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New ammonia marine engine: Discover how Korean engineers designed an innovative marine engine that reduces CO₂ emissions by up to 50%

Written by Noel Budeguer
Published 13/06/2024 às 11:57
Engine - fuels - fuel - ammonia - ships - transport - naval
Ammonia as a marine fuel: Learn how ammonia is being used as a renewable energy source for marine engines, ensuring high thermal efficiency and significant CO₂ reduction

Ammonia as a marine fuel: Learn how ammonia is being used as a renewable energy source for marine engines, ensuring high thermal efficiency and significant CO₂ reduction

A combustion technology of MW-class marine engines that use ammonia, a future renewable energy source, as fuel, will be applied for the first time in Korea. An ammonia-fueled ship engine is expected to accelerate its competitiveness in the global market, which aims to develop an environmentally friendly marine engine.

A joint research team, led by principal investigator Cheol-Woong Park of the Korea Institute of Machinery and Materials (KIM), the Korean Registry, HD Hyundai Heavy Industries, HD Korea Shipbuilding & Offshore Engineering, the Korea Research Institute of Ship and Ocean Engineering (KRISO) and National Kunsan University, successfully demonstrated the technology using LNG- ammonia at the KR Testing and Certification Center (KR TCC).

The research team demonstrated the test by injecting ammonia at high pressure into the combustion chamber of a marine engine and maintained stable combustion with high power and thermal efficiency. Ammonia is a promising carbon-neutral fuel. However, it is a difficult material to handle as a fuel supply due to concerns such as corrosivity and toxicity. In addition, there are problems that result in decreased power and efficiency of the ammonia-fueled engine as it requires high ignition energy to ignite and incomplete combustion increases due to the smoldering speed.

The technology demonstration testing ammonia as a fuel was verified by changing the sealing ring material in the supply system in the MW class LNG-ammonia dual fuel engine. The material change prevented corrosion and external ammonia leakage and reduced carbon dioxide emissions by more than 50%.

Cheol-Woong Park, principal researcher at KIMM. Source: KIMM

The research team satisfied the requirement of ignition condition requiring high energy by optimizing ammonia fuel injection timing and combustion speed. Furthermore, the technology demonstration resolved both improving power output performance and reducing emissions at the same time by injecting high-pressure ammonia fuel directly into the combustion chamber and maximizing thermal efficiency through lean combustion mixing with air.

MW class ships, LNG-ammonia dual fuel engine combustion technology, is an exceptional technology that can satisfy greenhouse gas emissions regulations and ensure the forefront in the future of the shipbuilding industry. The technology can be applied to ship engines; It can also expand its application to various energy sources that need to reduce greenhouse gas emissions, such as automobiles and generators.

Cheol-Woong Park, KIMM Principal Researcher

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Noel Budeguer

Of Argentine nationality, I am a news writer and specialist in the field. I cover topics such as science, oil, gas, technology, the automotive industry, renewable energy and all trends in the job market.

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