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http://dx.doi.org/10.7316/khnes.2011.22.5.609

Operation Results of a 5kW-Class SOFC System Composed of 2 Sub-Module Stacks  

Lee, Tae-Hee (Green Growth Technology Laboratory, KEPCO Research Institute)
Choi, Mi-Hwa (Green Growth Technology Laboratory, KEPCO Research Institute)
Yoo, Young-Sung (Green Growth Technology Laboratory, KEPCO Research Institute)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.22, no.5, 2011 , pp. 609-615 More about this Journal
Abstract
A 5 kW class SOFC system for cogeneration power units was consisted of a hot box part and cold BOPs. High temperature components such as a stack, a fuel reformer, a catalytic combustor, and heat exchanges are arranged in the bot box considering their operating temperatures for the system efficiency. The hot box was made of ceramic boards for the thermal insulation. A 5 kW class SOFC stack was composed of 2 sub-modules and each module had 64 cells with $15{\times}15cm^2$ area and stainless steel interconnects. The 5 kW class SOFC system was operated with a hydrogen and a city gas. With a hydrogen, the total power of the stacks was about 7.1 kWDC and electrical efficiency was about 49.3% at 80 A. With a city gas, the total power of the stacks was about 5.7 $kW_{DC}$ and electrical efficiency was about 38.8% at 60 A. Under self-sustained operating condition, the system efficiency including a power conditioning loss and a consumed power by BOPs was about 30.2%.
Keywords
Solid oxide fuel cell; Cogeneration system; Submodule stack; Fuel reformer; Balance of plant; Thermal management system;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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