생애주기 분석을 통한 LNG운반선 추진시스템의 환경 영향 평가 연구 (Investigation on Environmental Impact of Marine LNG Propulsion Systems through a Life Cycle Assessment)

서지정보

· 발행기관 : 한국동력기계공학회
· 수록지 정보 : 동력시스템공학회지 / 24권 / 3호 / 75 ~ 81페이지
· 저자명 : 이재웅

초록

이 논문에서는 174K LNG운반선의 사례를 통해 현재 선박시장에서 각광을 받고 있는 3가지 LNG 추진 시스템 (울트라 스팀 터빈, 4 행정 중속 엔진 및 2 행정 저속 엔진 시스템)의 환경 영향성을 분석하여, 최적의 친환경 엔진을 선정하고자 하였으며 주요 결과는 다음과 같다. : 정규화 과정을 거쳐 금전적 가치로 환산한 결과 2행정 저속이중연료엔진시스템이 타 시스템 대비 친환경성 분야에서 상대적으로 높은 경쟁력을 확보한 것으로 판단되며 CO2 배출량 최소화에 가장 높은 기여를 할 수 있을 것으로 판단된다.

영어초록

Given that using LNG as a marine fuel has increasingly drawn more and more attraction from the marine industry, this paper was aimed to evaluate the optimal selection of three credible LNG engine systems by identifying environmental perspective; they are ultra steam turbine, four-stroke medium speed engine, and two-stroke low speed engine systems. To achieve this goal, this study has chosen one of the various novel techniques as life cycle assessment using software ‘Gabi.’ Research findings from a case study with a 174K LNG carrier have revealed that two-stroke low speed engine systems are the most effective overall, suggesting that this type of engine systems will hold a lead over the other candidates in the-not-too distance future. This paper has finally presented an underlying novelty of the proposed model that could extend our short-term view to the long-term one. Therefore, the impact of the proposed model was strongly believed to be extensive and remarkable to various studies which need proper decision-makings, not necessarily limited to the marine systems.

참고자료

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