Passive molten salt thermal absorber

Abstract

A passive fused salt heat absorber includes an endothermic pipe 1, a heat-resistant warming plate 2, a fused salt insulating layer 7, a lower collecting pipe 3, an upper collecting pipe 4; a fused salt tank 6 is arranged above the endothermic surface composed of a plurality of endothermic pipes 1. The endothermic surface faces to the heliostat field, the back of which is arranged with the heat-resistant warming plate 2. The outside of the fused salt tank 6 enwaraps the heat-resistant insulating layer 7, and the fused salt tank 6 and the heat-resistant insulating layer 7 enwrapped on the outside constitute a high temperature melt tank 12. The upper collecting pipe 4 is connected with the fused salt tank 6 through a rising pipe 5; the lower collecting pipe 3 is arranged at the lower part of the endothermic pipe 1, and the lower collecting pipe 3 is connected with fused salt tank 6 through a return pipe 9 to form a fused salt natural circulation loop. A endothermic surface can be used to match with a plurality of high temperature fused salt tanks 12, which forms the process of continuous heat absorption and heat charge and discharge.

Description

technical field [0001] The invention relates to a device of a solar tower thermal power generation system, in particular to a passive molten salt heat absorber. Background technique [0002] The solar tower thermal power station uses many heliostats to reflect and gather the direct solar radiation into the solar heat absorber placed on the heat absorption tower, and then transfers The radiant energy is converted into thermal energy output by the heat sink. The heat absorber is the core component of the tower thermal power generation system, and its annual safe working hours determine the annual working hours and annual power generation of the entire power station. Heat sinks can be flat or cylindrical. The heat-absorbing wall surface of the existing heat absorber is generally composed of tubes, and there is a heat-transfer fluid convective heat exchange inside. The surface of the tubes is covered with a film layer with high solar absorption rate. The tubes can be connect...

AI Technical Summary

Problems solved by technology

The above-mentioned patents are all inventions in the preparation of molten salt materials, the selection of metal materials for the heat absorbing body, and the enhanced heat transfer method of the heat absorbing tube, and the high temperature molten salt heat exchange cycle requires the use of molten salt pumps and consumes pumps. achievement

Images