Two innovative fuel-gas supply systems (FGSS) will equip two new dual-fuel, 6,500 pure car carriers being built for Wallenius Marine.
The MAN Cryo FGSS sends boil-off gas to a ME-GI main engine vis BOG compressor minimising methane slip.
“This represents yet another world-first for MAN Cryo where the boil-off gas will be sent to the low methane-slip ME-GI via a high-pressure, boil-off-gas compressor,” said Henrik Malm, managing director at MAN Energy Solutions, Sweden and Finland.
”Due to the installed shaft generator, this further reduces the running hours on the auxiliary engines.”
The contract, signed with Yantai CIMC Raffles Shipyard for the delivery of the FGSSs, includes port and starboard-side bunkering stations, an LNG storage tank with a volume of 2,300 m3, tank connection space with low-pressure vaporizer, BOG heater and two LNG pumps.
It also includes high-pressure gas-handling equipment for delivery of gas to the MAN B&W ME-GI two-stroke main engine, boil-off gas (BOG) management system including one high-pressure compressor, on-board nitrogen-generation system, control system and gas-detection system.
The FGSSs for the vessels will be delivered during 2023.
MAN Cryo offers systems for the storage, distribution and handling of liquefied gases. It supplied the world’s first LNG fuel-gas system for the ‘Glutra’ ferry in Norway in 1999, a vessel that is still in operation to this day.
More recently, in 2013, MAN Cryo supplied the world’s first bunker vessel, the ‘SeaGas’, with operations in Stockholm, Sweden.