Abstract
The Alberta Research Council Inc. (ARC) is developing a tubular micro solid oxide fuel cell (μSOPC). Small diameter SOFC has two main potential advantages, substantial increase in the electrolyte surface area per unit volume of a stack and also quick start up. Since fuel cell power is directly proportional to the electrolyte surface area, a μSOFC stack has high potential to substantially increase the power per unit volume. Simple calculation shows a decrease of tube diameter from 22 mm to 2 mm will increase the electrolyte surface area in a stack approximately eight times. Due to its thin wall, a μSOFC has extremely high thermal shock resistance and low thermal mass. These low thermal mass and high thermal shock resistance characteristics are fundamental to reducing start up and turn off time for the SOFC system.
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