システムダイナミクスを用いたLNG船基本計画の提案

概要

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The replacement of steam turbine to diesel engine after the oil crisis, has not taken place with regard to LNG carriers and still continuing using steam turbine. However, the alternative ship has appeared because of the shortage of an engineer of steam turbine, progress of technology or due to the environmental problem in recent years. So we tried to propose a decision-making system for building and operating LNG carriers by system dynamics. It turned out in a way that, compared to the Steam turbine system (S/T), Oil burning diesel engine with reliquefaction plant system (DRL) was cost advantageous assuming that the Boil-off gas price is equal to the LNG one.