Novo motor marinho de amônia: Descubra como engenheiros coreanos projetaram um motor marinho inovador que reduz as emissões de CO₂ em até 50%

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 on 13/06/2024 at 11:57

Amônia como combustível naval: Saiba como a amônia está sendo utilizada como uma fonte de energia renovável para motores marinhos, garantindo alta eficiência térmica e redução significativa de CO₂

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Ammonia as Marine Fuel: Learn How Ammonia Is Being Used as a Renewable Energy Source for Marine Engines, Ensuring High Thermal Efficiency and Significant CO₂ Reduction

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

A joint research team, led by principal researcher Cheol-Woong Park from the Korea Institute of Machinery and Materials (KIMM), the Korean Register, HD Hyundai Heavy Industries, HD Korea Shipbuilding & Offshore Engineering, the Korean Research Institute of Ships and Ocean Engineering (KRISO), and Kunsan National University, successfully demonstrated the technology using dual-fuel LNG-ammonia engines 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 challenging material to handle as a fuel supply due to concerns like corrosiveness and toxicity. Additionally, there are issues that result in reduced power and efficiency in ammonia-powered engines, as it requires high ignition energy to ignite and incomplete combustion increases due to slow combustion speed.

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The demonstration of the technology testing ammonia as fuel was verified by changing the sealing ring material in the fuel supply system of 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 met the requirement for the ignition condition that requires high energy by optimizing the ammonia fuel injection timing and combustion speed. Furthermore, the technology demonstration simultaneously resolved both performance output enhancement and emission reduction by injecting ammonia fuel at high pressure directly into the combustion chamber and maximizing thermal efficiency through poor combustion mixing with air.

MW-class ships utilizing dual fuel LNG-ammonia engine combustion technology represent an exceptional technology that can meet greenhouse gas emission regulations and ensure leadership 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 cars and generators.

Cheol-Woong Park, Principal Researcher at KIMM

New Ammonia Marine Engine: Discover How Korean Engineers Designed an Innovative Marine Engine That Reduces CO₂ Emissions by Up to 50%

Ammonia as Marine Fuel: Learn How Ammonia Is Being Used as a Renewable Energy Source for Marine Engines, Ensuring High Thermal Efficiency and Significant CO₂ Reduction

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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%

Ammonia as Marine Fuel: Learn How Ammonia Is Being Used as a Renewable Energy Source for Marine Engines, Ensuring High Thermal Efficiency and Significant CO₂ Reduction

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Elon Musk’s internet comes to mobile: Starlink technology connects smartphones without an antenna via satellite, works even without carrier signal, already costs just US$10 extra in the US, and could arrive in Brazil as an included benefit.

While Brazil has been discussing bullet trains for 16 years, China delivers 5 new high-speed lines in 2026, surpasses 50,000 km of HSR, and moves 1 billion passengers in a single year.

With a wingspan of 152 meters, 76 tires, and a capacity to carry 1,270 tons, the Boeing Pelican was the giant “flying ship” that promised to cross oceans close to the water on an invisible air cushion beneath its wings.

A Chinese factory in Guangdong is assembling a humanoid robot every 30 minutes while Tesla, Figure, and Boston Dynamics still struggle to deliver 10 thousand per year.

While countries spend billions to draw water from the sea, a Nobel-winning scientist creates a container-sized machine that extracts up to 1,000 liters per day from dry air and uses ultrasound to release water in minutes, even in the middle of the desert.

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