Infrared reflection full-film-system straight-through type flat plate collector made of aluminum section bars

Abstract

The invention relates to an infrared reflection full-film-system straight-through type flat plate collector and belongs to the field of photo-thermal application. Each fin collector tube is a single-channel fin tube integrally formed by an aluminum section bar, electric wielding laminating is not needed, the whole tube can directly contact with energy-storing water and is large in heat conduction area, a liquid heat-conduction medium is arranged in the fin collector tube, two ends of the fin collector tube are fixed on flat plate liquid distribution channels through movable joints respectively, and the heat-conduction medium directly communicate the fin collector tube and the flat plate liquid distribution channels. A full-film-system selective absorbing coating formed by a multilayer composite film is plated on the surfaces of the fin collector tubes through ion sputtering. Compared with a traditional coiled-tube or staggered-tube collector, the infrared reflection full-film-system straight-through type flat plate collector has the advantages that the overall heat absorption and heat conduction efficiency of the collector are increased; chemical corrosion is avoided, the overall service life of the collector is prolonged effectively, aerogel thermal insulating materials are used to greatly increase thermal insulating performance, and good anti-freezing performance is achieved; the collector is simple and reliable in structure and capable of facilitating building integral design.

Description

technical field [0001] The invention relates to the technical field of a straight-through flat plate heat collector, in particular to a fluid that passes through the entire finned heat collecting tube after being diverted by a plate liquid separating channel, and the finned tube is coated with a full-film selective absorption coating Straight-through flat plate collectors. Background technique [0002] The plate core of the existing flat plate heat collector is mostly made of serpentine tubes or fork tubes, both of which are made of two kinds of metals, copper and aluminum, and the heat-absorbing film layer through spot welding and pressing process. The contact area is small, and copper and aluminum are easy to produce Electrochemical corrosion, many welding parts, poor heat conduction, complex or long pipelines, large pipeline pressure loss, easy cracking and leakage of pipelines, and when the temperature is low in winter, collectors using water circulation are also prone t...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a straight-through flat plate heat collector of pure aluminum profile infrared reflection full-film system to overcome the low overall heat transfer efficiency of traditional flat plate heat collectors, and adopts a copper-aluminum pressing process to combine The contact area is small and the contact thermal resistance is large, which is prone to electrochemical corrosion and the service life is low, and the traditional flat plate collectors mostly use serpentine tubes or forked heat pipes, resulting in long process, large heat loss and pressure loss, etc.

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