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R290 냉매를 이용한 수소 충전소 냉각시스템 엑서지 분석 및 공정 최적화

Exergy Analysis and Optimization of Chiller System in Hydrogen Fueling Station Using R290 Refrigerant

  • 현수빈 (동아대학교 조선해양플랜트공학과) ;
  • 최정호 (동아대학교 조선해양플랜트공학과)
  • HYEON, SOOBIN (Department of Naval Architecture and Offshore Engineering, Dong-A University) ;
  • CHOI, JUNGHO (Department of Naval Architecture and Offshore Engineering, Dong-A University)
  • 투고 : 2021.09.02
  • 심사 : 2021.10.11
  • 발행 : 2021.10.30

초록

During the hydrogen fueling process, hydrogen temperature inside the compressed tank were limited below 85℃ due to the allowable pressure of tank material. The chiller system to cool compressed hydrogen used R407C, greenhouse gas with a high global warming potential (GWP), as a refrigerant. To reduce greehouse gas emission, it should be replaced by refrigerant with a low GWP. This study proposes a chiller system for fueling hydrogen with R290, consisted in propane, by applying the C3 pre-cooled system use d in the LNG liquefaction process. The proposed system consisted of hydrogen compression and cooling sections and optimized the operating pressure through exergy analysis. It was also compared to the exergy efficiency with the existing system at the optimal operating pressure. The result showed that the optimal operating pressure is 700 kPa in 2-stage, 840 kPa/490 kPa in 3-stage, and the exergy efficiency increased by 17%.

키워드

과제정보

본 연구는 해양수산과학기술진흥원의 [수소추진 선박 벙커링 및 수소운반선박 적하역 안전기준 개발, 20200478]의 지원을 받아 수행한 연구입니다.

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