Tests successful for new hydrogen-powered one MW gensets

gensets

Successful tests have been conducted on Rolls-Royce‘s new 12-cylinder gas variant of the mtu Series 4000 L64 engine running on 100 per cent hydrogen fuel. The tests, carried out by the Power Systems business unit, is said to have showed that the latest gensets have very good characteristics in terms of efficiency, performance, emissions and combustion.

These tests mark another important step towards the commercial introduction of hydrogen solutions to meet the demand of data centre customers for more sustainable energy.

“This engine will serve the market demand for hydrogen solutions in the energy transition and will be available to our customers as a reliable and clean power source for gensets and combined heat and power plants,” said Tobias Ostermaier, president of stationary power solutions at Rolls-Royce Power Systems.

The first installation of mtu engines running on 100 per cent hydrogen is already planned for the enerPort II lighthouse project in the German inland port of Duisburg, as part of the development of a climate-neutral energy supply for a new container terminal.

“We see hydrogen as one of the central elements of the energy transition. It can be used for both storage of excess energy and as a fuel, not only for engines but fuel cells and cogeneration plants to generate climate-neutral electricity and heat,” commented Dr Jörg Stratmann, CEO of Rolls-Royce Power Systems.

In times of low demand and high renewable energy generation from wind or solar, for example, the excess energy can be channelled through an electrolyser to convert water to hydrogen, which can later be used as fuel in any number of applications.

For several months, the mtu gas engine has been undergoing bench testing and continuous improvement in terms of efficiency, performance, emissions and combustion using 100 per cent hydrogen as fuel. With green hydrogen, these mtu engines can be operated in a CO2-neutral manner in the future. For gas engines already installed, Rolls-Royce is offering a conversion solution.

Andrea Prospero, an engineer at Rolls-Royce responsible for the development of the hydrogen engine, said: “We are very pleased with the rapid progress. The very low engine emissions are well below the strict EU limits, no exhaust gas aftertreatment is required.”

Due to the different combustion behaviour of hydrogen compared to natural gas, some engine components including fuel injection, turbocharging, piston design and control, were modified in the test engine. However, by using proven technologies within the Power Systems’ portfolio, such as mtu turbochargers, injection valves, and engine electronics and control, the development of the engine to use hydrogen was advanced quickly and efficiently.

As part of its sustainability program, Rolls-Royce is realigning the product portfolio of Power Systems towards more sustainable fuels and new technologies that can further reduce greenhouse gas emissions.

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