A BOG COOLING SYSTEM OF LNG TANK IN LNG CARRIER

摘要

PURPOSE: A BOG(Boil-Off Gas) cooling system for an LNG(Liquefied Natural Gas) tank in an LNG carrier is provided to cut down on cost and simplify the structure for cooling BOG in an LNG tank. CONSTITUTION: A BOG cooling system for an LNG tank in an LNG carrier comprises a compressor(110), a condenser(120), a storage tank(130), a supply pump(140), and a conduit. The compressor compresses a refrigerant. The condenser condenses the compacted refrigerant. The storage tank stores the condensed refrigerant. The supply pump supplies a refrigerant stored in the storage tank. Through the conduit, the refrigerant provided by the supply pump flows and passes through the inside of an LNG tank(300). The refrigerant flowing through the conduit into the LNG tank has a temperature lower than the liquefaction temperature of BOG.