Simulating device for solar cavity type heat absorber

Abstract

The invention relates to the field of tower type solar heat power generation research, discloses a simulation device for a solar cavity type heat absorber, and is applicable to a simulation performance test of a cavity type heat absorber in the tower type solar heat power generation system. The simulation device comprises a drum and a hexagonal prism shaped heat absorbing cavity, wherein a side surface of the heat absorbing cavity is provided with a daylight opening; a dead backside wall, a left backside wall and a right backside wall of the heat absorbing cavity are arranged opposite to the daylight opening; a dead backside boiling tube, a left backside boiling tube and a right backside boiling tube are respectively arranged close to the dead backside wall, the left backside wall and theright backside wall; a superheat tube is arranged between the daylight opening and the dead backside wall; and the dead backside boiling tube, the left backside boiling tube, the right backside boiling tube and the superheat tube are respectively communicated with the drum. The simulation device is characterized in that the dead backside boiling tube, the left backside boiling tube, the right backside boiling tube and the superheat tube are made of stainless steel pipe coils which are directly heated by a power supply.

Description

A simulation device of a solar cavity heat absorber technical field The invention relates to the research field of tower-type solar thermal power generation, in particular to a simulation device of a solar cavity heat absorber, which is suitable for the simulation test of the performance of the cavity type heat absorber in a tower-type solar thermal power generation system. Background technique Solar thermal power generation technology uses an optical system to gather solar radiation energy to heat the working medium to generate steam, which drives a steam turbine generator set to generate electricity. According to different concentrating methods, solar thermal power generation can be divided into: tower solar thermal power generation, trough solar thermal power generation and dish solar thermal power generation. At present, trough solar thermal power generation has been commercialized, while tower solar thermal power generation and dish solar thermal power generation are ...

AI Technical Summary

Problems solved by technology

However, the solar heat flux inside the cavity heat absorber has two notable features: one is that the heat flux is very large, generally above 100kW / m2, and the highest place can reach 500kW / m2, or even higher. Neither heating nor electric furnace wire heating can provide such a large heat flux density; the second is that the distribution of solar light spots in the cavity heat absorber is uneven, which makes the heat flux distribution uneven, and the rear of the cavity heat absorber facing the daylighting port The heat flux density on the wall is relatively the largest, while the heat flux density on several surfaces around the daylight opening is relatively the smallest

Therefore, it is more difficult to simulate the cavity heat absorber

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