Loading...
Dearman Technologies 2018-03-22T12:17:09+00:00

Dearman Applications

Liquid nitrogen (or liquid air) is kept at -196℃  – 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 –

0
Kept at -196℃
0
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.

Liquid air – a novel energy vector storing cold and power

When people talk about energy storage they usually mean electro-chemical batteries. But when the service required is cooling, and especially when ambient temperatures are high, it is often more effective to store energy as cold. Liquid air is a powerful new energy vector to provide distributed clean cold and power in vehicles and buildings.

Liquid air is not yet produced commercially, but liquid nitrogen, which can be used in the same way, is produced throughout the industrialised economies. Historically nitrogen has been used simply as an industrial gas, but now it is being re-purposed as a means of converting renewable and off-peak energy into storable, transportable cold and power.

Liquid air or nitrogen can be kept safely in insulated but unpressurised tanks, and when exposed to heat will instantly re-gasify and expand 700-fold in volume. When channelled through a Dearman engine, this process generates both cooling and mechanical power for a wide range of applications.

Because liquid air is simply air that has been cooled to -196°C, it also provides a convenient and effective way to capture and recycle the huge amounts of cold energy that are typically wasted during the re-gasification of LNG at import terminals.

Harnessing liquid air

Dearman Technology Applications

Transport Refrigeration

Built Environment

Auxiliary Power Unit

Heat Hybrid

Latest Dearman News

  • Dearman welcomes Clean Air Strategy action on diesel machinery

Dearman welcomes Clean Air Strategy action on diesel machinery

Clean tech experts Dearman have welcomed the government’s draft Clean Air Strategy launched today and the tougher action planned for [...]

  • Reflections from North America’s biggest clean transport event

Reflections from North America’s biggest clean transport event

Earlier this month, Dearman took a major step in making our debut in the Americas. Our first appearance in the [...]

  • Dearman backs minister’s call to “level the playing field” over red diesel use

Dearman backs minister’s call to “level the playing field” over red diesel use

Zero emission tech experts Dearman have backed Treasury minister Robert Jenrick, who has today called to “level the playing field” [...]

Download the Dearman company brochure

Download now