A forced convection solar heat flux density homogenization device and method thereof

Abstract

A forced convection solar heat flux uniformization device and method thereof, the device includes a cavity heat absorber, the interior of the cavity heat absorber is filled with carbon dioxide-aluminum oxide, and the front wall of the cavity heat absorber is provided with a wall for collecting sunlight There is a fan at the center of the upper, lower, left and right walls in the cavity heat absorber. One side of the cavity heat absorber is connected with an inlet device and a pressure balance device. The side is connected with a sampling device and an outlet device; the present invention improves the non-uniformity of the cavity space temperature field of the cavity heat absorber by introducing carbon dioxide-aluminum oxide into the cavity heat absorber, and improves the distribution of solar heat flux density Uniformity, and at the same time cooperate with the forced convection generated by the fan installed in the cavity of the cavity heat absorber, which solves the existing problems of uneven sunlight heat flux height on the opening surface of the heat absorber, low heat transfer efficiency, and large heat loss. It has the advantages of reasonable structure, simple operation, low cost, practicality and high efficiency.

Description

technical field [0001] The invention belongs to the field of uniform utilization of solar heat flux, and in particular relates to a forced convection solar heat flux uniform device and a method thereof. Background technique [0002] At present, the utilization of solar energy is mainly to convert solar energy into other forms of energy, such as electricity. One of the ways that solar energy is used for power generation is solar thermal power generation. Solar thermal power generation mainly includes solar trough solar thermal power generation, solar butterfly solar thermal power generation and solar tower solar thermal power generation. As a centralized power generation system, the system has the advantages of large system capacity, high light concentration ratio and high system operating temperature, which is very commercially promising. [0003] A solar tower photothermal power generation system generally consists of a heliostat field, a tower, a heat absorber, a heat sto...

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Problems solved by technology

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a forced convection solar heat flux uniformization device and method thereof, which can improve the non-uniformity of the temperature field in the cavity space of the cavity heat absorber by means of forced convection Improve the uniformity of solar heat flux distribution, and at the same time, use the heat transfer medium injected into the cavity of the heat absorber to solve the unevenness of the sun heat flux on the open surface of the cavity heat absorber and the low heat transfer efficiency. , the problem of large heat loss, it has the advantages of reasonable structure, easy operation, low cost, practicality and high efficiency

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