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

  • Hubbard-Dearman CV Show 3F140

Dearman to exhibit revolutionary zero-emission technology at CV Show

Dearman, the clean cold technology company, has announced that it will exhibit its revolutionary transport refrigeration system at the [...]

  • Chancellor Budget Red Diesel

Chancellor’s red diesel review “a step in the right direction” to improve air quality

The Dearman Engine Company has welcomed the Chancellor’s review of the use of red diesel to help improve Britain's [...]

  • MP and London transport chair visit Dearman site to meet staff

MP and London transport chair visit Dearman site to meet staff

The Dearman Engine Company received a visit from Tom Brake, Member of Parliament for Carshalton and Wallington, and Caroline Pidgeon, [...]

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