Method for adjusting energy flow density of heat absorber in tower solar collector

Abstract

The invention relates to a method for adjusting the energy flux density of a heat absorber in a tower-type solar heat collection device, comprising: determining the heliostat for a certain heliostat in the solar heat collection device according to the focusing ratio of the heliostat In the target area of ​​a certain heliostat, determine the target position for the heliostat; every once in a while, re-execute the steps of determining the target position until the corresponding end command is received. According to the method of the present invention, the target points of all heliostats are randomly generated, and when the number of heliostats is large as time changes, the energy distribution is relatively uniform, and no human intervention is required; When the heliostat fails to participate in the concentration, it does not affect the energy flow distribution of the spot, and the energy flow distribution has nothing to do with the number of heliostats and the positions of these heliostats.

Description

technical field [0001] The invention relates to the field of solar concentrated light thermal power generation, in particular to a method for adjusting the energy flow density of a heat absorber in a tower-type solar heat collection device. Background technique [0002] The tower type solar heat collecting device at least includes: a heliostat field composed of multi-faceted heliostats and a heat absorber installed on a high tower. Its working principle is: through the heliostat, the sunlight is concentrated and reflected to the heat absorber to generate high temperature, and then the working medium is heated by the high temperature. After the working medium is heated, it can have a variety of follow-up applications, such as power generation, oil extraction, coal chemical industry, seawater desalination, etc. [0003] During the working process of the tower-type solar collector device, due to the different tracking accuracy of each heliostat, the position of the heliostat i...

AI Technical Summary

Problems solved by technology

[0005] Since the heliostat has a certain tracking error (usually about 3 milliradians), not all the sunlight reflected by the heliostat can accurately hit the designated area, so the energy flux density of the heat sink Usually the situation is uneven, and the heliostat whose target position is the high-temperature area may not be able to accurately hit the high-temperature area. At the same time, the heat absorber usually has a large heat capacity. Therefore, the above-mentioned light spot energy flow in the prior art The density adjustment method is difficult to achieve the desired effect

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