SHIP BOIL-OFF GAS RELIQUEFACTION SYSTEM AND METHOD
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United States of America
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Jan 16, 2025
app pub date -
Dec 27, 2021
filing date -
Dec 27, 2021
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Abstract
Disclosed are a ship boil-off gas reliquefaction system and method. The boil-off gas reliquefaction system includes: a storage tank disposed in a ship and storing a liquefied gas; a compressor compressing boil-off gas generated from the liquefied gas; a reliquefaction apparatus reliquefying the compressed gas compressed in the compressor by cooling the compressed gas through heat exchange with a refrigerant circulating in a refrigerant circulation part; and a reliquefaction capacity controller controlling reliquefaction capacity of the reliquefaction apparatus, wherein, when a pressure value sensed at a vapor header through which the boil-off gas is discharged from the storage tank is lower than a preset low pressure value, the reliquefaction capacity controller reduces the reliquefaction capacity of the reliquefaction apparatus to maintain a pressure in the storage tank.
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