Reduction of energy losses in zero emissions liquid air engines

University of Birmingham

Dearman Engines are a revolutionary type of zero-emission engine powered by the expansion of liquid nitrogen or liquid air. New to the market, retailers have started to use these in place of diesel engines on refrigerated trucks that are used to transport cold goods. With today’s energy production mix in the UK, Dearman estimates a carbon reduction of over 30% and NOx by 85% in refrigerated transport, equivalent to saving several tonnes of CO2 per vehicle every year. The engine could be used for any type of cooling, such as in datacentres, which accounts for 3% of the world’s power use.

Iestyn is researching different materials and shapes for Dearman Engines that could reduce the energy loss due to friction. This would in turn create a far more efficient engine. His work will involve the use of biopolymers and lubricants, moving away from fossil fuel based alternatives and creating a 100% green engine.

Iestyn graduated from the University of Birmingham with a MEng in July 2016. He began working with Dearman that summer, seeing the potential Dearman has to impact the way we generate power and cooling replacing internal combustion engines.

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