ME-GI/GIE Pump Vaporiser Unit (PVU)

The ME-GI/GIE Pump Vaporiser Unit (PVU) is a standardized fuel gas supply unit that delivers LNG or ethane at the pressure and temperature required by Everllence B&W ME-GI and ME-GIE two-stroke dual-fuel engines. It integrates with the vessel's fuel gas supply system (FGSS) and the engine control system.

Working principle

• Cryogenic LNG/ethane is supplied to the PVU by a cryogenic centrifugal fuel pump
• A high-pressure reciprocating pump with three cylinders, actuated by linear hydraulic pistons, pressurizes the fuel
• The pressurized fuel is heated by warm glycol water in a compact printed circuit heat exchanger
• Gas then flows to the gas valve train (GVT) and the engine; delivery pressure is controlled by hydraulic flow control of the pump

Key features

• Three individually controlled cryogenic pump heads: the unit continues operating with only two cold-ends in service
• Longer time between overhaul (TBO) than conventional high-pressure pumps
• No high-pressure recirculation to the LNG tank, reducing boil-off gas
• Compact size and weight lowering installation costs
• Monitoring supported via PrimeServ Assist

Applications

Vessels with Everllence B&W ME-GI (LNG/methane) and ME-GIE (ethane) main engines, including LNG and ethane carriers.