Measurements of the effects of thermal contact resistance on steady state heat transfer in phosphoric-acid fuel cell stackThe influence of the thermal contact resistance on the heat transfer between the electrode plates, and the cooling system plate in a phosphoric-acid fuel-cell stack was experimentally investigated. The investigation was conducted using a set-up that simulates the operating conditions prevailing in a phosphoric acid fuel-cell stack. The fuel-cell cooling system utilized three types of coolants, water, engine oil, and air, to remove excess heat generated in the cell electrode and to maintain a reasonably uniform temperature distribution in the electrode plate. The thermal contact resistance was measured as a function of pressure at the interface between the electrode plate and the cooling system plate. The interface pressure range was from 0 kPa to 3448 kPa, while the Reynolds number for the cooling limits varied from 15 to 79 for oil, 1165 to 6165 for water, and 700 to 6864 for air. Results showed that increasing the interface pressure resulted in a higher heat transfer coefficient.
Document ID
19920068114
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Abdul-Aziz, Ali (Sverdrup Technology, Inc.; NASA, Lewis Research Center Cleveland, OH, United States)
Alkasab, Kalil A. (Cleveland State University OH, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Fluid Mechanics And Heat Transfer
Meeting Information
Meeting: IECEC ''91: Intersociety Energy Conversion Engineering Conference