Clean cold technology firm Dearman is to double the size of its technology centre ahead of further trials of its ground-breaking engine powered by liquid nitrogen.

The Dearman Engine is zero emission, emitting no nitrogen oxide (NOx) or particulate matter (PM), and delivering significant carbon dioxide savings compared to diesel.

The first application of the technology is a zero-emission alternative to diesel powered transport refrigeration units (TRUs). The Dearman transport refrigeration system is currently undergoing advanced road trials with Sainsbury’s, and further international trials are set to begin later this year.

The planned expansion will more than double the size of the Dearman Technology Centre and will allow the company to assemble an increasing number of engines and refrigeration systems to support this expanded trial programme. In addition, it will enable the company to integrate its technology onto vehicles and conduct whole system testing on site.

The extended facility will also provide more space to house Dearman's advanced technology programme, which is developing further applications of the Dearman Engine for use in transport, logistics and the built environment.

Operations director Simon Mansfield said: “As UK engineering and technical expertise leads the Government's new Industrial Strategy, Dearman is at the forefront of innovative clean tech start-ups. Our technology can deliver operators cost savings but just as importantly it will have a huge impact on air pollution and climate change.

“There is already extensive interest in our technology from UK and international operators and this expansion will allow us to not only meet that demand but continue to innovate and deliver new high performance, zero emission products.'