Heat transfer enhancement alloy hydrogen storage tank

Abstract

The invention discloses an outer immersion-embedding heat transfer enhancement alloy hydrogen storage tank. The tank is mainly composed of four parts including a tank body, a heat exchange structure,an alloy powder bed body and an air guide structure; the tank body is of a dual-layer shell structure, an inner-layer shell body is filled with the alloy powder bed body, and the heat exchange structure is embedded in the bed body; an outer-layer shell body is filled with a heat exchange medium, the whole inner-layer shell body is subjected to outer immersion into the heat exchange medium, and theheat exchange structure is formed by welding multiple U-shaped heat pipes arrayed in a regular polygon and multiple grid fins; one segment of each U-shaped heat pipe and the corresponding grid fin are welded into the alloy powder bed body, and the other segment of each U-shaped heat pipe is inserted into the heat exchange medium of the outer-layer shell body. When the alloy hydrogen storage tanksucks and releases hydrogen, heat is transmitted through the U-shaped heat pipes and can be directly exchanged through the heat exchange medium between the inner-layer shell body and the outer-layer shell body. Through an outer immersion-embedding heat transfer enhancement mode, the heat exchange efficiency of the alloy powder bed body is obviously improved, and the hydrogen suction and release performance of the alloy hydrogen storage tank is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of alloy hydrogen storage, in particular to an external immersion-internal enhanced heat exchange alloy hydrogen storage tank. Background technique [0002] Today, hydrogen energy is considered as an ideal energy source to solve problems such as resource depletion and environmental pressure. The storage and transportation of alloy powder has the advantages of mild hydrogen absorption and desorption conditions, low storage and transportation pressure, good safety performance, and high purity of hydrogen desorption, so it is considered to be an ideal hydrogen energy storage and transportation method. [0003] However, due to the poor thermal conductivity of the alloy powder itself, a large amount of heat is released during the hydrogen absorption process, causing the alloy powder bed temperature to rise sharply, and the hydrogen absorption process slows down or even stops; the hydrogen desorption process needs...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of low heat exchange efficiency and large volume of the system in the above-mentioned technology, the present invention provides an external immersion-internal enhanced heat exchange alloy hydrogen storage tank

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