UK-based ULEMCo plans to launch a hydrogen-fueled 50 kW (KVA) generator later this year. The zero emission genset is targeted for use in urban areas, where the impact of harmful emissions from non-road mobile machinery (NRMM) is increasingly being understood.
When running over an eight-hour construction shift, the 50 kW genset will use around 15-20 kg of hydrogen, depending on the average load. It will emit zero emissions from an air quality perspective, without any aftertreatment, and depending on the source of hydrogen, will save up to 640 g/kWh CO2 against a diesel-powered counterpart.
When tested under the Type D2 ISO 8178 generator set engine standard, it demonstrates class leading thermal efficiency from the engine of up to 45%.
The work builds on the results delivered recently by ULEMCo’s R&D partners, Revolve Technologies, on 100% hydrogen engines. Working in collaboration with a genset integrator, the two companies will provide a solution that applies their experience of hydrogen energy systems with capability in clean combustion approaches, and knowledge of practical customer operational needs. The companies note that alternatives such as batteries struggle to be practical options for the full range of off-grid and backup power generation requirements.
Our initial work showed how an engine can be adapted to run on 100% hydrogen with zero emissions, and we were delighted to see the impressive overall efficiency results attained. Using hydrogen in this genset application instead of other zero emission alternatives like batteries, eliminates equipment down time for re-charging, and requires very little change of behaviour for the operators that would normally use diesel fuel. We believe that our prototype will gain significant interest from the industry.—Paul Turner, Engineering Director at Revolve Technologies
ULEMCo plans to have a production ready genset available in the Autumn, and to have a prototype available for potential customers to trial in the next few months.