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KC-1 Membrane LNG 탱크 단열시스템의 열해석에 관한 연구
정현원(Hyeon-won Jeong),김태현(Tae-hyun Kim),김석순(Seog-soon Kim),심재우(W.Jaewoo Shim) 한국해양공학회 2017 韓國海洋工學會誌 Vol.31 No.2
Recently, a new type of LNG membrane Tank called the “KC-1 membrane LNG Tank” was developed by KOGAS (Korean Gas Corporation). It is necessary to estimate the temperature distribution of the hull structure and insulation system for this new LNG tank, as well as the BOR (Boil-Off Rate) when exposed to outside temperature conditions to ensure the integrity of the tank structure and limit LNG evaporation, from a safety evaluation point of view. In this study, temperature distribution calculations for the hull structure and insulation system of the KC1 membrane tank were compared by employing four numerical approaches under the IGC condition. Approaches 1–3 studied 2D simulations and approach 4 used a 3D numerical simulation. Approach 1 was calculated by in-house Excel VBA codes and the three other approaches utilized ANSYS Fluent. The BOR of approach 4, the 3D simulation case, for the IGC condition was 0.0986%/day.