Novel flat plate type heat absorber for solar tower type power generation and system using novel flat plate type heat absorber

Abstract

The invention discloses a novel flat plate type heat absorber for solar tower type power generation and a system using the novel flat plate type heat absorber. The system comprises a windshield, a flat plate type heat absorber and a circulation pipeline, wherein the flat plate type heat absorber is a main element for photo-thermal conversion and heat energy transmission, the windshield avoids heat loss of the heat absorber, and the circulation pipeline guarantees circulation of a working fluid. In the working process, a heat transfer fluid in the flat plate type heat absorber absorbs heat and evaporates from the evaporation face and releases heat and condenses on the condensation face, the condensed heat transfer fluid flows back to the evaporation face to enter the next cycle of work, and heat is transferred to the working fluid through the gas-liquid phase change process. According to the flat plate type heat absorber, through arrangement of the grids and innovation of the structure, the height of the heat absorber is reduced by more than half compared with a traditional heat pipe type heat absorber, the windward area is reduced, the gravity center is lowered, and the stability of the flat plate type heat absorber is improved. Meanwhile, a heat pipe principle indirect heat transfer mode is adopted, so that the flat plate type heat absorber can resist high heat flow density and heat shock, and the service life is prolonged.

Description

technical field [0001] The invention relates to a flat-plate heat absorber suitable for solar tower power generation and a system using the same, belonging to the technical field of high-temperature heat utilization of solar energy. Background technique [0002] In the 21st century, with the depletion of fossil fuels and the increasingly serious environmental pollution, energy issues have become the bottleneck restricting the rapid development of my country's economy. As a renewable energy with huge energy storage, clean and environmentally friendly, and widely distributed, solar energy is becoming a hot spot in the field of energy research, development and utilization. Among them, the tower type solar thermal power generation system has the advantages of high concentration multiple, high light-to-heat conversion efficiency and low power generation cost, and has been developed rapidly; however, the heat absorber of the tower type solar thermal power generation Working under...

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Problems solved by technology

[0004] The object of the present invention is to provide a new flat-plate heat absorber for solar tower power generation. There is a problem that the service life of the heat absorber is too short due to local overheating and thermal fatigue under the thermal load of unsteady state, unevenness and high energy flux density

At the same time, the flat-plate heat absorber has a lower center of gravity and volume under the same heat absorption area, which can solve the problems of the existing heat pipe heat absorber with too high height, center of gravity and too large volume

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