High temperature heat absorber used in solar tower-type thermal power station

Abstract

A high temperature heat sink used in the solar energy tower thermal generating station. It includes hot pipe, the heat-resisting insulating layer, the thermal baffle, the cooling channel and the second predocus mouth. The hot pipe is installed in the heat absorbing hollow and the lower of the cooling channel. The heat absorbing hollow faces to the lens field. Except the mouth, the other sides of the hollow are close which the out surface is covered with the heat-resisting insulating layer. The evaporation zone of the hot pipe is the heat absorbing face of the heat absorber and the cooling zone is inserted into the liner tube of the cooling channel. The evaporation zone is the free end and the out face is installed with the fin which is the straight fin faced to the incident energy flow. The hot pipe is arrayed crossly and working separately. The cooling channel is the heat exchanger of thick-wall square hollow made by the stainless steel which is installed on the top of the heat absorbing hollow and the rib pole is installed in the inner surface. It can select the hot pipes of different material according to the different outlet temperature. The invention is safe and simple to operate; also it has the wide using temperature and is easy to maintenance.

Description

technical field [0001] The invention relates to a high-temperature heat absorber for a solar tower thermal power station. Background technique [0002] In the occasions of solar concentrated high-temperature heat utilization and thermal power generation, the heat absorbers currently used mainly include water / steam, heat transfer oil, molten salt, air and liquid metal according to the working medium. The structure of the water / steam heat absorber is similar to the water wall, superheater and reheater in the current power plant boiler, where the supercooled water is heated to a saturated or superheated steam state. High-temperature components are in a state of high temperature and ultra-high pressure during operation, further improving the operating parameters requires high equipment safety, and the metal materials of the heat sink suffer from serious creep and high-temperature oxidation corrosion, which makes the heat sink run The further improvement of parameters and system...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome a series of deficiencies such as the poor thermal response ability and safety of the prior art, the complex control system and the large energy consumption of the working fluid circulation power equipment. Combining the advantages of heat pipe passive response, high-efficiency heat transfer, good temperature uniformity, and strong adaptability to non-uniform and unsteady temperature boundary conditions, a solar high-temperature heat absorber that can work in the temperature range of 300 ° C to 1200 ° C is proposed.

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