High-temperature solar cavity-type heat pipe center receiver

Abstract

The invention discloses a high-temperature solar cavity-type heat pipe center receiver. The high-temperature solar cavity-type heat pipe center receiver comprises high-temperature heat pipes. Each high-temperature heat pipe comprises two segments, wherein the upper segment is the heat release segment, and the lower segment is the heat absorption segment. The high-temperature heat pipes are placedinto a heat absorption chamber. The heat release segments are inserted into a fluid pipe. The fluid pipe is fixed to the upper part of the heat absorption chamber. A working fluid channel is formed bythe heat release segments and the fluid pipe. A daylight opening is formed in the outer wall of the heat absorption chamber. According to the high-temperature solar cavity-type heat pipe center receiver, the high-temperature heat pipes serve as heat transmission elements, the advantages of being good in thermal conductivity, good in isothermality and small in volume are achieved, the two ends ofeach heat pipe are sealed; and because each high-temperature heat pipe works in a relatively independent manner, even when a hot spot appears at some position because the density of received heat flowis too high, or even heat pipe leakage failure appears, no influence is caused to the work of the other heat pipes, the reliability of the receiver can be well kept, and then the receiver can run inhigh heat flux or heat flow for a long term.

Description

technical field [0001] The invention relates to a solar thermal power generation device, in particular to a high-temperature solar cavity-type heat pipe central receiver. Background technique [0002] Tower-type solar thermal power generation is a heliostat equipped with a tracking system to focus the sunlight on the receiver located on the top of the tower, and convert the concentrated solar radiation into heat energy and transfer it to the heat transfer medium (water, heat transfer oil, salt or air, etc. ), the heat transfer medium enters the heat exchanger to generate steam, which drives the steam wheel rail group to generate electricity. Tower-type solar thermal power generation technology is mostly used in large-scale solar power plants due to its advantages such as high concentration multiples, simple energy concentration process, and high heat conversion efficiency. [0003] The receiver is the core component of the photothermal conversion of the tower solar power ge...

AI Technical Summary

Problems solved by technology

However, the first-generation high-temperature heat pipe receiver is a single heat pipe type, and the whole receiver only includes a high-temperature heat pipe. Leakage, reliability issues with immediate failure of the entire receiver; second-generation high-temperature heat-pipe receivers have increased operational safety compared to first-generation heat-pipe receivers, but no significant gains in efficiency and performance

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