a solar receiver

Abstract

The invention relates to a solar receiver which comprises a medium input device, a medium output device and a plurality of pipelines. The pipelines are respectively communicated with the medium input device and the medium output device, inlet ends of the various pipelines are respectively communicated with the medium input device, outlet ends of the various pipelines are respectively communicated with the medium output device, the medium input device is a solar receiving end, and media are initially in liquid states. The solar receiver has the advantages that the working media at the bottom of the solar receiver are in the liquid states or are in gas and liquid mixed states, working media on the top of the solar receiver are in gaseous states, accordingly, problems of low specific heat capacity of gaseous media and high requirement on the loading capacity of an existing receiver are solved, and the problem that local overheating and no-load heat transmission occur easily when an existing solar receiver utilizing liquid media moves is also solved.

Description

technical field [0001] The invention relates to the field of new energy, and more specifically, relates to a solar receiver. Background technique [0002] Solar thermal power generation uses concentrating mirrors to gather solar light with low radiation density, heats the heat-carrying medium, and drives a gas turbine or Stirling machine to generate electricity. It has the characteristics of high conversion efficiency from solar energy to electrical energy, and is increasingly popular among people Pay attention to. [0003] The heat-carrying fluid passing through the dish solar receiver is generally divided into gaseous (air) and liquid (water, molten salt, etc.) media. The gaseous medium exchanges heat with the absorbing material (such as high-temperature ceramic foam, etc.) in the receiver. Take away the solar energy obtained after being concentrated by the dish reflector on the absorbing material. [0004] Due to the relatively small heat capacity of the gaseous medium,...

AI Technical Summary

Problems solved by technology

[0005] The liquid medium generally has a relatively large heat capacity, and can take away more heat after heat exchange by the receiver, but it needs to be considered that when the receiver is applied to a dish system, the receiver will affect the liquid interface in the receiver due to the change of the sun's trajectory. If the receiving surface cannot replenish the liquid medium in time, it will cause local overheating and no-load heat transmission, and even burn the receiver

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