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Unitized Regenerative Fuel Cell System Dryer-Humidifier Analytical Model DevelopmentA Unitized Regenerative Fuel Cell (URFC) Energy Storage System is being developed at the NASA Glenn Research Center. This URFC system is unique in that it uses regenerative gas dryers/humidifiers that are mounted on the surface of the gas storage tanks that act as the radiators for thermal control of the URFC system. As the gas storage tanks cool down during URFC charging the regenerative gas dryers/humidifiers dry the hydrogen and oxygen gases produced by electrolysis. As the gas storage tanks heat up during URFC discharging, the regenerative gas dryers/humidifiers humidify the hydrogen and oxygen gases used by fuel cell. An analytical model was developed to simulate the URFC system's regenerative gas dryers/humidifiers. The model is in the form of an EXCEL@ worksheet that allows the investigation of the regenerative gas dryers/humidifier performance as a function of time and position within the regenerative gas dryers/humidifiers, as well as other key system variables. Finite Element Analysis (FEA) modeling of the regenerative gas dryers/humidifier and gas storage tank wall was also done to analyze spatial temperature distribution within the regenerative gas dryers/humidifiers and the localized tank wall. Test results obtained from the testing of the regenerative gas dryers/humidifiers in a thermal vacuum environment were used to corroborate the analyses.
Document ID
20050203866
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Burke, Kenneth A.
(NASA Glenn Research Center Cleveland, OH, United States)
Jakupca, Ian
(Analex Corp. United States)
Date Acquired
September 8, 2013
Publication Date
December 12, 2003
Subject Category
Energy Production And Conversion
Meeting Information
Meeting: 2nd International Energy Conversion Engineering Conference
Location: Providence, RI
Country: United States
Start Date: August 16, 2004
End Date: August 19, 2004
Funding Number(s)
OTHER: 319-20-J1
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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