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Tube type heat exchanger and application of tube type heat exchanger in direct alcohol fuel cell system

A tubular heat exchanger and heat exchanger technology, which can be applied to fuel cell parts, fuel cells, heat exchanger types, etc. The problem of low efficiency

Inactive Publication Date: 2011-01-12
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0009] In general, the heat exchangers currently used for the water-heat balance of fuel cell systems are not efficient, large in size, and difficult to integrate with auxiliary cooling components. These problems are still one of the main obstacles hindering the application of direct alcohol fuel cell systems. one

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  • Tube type heat exchanger and application of tube type heat exchanger in direct alcohol fuel cell system
  • Tube type heat exchanger and application of tube type heat exchanger in direct alcohol fuel cell system
  • Tube type heat exchanger and application of tube type heat exchanger in direct alcohol fuel cell system

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Embodiment Construction

[0027] Traditional tubular heat exchangers are generally composed of heat exchange tubes, enhanced heat exchange elements and auxiliary heat exchange devices. The enhanced heat exchange elements include aluminum foil and fins outside the heat exchange tubes, threaded structures inside the heat exchange tubes, and spoiler cores. Sub, etc., the role is to enhance heat transfer.

[0028] The heat exchanger of the present invention is mainly used in a fuel cell system to achieve the purpose of improving the water-heat balance of the system. This is achieved by removing excess heat from the system, condensing water vapor in the cathode effluent into liquid water and recycling it. Under normal circumstances, the amount of water in the cathode discharge is not very large. If the heat exchange in the heat exchange tube is enhanced, the flow of liquid water may not be smooth. Therefore, increasing the heat exchange area outside the heat exchange tube is one of the ways to solve the abo...

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Abstract

The invention relates to a tube type heat exchanger, in particular to the tube type heat exchanger and application of the tube type heat exchanger in a direct alcohol fuel cell system. In the invention, foam metal is used as a heat exchanging sheet outside the tube of the heat exchanger and connected with a corrosion resistance tube through welding, sticking, swelling connection and other connection manners, air is used to condensate water vapor discharged by a fuel cell, and the liquid level or the air humidity in a solution mixing cavity is used to control the on / off of a cooling fan, thereby achieving the water-heat balance of the direct alcohol fuel cell system. Compared with the prior art, the method is beneficial to maintain the water-heat balance of the fuel cell system under the variable ambient humidity conditions; and the heat exchanger has high heat exchange efficiency, small volume and light weight, is beneficial to improve the integrated level of a system, is suitable for emergency supply, electronics supply and power source which demand high energy.

Description

technical field [0001] The present invention relates to tubular heat exchangers, in particular tubular heat exchangers and their use in direct alcohol fuel cell systems, mainly for condensing water vapor in the effluent of direct alcohol fuel cell systems, Recover and recycle the condensed liquid water, discharge the excess heat of the system, and maintain the water-heat balance of the system. Background technique [0002] A direct alcohol fuel cell is a chemical reaction device that directly converts the chemical energy in alcohol fuel into electrical energy. Due to the advantages of high specific energy of alcohol fuel and simple structure of fuel cell system, this type of battery has broad application prospects in the field of portable mobile power supply. [0003] During the operation of the direct alcohol fuel cell system, on the one hand, due to the large amount of heat generated by the electrode reaction, it is necessary to perform heat removal treatment on the syste...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D1/04F28F19/06F28F21/08F28F1/30H01M8/02H01M8/04H01M8/0267H01M8/04007
CPCY02E60/50Y02B90/10
Inventor 孙公权孙海陈利康赵钢
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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