Hyundai Heavy Industries (HHI), the world’s biggest shipbuilder and a marine engine manufacturer, announced today that it has developed a new system to re-liquefying boil off gas (BOG) from a membrane-type LNG containment tank which can then be used as fuel for the vessel.
Unlike conventional systems which HHI says only partially re-liquefy BOG, their newly developed Gas Management System can re-liquefy 100 percent of the BOG and re-store it in the LNG tank for future use as fuel. The system is composed of an MAN ME-GI diesel engine, a BOG high-pressure compressor, a BOG re-liquefaction system, an LNG fuel gas supply system (FGSS) and Hyundai integrated gas supply system (Hi-GAS).
HHI says that two 176,000 m³ LNG carriers currently under construction for Knutsen will feature this new gas treatment system. The ships are scheduled to be delivered in 2016.