한국항해항만학회지 (Journal of Navigation and Port Research)

  • 제48권2호
  • /
  • Pages.125-136
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  • 2024
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  • 1598-5725(pISSN)
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  • 2093-8470(eISSN)
한국항해항만학회 (Korean Institute of Navigation and Port Research)
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A Preliminary Study on Direct Ethanol SOFC for Marine Applications

  • Bo Rim Ryu (Department of Marine System Engineering, Korea Maritime and Ocean University) ;
  • To Thi Thu Ha (Department of Marine System Engineering, Korea Maritime and Ocean University) ;
  • Hokeun Kang (Division of Coast Guard Studies, Korea Maritime and Ocean University)
  • 투고 : 2023.11.02
  • 심사 : 2024.02.08
  • 발행 : 2024.04.30
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초록

This research presents an innovative integrated ethanol solid oxide fuel cell (SOFC) system designed for applications in marine vessels. The system incorporates an exhaust gas heat recovery mechanism. The high-temperature exhaust gas produced by the SOFC is efficiently recovered through a sequential process involving a gas turbine (GT), a regenerative system, steam Rankine cycles, and a waste heat boiler (WHB). A comprehensive thermodynamic analysis of this integrated SOFC-GT-SRC-WHB system was performed. A simulation of this proposed system was conducted using Aspen Hysys V12.1, and a genetic algorithm was employed to optimize the system parameters. Thermodynamic equations based on the first and second laws of thermodynamics were utilized to assess the system's performance. Additionally, the exergy destruction within the crucial system components was examined. The system is projected to achieve an energy efficiency of 58.44% and an exergy efficiency of 29.43%. Notably, the integrated high-temperature exhaust gas recovery systems contribute significantly, generating 1129.1 kW, which accounts for 22.9% of the total power generated. Furthermore, the waste heat boiler was designed to produce 900.8 kg/h of superheated vapor at 170 ℃ and 405 kP a, serving various onboard ship purposes, such as heating fuel oil and accommodations for seafarers and equipment.

키워드

과제정보

This research is the winner of the Marine Fisheries Future Risk Paper Contest sponsored by the Korea Maritime Institute(KMI). This research was supported by "Development and demonstration of ammonia fueled engine for medium/large sized vessels" funded by the Ministry of Trade, Industry and Energy(MOTIE, Korea) (RS-2023-00285272).

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