Solar heat absorber with low surface temperature deviation

Abstract

The invention provides a solar heat absorber with low surface temperature deviation. The solar heat absorber comprises a heat absorber body, a heat-absorbing material core body is arranged in the heat absorber body, a quartz glass window is arranged on one side of the heat absorber body and is used for projecting solar rays onto the heat-absorbing material core body, and a working medium outlet is formed in the other side of the heat absorber body. A working medium inlet is formed in the side, close to the quartz glass window, of the heat absorber body, and heat conduction fluid enters the heat absorber body from the working medium inlet, and flows through the heat absorption material core body to absorb heat after the fluid passes through adjustable baffles and flow guide plates. By means of the adjustable baffles and the flow guide plates, it is guaranteed that the center area has the higher heat conduction fluid flow, meanwhile, the edge area has the enough heat conduction fluid flow, the uniformity of the surface temperature of the heat absorption material is guaranteed, and the incident radiation bearing capacity and the overall heat absorption efficiency of the heat absorber are improved from the flowing aspect. And the stability and the economical efficiency of the system are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of solar heat utilization, and in particular relates to a solar heat absorber with low surface temperature deviation. Background technique [0002] A solar thermal power generation system generally consists of a heat collection system, a heat transfer and storage system, a heat exchange system, and a power generation system. During operation, the sunlight is focused on the heat absorber through the condenser mirror field, and the heat absorber heats the working fluid to a high temperature, and then generates high-temperature and high-pressure steam or supercritical carbon dioxide through heat exchange, and finally drives steam turbines and other equipment to generate electricity. In addition, since the solar thermal power generation system is often equipped with a heat storage system, the excess heat energy can be stored when the sunlight is sufficient, and the heat in the heat storage system can be used to ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of local high temperature damage in the heat absorption process of the solar heat absorber, the purpose of the present invention is to provide a solar heat absorber with low surface temperature deviation, which improves the uniformity of the surface temperature by reducing the surface temperature deviation of the heat absorber, and then Reduce the occurrence of local overheating of the heat sink

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