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Design of Multi-stage Thermal cycle for Recovery of LNG Cold Energy and Waste Heat
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LNG 냉열과 폐열 회수를 위한 다단 열사이클 설계

논문 기본 정보

Type
Academic journal
Author
Yong-Seok CHOI (한국해양대학교) Tae-Woo LIM (한국해양대학교)
Journal
The Korean Society for Fisheries and Marine Sciences Education THE JOURNAL OF FISHERIES AND MARINE SCIENCES EDUCATION Vol.33 No.2(Wn.110) KCI Accredited Journals
Published
2021.4
Pages
483 - 491 (9page)
DOI
10.13000/JFMSE.2021.4.33.2.483

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Design of Multi-stage Thermal cycle for Recovery of LNG Cold Energy and Waste Heat
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Abstract· Keywords

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In this study, a multi-stage thermal cycle was designed to recover the LNG cold energy and the waste heat from the LNG fuelled ship. In the low temperature cycle, the LNG cold energy was used as the heat sink and the jacket cooling water of the main engine was used as the heat source. And in the high temperature cycle, the LNG cold energy and the exhaust gas were used as the heat sink and the heat sources, respectively. Seven types of working fluids were used for constituting the multi-stage thermal cycle. The multi-stage thermal cycle was analyzed by calculating the net power, thermal efficiency, exergy efficiency, and cold thermal efficiency. It was found that the R152a-hexane combination had the highest net power of 626.3kW, thermal efficiency of 20.5%, exergy efficiency of 29.1% and cold thermal efficiency of 23.3%.
#Cold energy #Efficiency #Exergy #LNG #Organic Rankine cycle

Contents

Abstract
Ⅰ. 서론
Ⅱ. 시스템 모델링
Ⅲ. 결과 및 고찰
Ⅳ. 결론
References

References (15)

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Attah EE / 2015 / An analysis of the energy efficiency of LNG ships powering options using the EEDI / Ocean Eng 110:62~74 Crossref 최용석 / 2018 / LNG 연료 추진선박의 LNG 냉열을 이용한 유기랭킨사이클의 성능 분석 / 한국마린엔지니어링학회지 42(7):524~530 dbpia Deng J / 2021 / A review of NOx and SOx emission reduction technologies for marinediesel engines and the potential evaluation of liquefied natural gas fuelled vessels / Sci. Total Environ 766:144319 Crossref Tianbiao He / 2019 / LNG cold energy utilization: Prospects and challenges / Energy 170(1):557~568 Crossref Tianbiao He / 2018 / A novel conceptual design of hydrate based desalination (HyDesal) process by utilizing LNG cold energy / Applied Energy 222(15):13~24 Crossref

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