Novel fused salt heat absorber

Abstract

The invention discloses a novel fused salt heat absorber. The novel fused salt heat absorber comprises a distributing header, communicating pipes, heat absorbing pipes, an inlet header, an outlet header and a middle header. The distributing header is connected with the inlet header through the communicating pipes, and the inlet header and the outlet header are of an integrated structure and separated through a partition in the middle. The inlet header and the outlet header are connected through the heat absorbing pipes. The heat absorbing pipes comprise the upper row of heat absorbing pipes and the lower row of heat absorbing pipes. The upper row of heat absorbing pipes and the lower row of heat absorbing pipes are connected through the middle header. The novel fused salt heat absorber iscompact in structure and is close to a real object, the heat radiation absorption rate of the heat absorber for a solar simulative condenser matched in a laboratory is increased as much as possible, meanwhile, the feasibility of manufacturing and machining is considered, preventive measures are taken for the characteristic that fused salt is easily solidified, the situation that the fused salt isaccumulated in the heat absorber when the fused salt is in a cold state is avoided, enough temperature measuring instrument interfaces are reserved in the inlet header, the outlet header and the middle header, and therefore the condition is provided for following experiment fused salt temperature acquisition.

Description

technical field [0001] The invention relates to the technical field of solar thermal power generation, in particular to a novel molten salt heat absorber. Background technique [0002] High photothermal efficiency, friendly to the power grid, is an important direction for the development of solar power generation, mainly in four forms: tower type, dish type, trough type, and linear Fresnel type. Tower-type solar thermal power generation has a large scale, and the cost of power generation is expected to be further reduced, with great potential for development. Its heat absorber absorbs the concentrated solar heat and converts it into heat energy of the working fluid (molten salt, water or air, etc.), and is one of the core components of the power station system. Among various heat transfer working fluids, the heat absorber using molten salt as the working fluid has a higher heat collection temperature and lower operating pressure, and is currently the most widely used in tow...

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Problems solved by technology

[0003] The existing tower-type solar thermal power plants are mainly distributed in the northwest of my country. Affected by external natural conditions, the working temperature of the heat absorber varies greatly. The existing molten salt heat absorbers lack the temperature drop characteristics of the heat absorber in different environments. Analysis and how to take optimal protective structure research

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