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http://dx.doi.org/10.3795/KSME-B.2011.35.4.361

Study on Effect of Increase in Inlet Temperature on Nafion Membrane Humidifier  

Hwang, Jun-Young (Korea Institute of Industrial Technology)
Chang, Hyo-Sun (Korea Institute of Industrial Technology)
Kang, Kyung-Tae (Korea Institute of Industrial Technology)
Kang, Heui-Seok (Korea Institute of Industrial Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.4, 2011 , pp. 361-369 More about this Journal
Abstract
The effect of an increase in the temperature of inlet air on the performance of a membrane humidifier for a PEMFC (Polymer Electrolyte Membrane Fuel Cell) vehicle was investigated both experimentally and numerically. A shell-and-tube type gas-to-gas humidifier with Nafion membrane was tested. The experimental result showed that water transfer varies nonlinearly with the temperature elevation. Numerical analysis based on detailed modeling was also conducted in simplified geometry of a single tube to explain this nonlinear behavior. The simulation revealed that the local water flux varies nonlinearly and dramatically along the tube. The analysis was based on the inverse relationship between the increase in temperature and decrease in relative humidity, both of which seriously affect the water conductivity of the membrane.
Keywords
Membrane Humidifier; PEMFC System; Nafion Tubes; Local Water Mass Flux;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
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