Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study on the Efficiency of Fuel Cells for Marine Generators

선박 발전기용 연료전지 시스템의 효율에 관한 연구

  • Lee, Jung-Hee (Dept. of Mechanical Engineering, Pukyong Nat'l UNIV.) ;
  • Kwak, Jae-Seob (Dept. of Mechanical Engineering, Pukyong Nat'l UNIV.) ;
  • Kim, Kwang-Heui (Dept. of Mechanical Design Engineering, Pukyong Nat'l UNIV.)
  • 이정희 (부경대학교 기계공학과) ;
  • 곽재섭 (부경대학교 기계공학과) ;
  • 김광희 (부경대학교 기계설계공학과)
  • Received : 2018.06.14
  • Accepted : 2018.06.25
  • Published : 2018.10.31
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Abstract

Most current ships have adopted on-board diesel generators to produce electricity, but the overall efficiency of equipment is down to about 50% due to thermal losses from operations such as exhaust gas, jacket water cooler, scavenge air cooler, etc. Recently, fuel cells have been highlighted as a promising technology to reduce the effect on the environment and have a higher efficiency. Therefore, this paper suggested a solid oxide fuel cell (SOFC)-gas turbine (GT) using waste heat from a SOFC and SOFC-GT-steam turbine (ST) with Rankine cycle. To compare both configurations, the fuel flow rate, current density, cell voltage, electrical power, and overall efficiency were evaluated at different operating loads. The overall efficiency of both SOFC hybrid systems was higher than the conventional system.

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References

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