Various supercritical carbon dioxide cycle layouts study for molten carbonate fuel cell application

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Various supercritical carbon dioxide (S-CO2) cycles for a power conversion system of a Molten Carbonate Fuel Cell (MCFC) hybrid system are studied in this paper. Re-Compressing Brayton (RCB) cycle, Simple Recuperated Brayton (SRB) cycle and Simple Recuperated Transcritical (SRT) cycle layouts were selected as candidates for this study. In addition, a novel concept of S-CO2 cycle which combines Brayton cycle and Rankine cycle is proposed and intensively studied with other S-CO2 layouts. A parametric study is performed to optimize the total system to be compact and to achieve wider operating range. Performances of each S-CO2 cycle are compared in terms of the thermal efficiency, net electricity of the MCFC hybrid system and approximate total volumes of each S-CO2 cycle. As a result, performance and total physical size of S-CO2 cycle can be better understood for MCFC S-CO2 hybrid system and especially, newly suggested S-CO2 cycle shows some success.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2014-12
Language
English
Article Type
Article
Keywords

ORGANIC RANKINE-CYCLE; WASTE HEAT-RECOVERY

Citation

JOURNAL OF POWER SOURCES, v.270, pp.608 - 618

ISSN
0378-7753
DOI
10.1016/j.jpowsour.2014.07.121
URI
http://hdl.handle.net/10203/190121
Appears in Collection
NE-Journal Papers(저널논문)
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