly two ways to use solar energy: photovoltaic power generation and photothermal utilization; the power generation efficiency of photovoltaic generators is usually 12%~ 17%, most of the remaining solar radiation will be converted into heat energy, and part of the heat energy will be absorbed by photovoltaic elements, causing the temperature of photovoltaic elements to rise. The research on photovoltaic cell cooling device is of great significance. At present, photovoltaic components are mainly cooled by natural convection or forced convection. At the same time, the heated air in the ordinary battery cooling process is not reused, w...

Claims

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Application Information

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IPC IPC(8): F24S20/00F24S10/70F24S80/00H02S40/42
CPCH02S40/425Y02E10/50
Inventor 施娟林凯威陈振乾
Owner SOUTHEAST UNIV
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