Straight ribbed pipe fin inserting trough-type condensation vacuum solar heat collector

Abstract

The invention discloses a straight ribbed pipe fin inserting trough-type condensation vacuum solar heat collector which comprises a vacuum heat collector body and a trough-type condenser; the vacuum heat collector body is arranged in a condensation position of the trough-type condenser, and comprises a direct connection type glass vacuum casing pipe; a vacuum layer is formed between an outer glass pipe and an inner glass pipe; a straight ribbed pipe is arranged in the inner glass pipe in a penetrating manner, and is fixed through springs; two arc-shaped heat insulating plates are arranged in the vacuum layer; and two fins are arranged on the outer side of the straight ribbed pipe. The straight ribbed pipe fin inserting trough-type condensation vacuum solar heat collector has the advantages that the condensation heat collection efficiency is high, the heat flux density received by a heat collection pipe is uniform, the external radiation heat loss of the inner glass pipe is little, the heat collection pipe is not prone to scaling, and the service life is long.

Description

technical field [0001] The invention relates to the field of green energy, in particular to a trough-type vacuum solar heat collector with finned straight finned tubes. Background technique [0002] With the continuous popularization of green buildings and building energy conservation, the development and utilization of solar collectors have been paid more and more attention. Due to the relatively low flux density of solar energy, in practical large-scale applications, the temperature of the heat-collecting working medium of common flat-plate solar collectors is low, the heat loss is large, and the thermal efficiency is very low. [0003] The concentrating glass vacuum tube solar collector can further increase the collection area of ​​solar radiation energy flow and the working temperature of the collector on the basis of making full use of the light weight and high efficiency of the glass vacuum tube collector, and effectively expand the traditional vacuum tube collector. ...

AI Technical Summary

Problems solved by technology

[0007] At present, improved concentrators such as structures and reflective film materials are widely used at home and abroad, and there is almost no improvement in the structure of vacuum heat collecting tubes to achieve secondary or multiple concentrating and improve the problem of uneven heat flux density.

In view of the uneven heat density received by the vacuum heat collection tube caused by the trough-type concentration and the large heat loss of the inner glass tube of the heat collection tube in the case of medium and high temperature, the thermal efficiency of the solar vacuum heat collection tube itself is not high, and it is easy to scale, etc. problem, the applicant devised the invention

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