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논문 기본 정보

자료유형
학술저널
저자정보
유화롱 (한국기계연구원) 김태훈 (한국기계연구원) 김창현 (한국기계연구원) 김민창 (한국기계연구원) 김명배 (한국기계연구원) 한용식 (한국기계연구원) 듀이 (한국기계연구원) 정경열 (한국기계연구원) 최병일 (한국기계연구원) 도규형 (한국기계연구원)
저널정보
대한조선학회 대한조선학회 논문집 대한조선학회논문집 제60권 제4호(통권 제250호)
발행연도
2023.8
수록면
222 - 230 (9page)
DOI
10.3744/SNAK.2023.60.4.222

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초록· 키워드

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In the present work, the scale effect on the Boil-Off Rate (BOR) was investigated based on an analytical method to systematically evaluate the thermal performance of a Liquefied Natural Gas (LNG) Cargo Containment System (CCS). A two-dimensional thermal resistance network model was developed to accurately estimate the heat ingress into the CCS from the outside. The analysis was performed for the KC-1 LNG membrane tank under the IGC and USCG design conditions. The ballast compartment of both the LNG tank and cofferdam was divided into six sections and a thermal resistance network model was made for each section. To check the validity of the developed model, the analysis results were compared with those from existing literature. It was shown that the BOR values under the IGC and USCG design conditions were agreed well with previous numerical results with a maximum error of 1.03% and 0.60%, respectively. A SDR, the scale factor of the LNG CCS was introduced and the BOR, air temperature of the ballast compartment, and the surface temperature of the inner hull were obtained to examine the influence of the SDR on the thermal performance. Finally, a correlation for the BOR was proposed, which could be expressed as a simple formula inversely proportional to the SDR. The proposed correlation could be utilized for predicting the BOR of a full-scale LNG tank based on the BOR measurement data of lab-scale model tanks.

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