| 중동항로 취항 멤브레인형 LNGC의 BOG 예측에 관한 연구 |
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장은규, 정연철 |
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| Prediction Method of the BOG for the Membrane Type LNGC in Middle East Route |
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Eun-Kyu Jang, Yun-Chul Jung |
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| Abstract |
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LNGC suffers a great heat inflow during navigation and this heat inflow inevitably boils off the LNG. The boiled off gas(BOG) is normally consumed as a fuel for ship’s engine. the boiled off LNG means a loss of cargo during transportation in the viewpoint of shipper. Therefore, a contract between shipper and ship operator is made for the limitation of BOR under 0.15% day based on laden voyage. This contract on BOR limit requires that ship’s officer has a correct knowledge on BOR for his ship. But in most cases ship is operated based on only officer’s heat exchange design technology about the heat distribution on the hull and heat inflow from outside through the hull. The BOG is calculated for ballast and laden voyage based on the actual weather conditions and verified by comparing with the measured BOG for the study ship. The study ship is a membrane type LNGC which is now servicing in Middle east route. Thus, the BOG prediction method which is presented in this study is expected to be used for an useful tool to manage the BOG in now servicing LNGC. |
| Key Words:
LNGC;BOR;BOG;Membrane;Ballast voyage;Laden voyage |
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