HomeCalculatorsLNG BOG Reliquefaction - Duty

LNG BOG Reliquefaction - Duty

BOG reliquefaction plant duty for an LNG carrier with steam-free electric propulsion - sized for continuous laden BOR.

BOGReliquefactionLNG

Cargo volumem³BOR laden%/dayLNG densitykg/m³Reliquefy spec energykWh/kg LNG

Daily BOG mass

93,960kg/day

Reliquefaction duty

1,370kW

Formula, assumptions, and limits

Reverse Brayton or cascade cycle ~0.3–0.5 kWh per kg LNG. 174 000 m³ LNGC typical 5–8 MW reliquefaction plant. Alternative is BOG burn in DF main engines.

Symbol legend

Symbol	Meaning	Unit	Source
	Boil-off rate	%/day	tank insulation data
	Specific reliquefaction energy	kWh/kg LNG	plant maker data