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Analysis of Energy Consumption of Novel Re-Liquefaction System Integrated with Fuel Supply System (FSS) for LPG-Fuelled LPG Carrier to Conventional Systemsopen accessLPG 연료 운반선의 전통적인 연료 공급 시스템(FSS) 및 재액화 시스템과 새로운 시스템의 에너지 소비 분석

Other Titles
LPG 연료 운반선의 전통적인 연료 공급 시스템(FSS) 및 재액화 시스템과 새로운 시스템의 에너지 소비 분석
Authors
Seo, Y.Kim, J.Park, E.Lee, J.Cho, M.Han, S.
Issue Date
12월-2022
Publisher
MDPI
Keywords
energy consumption; fuel supply system; gas carrier; LPG; re-liquefaction system
Citation
Energies, v.15, no.24
Journal Title
Energies
Volume
15
Number
24
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9735
DOI
10.3390/en15249384
ISSN
1996-1073
1996-1073
Abstract
This study analysed a novel re-liquefaction system integrated with a fuel supply system (FSS) for an LPG carrier to conventional systems. The re-liquefaction system and FSS were installed independently in a conventional LPG carrier, while those systems were combined in the novel system. The condensed LPG in the re-liquefaction system was directly transferred to the FSS without the cooling and expansion process in the novel system. 84,000 m3 LPG carrier equipped with a 10 MW engine at normal continuous rating (NCR) was selected as a target ship. Aspen HYSYS ver.12.1 was employed for process simulation. The results showed that the energy consumption for the novel system was reduced by 38%. The energy for re-liquefaction was decreased because the flow rate recirculated was decreased, and the energy for FSS was reduced as the temperature of the stream supplied to the FSS was relatively high in the novel system. A sensitivity analysis was conducted to investigate the effect of the parameters on the results. The investigated parameters were LPG compositions, seawater temperature, compressor efficiency, and pump efficiency. The energy consumption for the system was significantly different depending on the LPG composition, and the energy consumption was changed by 2.5% for conventional systems and 0.9% for the novel systems with the variation of 4 °C seawater temperature. The energy for the novel system was reduced by 2.8% for conventional systems and 2.3% for the novel systems with the 5% increment of compressor efficiency, whereas pump efficiency had little effect on the results. ? 2022 by the authors.
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Park, Eun Young
친환경해양개발연구본부 (해양플랜트산업지원센터)
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