Japanese heavy machinery manufacturer Sumitomo Heavy Industries on Wednesday (5 August) said it has been granted an “Approval in Principle” (AiP) from Lloyd’s Register Group Limited for a medium-size tanker equipped with a high-pressure liquefied natural gas (LNG) dual-fuel system.
This tanker is equipped with an LNG dual-fuel system and large-capacity LNG tank and can substantially reduce the amount of sulfur oxide (SOx), nitrogen oxide (NOx) and carbon dioxide (CO2) found in the engine exhaust gas by using LNG as primary fuel, it said.
Sumitomo explained that LNG fueled engines present environmental challenges in that unburnt methane (a greenhouse gas) is emitted into the atmosphere from their exhaust gas.
However, the ME-GI type main engine designed by MAN Energy & Solutions that will be installed onboard the vessel will substantially reduce those emissions and also improve fuel efficiency.
High-pressure LNG that has been pressurized to approximately 300 bar will be supplied to this main engine through an LNG pump and vaporizer.
As global efforts are made to accelerate the reduction of greenhouse gas emissions in international shipping, demand for environmental-friendly ships will be growing, it noted.
Sumitomo’s state of the art tanker will far exceed the level of Phase 3 of the Energy Efficiency Design Index (EEDI), which will be mandatory to ships deployed in international trade.
Photo credit: Sumitomo Heavy Industries
Published: 7 August, 2020
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