A kind of enhanced heat exchange alloy hydrogen storage tank
A technology to enhance heat exchange and hydrogen storage tanks, applied in indirect heat exchangers, fixed-capacity gas storage tanks, hydrogen technology, etc., can solve the problems of low heat exchange efficiency and large system occupation volume, and achieve enhanced heat exchange efficiency, Effect of improving hydrogen absorption and desorption performance
Active Publication Date: 2021-07-30
武汉氢能与燃料电池产业技术研究院有限公司
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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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Embodiment
[0027] This embodiment takes the hydrogen absorption and discharge of a titanium-iron alloy hydrogen storage tank as an example. The material of the U-shaped heat pipe 3a shell of the present invention is oxygen-free copper, the liquid-absorbing core is a powder sintered type, and the internal working medium is alcohol or acetone; the material of the tank body 1 is stainless steel, and the heat exchange medium flowing through the outer shell is Hot and cold water.
[0028] For the hydrogen filling process, hydrogen enters the gas guide structure 4 from the hydrogen inlet and outlet 10, and the gas enters the alloy powder bed 2 along the filter 4b and the air guide pipe 4a, and chemically reacts with the hydrogen storage alloy in the grid to form alloy powder , releasing a lot of heat. The heat is conducted to the evaporating section of the U-shaped heat pipe 3a through the copper fins of the grid fin 3b, and the working medium in the evaporating section of the heat pipe is ev...
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The invention discloses an external immersion-embedded enhanced heat exchange alloy hydrogen storage tank, which is mainly composed of four parts: a tank body, a heat exchange structure, an alloy powder bed body, and a gas guiding structure; the tank body is a double-layer shell structure , the inner shell is filled with an alloy powder bed, and a heat exchange structure is "embedded" in the bed; the outer shell is filled with a heat exchange medium, and the entire inner shell is "externally immersed" in the heat exchange medium , the heat exchange structure is welded by several U-shaped heat pipes arranged in a regular polygon and several grid fins, one section of the U-shaped heat pipe is welded with the grid fins and placed in the alloy powder bed, and the other section is inserted into the outer shell in the heat exchange medium. During the hydrogen absorption and discharge process of the alloy hydrogen storage tank, the heat is conducted through the U-shaped heat pipe, and can also be directly exchanged through the heat exchange medium between the inner shell and the outer shell. Through this external immersion-embedded enhanced heat transfer method, the heat transfer efficiency of the alloy powder bed is significantly enhanced, and the hydrogen absorption and desorption 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...
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IPC IPC(8): F17C11/00F17C13/00F28D15/02
CPCF17C11/005F17C13/00F28D15/0266F17C2221/012F17C2223/0123F17C2227/0397F17C2270/05Y02P90/45Y02E60/32
Inventor 程臣莫俊林王傲吴骁程冰冰
Owner 武汉氢能与燃料电池产业技术研究院有限公司