The Control of Humidification and Dew Condensation by Using of On/Off Control of the Bubble Humidifier in the PEMFC

Abstract:

The performance of Proton Exchange Membrane Fuel Cell (PEMFC) is known to be influenced by different operating conditions such as temperature, pressure, and humidification of the reactant gases. Especially, the humidification is essential for the electrolysis and performance enhancement of PEMFC, because the proton conductivity depends on the hydration of proton exchange membrane. In this study, the humidification experiment has been done concerning ON/OFF control of the humidification for PEMFC, by using of the bubble humidifiers which are usually difficult to approximation control the humidity. Also, in order to verify the dew condensation, the visualization experiment has been done at a flow channel of PEMFC stack. As the results, it is possible to approximation control the humidity by using of the solenoid on/off valve in the bubble humidifier. The dew condensation is also verified through such experiment. The problems, such as the approximation control of humidity and dew condensation, were then resolved in such a useful manner.

• Periodical: Applied Mechanics and Materials (Volumes 155-156)
• Pages: 856-860
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.155-156.856
• Online since: February 2012
• Authors: Young Guan Jung, Ho Sang Choi, Du Hee Kim, Dae Heum Park
• Keywords: Bubble Humidifier, Dew Condensation, Humidification, Humidity, On/Off Control, PEMFC

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