Tower solar middle temperature heat pipe type receiver

Abstract

The invention discloses a middle temperature heat pipe type receiver for tower solar thermal power generation. The receiver consists of a heat pipe (1), a light inlet hole (2) and a shell (3); a middle temperature fluid used as a circulating working medium is in the heat pipe; the light inlet hole is an interface for receiving solar energy; the shell is hexahedron-shaped and wholly adopts a frame beam structure; the heat pipe is divided into an evaporation section (1-1) and a condensation section (1-2), and a contact block is welded in the middle of the heat pipe; the evaporation section is arranged at the lower part and is positioned inside the shell; the condensation section is positioned at the upper part and is positioned outside the shell; a jacket pipe (4) is adopted outside the condensation section, inlet and outlet pipes are arranged at the top and the bottom of the jacket pipe and are connected with upper and lower headers (6) and (7) through interface flanges (10); high-temperature heat conductive oil used as a heat-transfer fluid is in the jacket pipe. Compared with a traditional tower receiver, the receiver has the benefits that the receiver adopts a heat pipe type, and can be used on the middle temperature section at 250-400 DEG C, the system reliability is ensured, and the efficiency is improved.

Description

technical field [0001] The invention relates to a comprehensive multi-stage utilization device of solar energy and biomass energy, which belongs to the technical field of new energy utilization. Background technique [0002] In the tower-type solar thermal power generation system, the solar receiver is the most critical core technology to realize the tower-type solar thermal power generation. The unit provides the required heat source or power source to realize the process of solar thermal power generation. In order to improve the energy conversion efficiency of receivers, various receivers have been extensively studied at home and abroad. Different types of receivers have different structural complexity and have their own advantages and disadvantages in engineering applications. [0003] In the traditional tower-type solar heat pipe receiver, the working medium in the heat pipe is usually water, mercury, etc. However, the steel-water heat pipe heat exchanger is usually us...

AI Technical Summary

Problems solved by technology

However, there are still some problems that cannot be ignored in the receiver of this structure, which have a certain impact on the work of the receiver

From a structural point of view, the solar radiation enters the cavity from the bottom of the receiver through the reflector, and the heat pipes are vertically distributed around the cavity, so that the light cannot be vertically incident on the heat pipes, resulting in uneven irradiance distribution on the heat pipes, which may cause The problem of uneven heating of the heat pipe

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