TY - JOUR
T1 - Cycle analysis of micro gas turbine-molten carbonate fuel cell hybrid system
AU - Kimijima, Shinji
AU - Kasagi, Nobuhide
PY - 2005/2
Y1 - 2005/2
N2 - A hybrid system based on a micro gas turbine (μGT) and a high-temperature fuel cell, i.e., molten carbonate fuel cell (MCFC) or solid oxide fuel cell (SOFC), is expected to achieve a much higher efficiency than conventional distributed power generation systems. In this study, a cycle analysis method and the performance evaluation of a μGT-MCFC hybrid system, of which the power output is 30 kW, are investigated to clarify its feasibility. We developed a general design strategy in which a low fuel input to a combustor and higher MCFC operating temperature result in a high power generation efficiency. A high recuperator temperature effectiveness and a moderate steam-carbon ratio are the requirements for obtaining a high material strength in a turbine. In addition, by employing a combustor for complete oxidation of MCFC effluents without additional fuel input, i.e., a catalytic combustor, the power generation efficiency of a μGT-MCFC is achieved at over 60% (LHV).
AB - A hybrid system based on a micro gas turbine (μGT) and a high-temperature fuel cell, i.e., molten carbonate fuel cell (MCFC) or solid oxide fuel cell (SOFC), is expected to achieve a much higher efficiency than conventional distributed power generation systems. In this study, a cycle analysis method and the performance evaluation of a μGT-MCFC hybrid system, of which the power output is 30 kW, are investigated to clarify its feasibility. We developed a general design strategy in which a low fuel input to a combustor and higher MCFC operating temperature result in a high power generation efficiency. A high recuperator temperature effectiveness and a moderate steam-carbon ratio are the requirements for obtaining a high material strength in a turbine. In addition, by employing a combustor for complete oxidation of MCFC effluents without additional fuel input, i.e., a catalytic combustor, the power generation efficiency of a μGT-MCFC is achieved at over 60% (LHV).
KW - Cycle analysis
KW - Energy saving
KW - Exergy
KW - Fuel cell
KW - Gas turbine
KW - Hybrid system
KW - Thermal efficiency
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U2 - 10.1299/jsmeb.48.65
DO - 10.1299/jsmeb.48.65
M3 - Article
AN - SCOPUS:17744392822
VL - 48
SP - 65
EP - 74
JO - JSME International Journal, Series 2: Fluids Engineering, Heat Transfer, Power, Combustion, Thermophysical Properties
JF - JSME International Journal, Series 2: Fluids Engineering, Heat Transfer, Power, Combustion, Thermophysical Properties
SN - 0914-8817
IS - 1
ER -