Solar thermal collector

Abstract

The invention discloses a solar thermal collector. The solar thermal collector comprises two transparent glass blind tubes which are connected with each other in a sleeving manner in the same direction, opening ends of the internal glass blind tube and the external glass blind tube are welded, a vacuum cavity is formed between the internal glass blind tube and the external glass blind tube, metal tubes are arranged in the internal glass blind tube, a heat transfer medium is arranged in each metal tube, a solar thermal absorbing film is arranged on the outer surface of each metal tube, and a light condensing reflector of which the cross section is in the shape of a concave arc is arranged in the vacuum cavity. The thermal collector is simple in structure, easy to process and good in pressure bearing property; and by the light condensing reflector of which the cross section is in the shape of a concave arc, light energy is used fully, moreover, the energy flux density of outer surface layers of the glass tubes can be increased by the gathered light energy, and the output temperature of condensing ends of the glass tubes is higher than the output temperature of other existing thermal collecting tubes.

Description

technical field [0001] The invention relates to a solar heat collecting tube, in particular to a solar heat collector. Background technique [0002] At present, both at home and abroad are attaching great importance to clean and environmentally friendly, renewable energy, and most of us human beings are consuming non-renewable energy, and a large amount of damage to the environment, catastrophic damage to the earth, global warming, a large amount of carbon dioxide emissions and consumption can not be Renewable energy is a challenge for human beings, and based on this, the use of solar energy emerges as the times require, but the existing solar collectors have poor light concentrating effects and need to be improved. Contents of the invention [0003] In view of this, the object of the present invention is to provide a solar heat collector with good light concentrating effect, simple structure, convenient processing and easy use. [0004] The purpose of the present inventi...

AI Technical Summary

Problems solved by technology

[0002] At present, both at home and abroad are attaching great importance to clean and environmentally friendly, renewable energy, and most of us human beings are consuming non-renewable energy, and a large amount of damage to the environment, catastrophic damage to the earth, global warming, a large amount of carbon dioxide emissions and consumption can not be Renewable energy is a challenge for human beings. Based on this, the use of solar energy has emerged as the times require. However, the existing solar collectors have poor light concentrating effects and need to be improved.

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