Dearman Technologies

Liquid nitrogen (or liquid air) is kept at minus 196C – warm it even a few degrees and it becomes a gas, expanding 710 times in volume. The pressure from this expansion can drive a piston and deliver not only power, but also cooling. It only exhausts clean air back to the atmosphere.

This process is at the core of the technologies Dearman is developing, which can be applied in a range of applications –

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Kept at minus -196C
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Expands 710 times

In each of these applications, Dearman technologies deliver:

  • savings on fuel and operating costs
  • immediate improvements in local air quality
  • quick pay-back (a few months to a year)

Dearman has further products in the pipeline, which have mainstream markets in multiple geographies, and can make a robust business case without subsidy or policy change or legislation.

Latest Dearman News

  • Dearman Technology Centre

Croydon-based clean tech company set to double size of research and development centre

Dearman, the clean cold technology company, has announced today that it will double the size of its technology centre ahead [...]

  • Dearman Engine - Test Cell

MPs urge action on diesel-powered refrigeration units

In a House of Commons debate secured by Andrew Selous MP, Members of Parliament have encouraged ministers to take further [...]

  • Dearman Engine TRU

Dearman wins National Air Quality Award

Dearman, the clean cold technology company, has been awarded a National Air Quality Award. Dearman’s zero-emission transport refrigeration system, which [...]

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