Method for improving CSP (concentrated solar power) absorption efficiency

A photothermal and high-efficiency technology, applied in the direction of condenser, optics, optical components, etc., can solve the problems of low heat absorption efficiency and power generation efficiency

Inactive Publication Date: 2011-09-28
冯益安
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Problems solved by technology

The cost of trough concentrating power generation is low, but the two parameters of heat absorption efficiency and power generatio...

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Embodiment Construction

[0006] In concentrating solar thermal technology, everyone praises the power generation efficiency of tower concentrating and butterfly concentrating, but the cost is relatively high. The cost of trough concentrating power generation is low, but the heat absorption efficiency and power generation efficiency are both low. In reality, people have not found an effective method that can achieve both low cost and high efficiency absorption.

[0007] In 2005, Nanjing tested tower-type concentrating power generation, using 32 mirrors to condense light, with a concentrating ratio of 32, which is relatively low. Therefore, in order to achieve the 900-degree temperature required in the design, it is necessary to make a fuss about the absorber. In fact, there are two ways to improve the concentrating temperature and heat absorption efficiency: 1. Increase absorber technology, such as coating technology, vacuum tube technology, and the straight-through vacuum tube technology that many man...

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Abstract

The invention discloses a method for improving CSP (concentrated solar power) absorption efficiency, and the method is designed for solving the problem that the current solar power concentration mode mainly comprises trough type, tower type, butterfly type, Fresnel point type and linear type focusing modes, wherein the thermal efficiency is higher when the tower type focusing mode and the butterfly type focusing mode are adopted, but some domestic test data proves that the thermal efficiency produced by using the tower type focusing is not always high, therefore, the concentration mode is not the key technique for improving the efficiency and reducing the comprehensive application cost. Another method (provided by the invention) for improving CSP absorption on the premise of adopting a same absorber in all existing CSP technique is to improve the concentration times. The concentration time of a trough or Fresnel linear lens is increased to be within a time range of between 600 and 2000, and the median value is 1000; and the concentration time of point focusing type concentrated lenses such as butterfly type and tower type lens and solar cookers is between 1000 and 2000, and can not be below 1000. By using the method disclosed by the invention, the concentration times which are improved within a certain limit are important basic parameters for realizing CSP absorption and basic conditions for realizing the low-cost development of CSP.

Description

[0001] Technical field: Concentrating light, heat and heat absorption Background technique: [0002] In concentrating solar thermal technology, everyone praises the power generation efficiency of tower concentrating and butterfly concentrating, but the cost is relatively high. The cost of trough concentrating power generation is low, but the heat absorption efficiency and power generation efficiency are both low. In reality, people have not found an effective method that can achieve both low cost and high efficiency absorption. Invention content: [0003] In concentrating solar thermal technology, everyone praises the power generation efficiency of tower concentrating and butterfly concentrating, but the cost is relatively high. The cost of trough concentrating power generation is low, but the heat absorption efficiency and power generation efficiency are both low. In reality, people have not found an effective method that can achieve both low cost and high efficiency absorp...

Claims

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Application Information

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IPC IPC(8): G02B19/00G02B3/08
Inventor 冯益安
Owner 冯益安
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