Japan’s First High-Pressure Gas Supply System for Marine Engines by MHI
Mitsubishi Heavy Industry has announced the development of Japan’s first system for supplying high-pressure gas enabling use of natural gas as fuel for marine engines. The new high-pressure gas supply system delivers liquefied natural gas (LNG) at 30 megapascals (MPa) through liquid pumping, featuring a compact configuration with reduced power consumption. The liquid pump on this system adopts a hydraulic driver without speed reduction mechanism, facilitating variable speed adjustment and high flexibility of layout.
The system consists of mainly a unit to transfer LNG and high pressure according to fluctuations in engine, a hydraulic unit for its power source, unit to produce a compressed natural gas (CNG) through heating LNG to normal temperature, a CNG bottle unit to buffer the CNG pressure variation and gas combustion unit to safely dispose low pressure off-gas and to use its exhaust heat as heat source. The company is planning to deliver the first unit to MES (Mitsui engineering & Shipping) by early 2013.