Novel anti-freeze solar heat collecting module

Abstract

The invention discloses a novel anti-freeze solar heat collecting module which comprises a base plate. Aluminum alloy baffles are arranged on the four edges of the base plate. A heat insulating plate is bonded to the inner surface of the base plate. A branch pipe and a heat collecting plate are installed on the heat insulating plate. A converging pipe extending to the outer side of one aluminum alloy baffle is arranged between the branch pipe. The surface of the heat collecting plate is coated with a carbon powder layer. A transparent cover plate is arranged above the heat collecting plate and connected with the aluminum alloy baffles in a clamped mode. According to the novel anti-freeze solar heat collecting module, through the structural design of adding artificial roughness and fins on the heat collecting plate, the heat exchange area of the heat collecting plate is increased in a disguised form, the convection and heat exchange effects are improved, and heat exchange on the surface of the heat collecting plate is enhanced; through the combination of the carbon powder layer applying on the surface of the module, the unification of the high solar absorptance of the surface coating and the low emissivity is achieved, the efficiency of absorbing the solar radiation energy is improved, the thermal radiation loss of the heat absorbing plate is reduced, and the working efficiency of the heat collector is improved.

Description

technical field [0001] The invention relates to the technical field of solar heat collectors, in particular to a novel freeze-resistant solar heat collection module. Background technique [0002] In the heat utilization of solar energy, the key is to convert the sun's radiant energy into heat energy. Because the solar energy is relatively scattered, it must be concentrated, so the heat collector is a key part of various solar energy devices. Most of the existing heat collectors adopt flat plate structure design, the heat transfer area of ​​the heat collector is small, which is not conducive to improving the effect of convective heat transfer, and the difference between the high solar absorption ratio and low emissivity of the surface coating reduces the absorption of solar radiation. The efficiency of radiant energy increases the heat radiation loss of the heat absorbing plate itself and reduces the working efficiency of the collector, and the cover plate is mostly a glass ...

AI Technical Summary

Problems solved by technology

Most of the existing heat collectors adopt flat plate structure design, the heat transfer area of ​​the heat collector is small, which is not conducive to improving the effect of convective heat transfer, and the difference between the high solar absorption ratio and low emissivity of the surface coating reduces the absorption of solar radiation. The efficiency of radiant energy increases the heat radiation loss of the heat absorbing plate itself and reduces the working efficiency of the collector, and the cover plate is mostly a glass plate with a frame, which not only has poor heat insulation performance, but also cannot realize adjacent solar energy. The seamless connection of the heat collection modules reduces the effective light transmission and heat absorption area, which cannot effectively prevent the heat conduction inside and outside the modules, and reduces the heat collection efficiency of the modules. Moreover, the traditional solar heat collection modules have poor antifreeze performance, which greatly reduces the heat collection efficiency. The service life of thermal modules, resulting in waste of resources

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