Cycle analysis of micro gas turbine-molten carbonate fuel cell hybrid system

Shinji Kimijima, Nobuhide Kasagi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

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).

Original languageEnglish
Pages (from-to)65-74
Number of pages10
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Volume48
Issue number1
DOIs
Publication statusPublished - 2005 Feb

Fingerprint

molten carbonate fuel cells
Molten carbonate fuel cells (MCFC)
gas turbines
Hybrid systems
Gas turbines
combustion chambers
cycles
Combustors
Power generation
Recuperators
regenerators
effluents
Distributed power generation
Steam
turbines
solid oxide fuel cells
Solid oxide fuel cells (SOFC)
operating temperature
steam
Temperature

Keywords

  • Cycle analysis
  • Energy saving
  • Exergy
  • Fuel cell
  • Gas turbine
  • Hybrid system
  • Thermal efficiency

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

Cite this

Cycle analysis of micro gas turbine-molten carbonate fuel cell hybrid system. / Kimijima, Shinji; Kasagi, Nobuhide.

In: JSME International Journal, Series B: Fluids and Thermal Engineering, Vol. 48, No. 1, 02.2005, p. 65-74.

Research output: Contribution to journalArticle

@article{df6af7cf26864f7baf09d31bc772c925,
title = "Cycle analysis of micro gas turbine-molten carbonate fuel cell hybrid system",
abstract = "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).",
keywords = "Cycle analysis, Energy saving, Exergy, Fuel cell, Gas turbine, Hybrid system, Thermal efficiency",
author = "Shinji Kimijima and Nobuhide Kasagi",
year = "2005",
month = "2",
doi = "10.1299/jsmeb.48.65",
language = "English",
volume = "48",
pages = "65--74",
journal = "JSME International Journal, Series B: Fluids and Thermal Engineering",
issn = "0914-8817",
publisher = "Japan Society of Mechanical Engineers",
number = "1",

}

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

UR - http://www.scopus.com/inward/record.url?scp=17744392822&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17744392822&partnerID=8YFLogxK

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 B: Fluids and Thermal Engineering

JF - JSME International Journal, Series B: Fluids and Thermal Engineering

SN - 0914-8817

IS - 1

ER -