A thermally self-sustaining miniature solid oxide fuel cell
MetadataShow full item record
A thermally self-sustaining miniature power generation device was developed utilizing a single-chamber solid oxide fuel cell (SOFC) placed in a controlled thermal environment provided by a spiral counterflow "Swiss roll" heat exchanger and combustor. With the single-chamber design, fuel/oxygen crossover due to cracking of seals via thermal cycling is irrelevant and coking on the anode is practically eliminated. Appropriate SOFC operating temperatures were maintained even at low Reynolds numbers (Re) via combustion of the fuel cell effluent at the center of the Swiss roll. Both propane and higher hydrocarbon fuels were examined. Extinction limits and thermal behavior of the integrated system were determined in equivalence ratio - Re parameter space and an optimal regime for SOFC operation were identified. SOFC power densities up to 420 mW/cm2 were observed at low Re. These results suggest that single-chamber SOFCs integrated with heat-recirculating combustors may be a viable approach for small-scale power generation devices. Copyright © 2009 by ASME.
Showing items related by title, author, creator and subject.
Ahn, J.; Shao, Zongping; Ronney, P.; Haile, S. (2008)A thermally self-sustaining miniature power generation device was developed utilizing a single-chamber solid oxide fuel cell (SOFC) placed in a controlled thermal environment provided by a spiral counterflow "Swiss roll" ...
Mixed fuel strategy for carbon deposition mitigation in solid oxide fuel cells at intermediate temperaturesSu, Chao; Chen, Y.; Wang, W.; Ran, Ran; Shao, Zongping; Diniz Da Costa, J.; Liu, Shaomin (2014)In this study, we propose and experimentally verified that methane and formic acid mixed fuel can be employed to sustain solid oxide fuel cells (SOFCs) to deliver high power outputs at intermediate temperatures and ...
Thermally and electrochemically induced electrode/electrolyte interfaces in solid oxide fuel cells: An AFM and EIS StudyJiang, San Ping (2015)In high temperature solid oxide fuel cells (SOFCs), electrode/electrolyte interfaces play a critical role in the electrocatalytic activity and durability of the cells. In this study, thermally and electrochemically induced ...