Solar thermal collector

Abstract

The invention relates to a solar thermal collector, comprising an upper base plate, a lower base plate, a heat absorbing layer, a rim support frame and a plurality of supporters, wherein the upper base plate and the lower base plate are oppositely arranged, the rim support frame is arranged between the upper base plate and the lower base plate, a cavity is formed by the upper base plate, the lower base plate and the rim support frame, the heat absorbing layer is arranged on the upper surface of the lower base plate in the cavity, the supporters are arranged in the cavity at intervals and respectively contacted with the upper base plate and the heat absorbing layer, and the heat absorbing layer comprises a carbon nano-tube film comprising a plurality of carbon nano-tubes which are attracted and twisted with each other through Van der Waals force.

Description

technical field [0001] The invention relates to a solar heat collector. Background technique [0002] With the development of modern industry and society, human society is increasingly dependent on resources and energy. As we all know, the resources and energy on the earth are limited, so in various economic, political, and scientific research activities, the issue of resources and energy has become the primary issue. And since some resources can be recycled and reused through some artificial processes, the problem of energy is more prominent. Solar energy is the most abundant energy available to human beings, and it is also the cheapest, cleanest, and most promising energy source. Solar cells and solar collectors are the main ways to directly utilize and absorb solar energy. Compared with solar cells, solar collectors have higher efficiency, much higher than other solar energy utilization methods. However, due to the limitations of structure and materials, the applicati...

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Problems solved by technology

[0005] However, in order to prevent the lower substrate 52 from being oxidized during the preparation process, the lower substrate 52 needs to be prepared in a relatively high vacuum insulation environment and heated to a relatively high temperature, and the production process is complicated.

Therefore, the cost in the preparation process of the lower substrate 52 is relatively high, thereby correspondingly making the cost of the solar panel heat collector 500 relatively high, which is not suitable for popularization and application in a large area.

In addition, the lower substrate 52 itself in the solar panel heat collector 500 is also used as a heat absorbing layer, so the material of the lower substrate 52 must be a heat absorbing material, and the conversion of solar energy by the lower substrate 52 made of an existing heat absorbing material less efficient

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