Fresnel thermal power generation overlapped heat collector

Abstract

The invention relates to a Fresnel thermal power generation overlapped heat collector, which comprises a heat collecting pipe, wherein the heat collecting pipe consists of a heat collecting pipe inner pipe and a heat collecting pipe outer pipe, the heat collecting pipe is in horizontal arrangement, the heat collecting pipe inner pipe is fixedly arranged on a heat collecting pipe support ring, theheat collecting pipe support ring and a top device support are in crossed connection, the top end of the top device support is connected with a small pipe support frame, the small pipe support frame is placed onto the heat collecting pipe, a light ray recovering small pipe parallel to the heat collecting pipe is arranged on the small pipe support frame, and the bottom end of the top device support is connected with a mirror frame framework. The Fresnel thermal power generation overlapped heat collector has the advantages that the light ray focusing difficulty is reduced, the performance of high absorption rate and low emission rate of the vacuum heat collecting pipe is sufficiently utilized, the light ray loss between the vacuum heat collecting pipe outer glass covers is also avoided, simultaneously, the solar light ray and heat utilization and conversion rate is improved, and the integral energy utilization efficiency of the solar energy is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of solar photothermal power generation, and in particular relates to an overlapping heat collecting device for Fresnel thermal power generation. Background technique [0002] my country's energy resource reserves are not optimistic, and per capita resources are not rich. The massive development and utilization of fossil energy has caused my country to emit CO 2 The most total. In many places, conventional energy resources are lacking, but solar energy resources are abundant. Solar thermal power generation has the advantages of relatively mature technology and small impact on the power grid, and is one of the most promising power generation methods in renewable energy power generation. Its thermal power conversion part is the same as that of conventional thermal power generating units, and mature technology is available, so it is especially suitable for large-scale use. [0003] Reflective focusing and zo...

AI Technical Summary

Problems solved by technology

Generally, it is difficult to focus it into a very narrow spot, which causes the loss of most of the reflected light. However, the parabolic compound surface CPC faces the problems of high processing precision, difficult molding, and difficult selection of materials.

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