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http://dx.doi.org/10.3795/KSME-B.2011.35.4.337

Study on PEM-Fuel-Cell Humidification System Consisting of Membrane Humidifier and Exhaust Air Recirculation Units  

Byun, Su-Young (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Kim, Beom-Jun (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Kim, Min-Soo (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.4, 2011 , pp. 337-344 More about this Journal
Abstract
The humidification of reactant gases is crucial for efficiently operating PEM (polymer electrolyte membrane) fuel cell systems and for improving the durability of these systems. The recycle of the energy and water vapor of exhaust gas improves the system performance especially in the case of automotive application. The available humidification methods are steam injection, nozzle spray, humidification by enthalpy wheel, membrane humidifier, etc. However, these methods do not satisfy certain requirements such as compact design, efficient operation and control. In this study, a hybrid humidification system consisting of a membrane humidifier and exhaust-air recirculation units was developed and the humidification performance of this hybrid humidifier was analyzed. Finally, a new practical method for optimal design of PEM-fuel-cell humidification system is proposed.
Keywords
Humidification; PEM Fuel Cell; Membrane Humidifier; Recirculation System;
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