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INDUSTRIAL | Manufacturing / Industrial Machinery & Equipment Distribution
ww.dearman.co.uk

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Founded Year

2011

Stage

Unattributed | Alive

Total Raised

$28.91M

Last Raised

$17.2M | 6 yrs ago

About Dearman Engine

Developer of clean cold and power technology. The company develops and manufactures liquid-air powered technology that harnesses liquid air to deliver zero-emission power and cooling. Its developing and demonstrating a portfolio of proprietary products that feature deduction in operation cost, fuel usage and emission, and low capital cost.

Dearman Engine Headquarter Location

7 Henrietta Street

London, WC2E 8PS,

United Kingdom

44 203 617 9170

Latest Dearman Engine News

Meet the British inventor who came up with a green way of generating electricity from air – in his shed

Jan 11, 2021

These days the inventor Peter Dearman works in his garage in Bishop’s Stortford (Photo: BBC) In 25 years of reporting on the environment , I’ve become unshakably convinced in the seriousness and urgency of tackling climate change , but also rather dismayed that our successes in reducing greenhouse gases and promising scientific breakthroughs go largely unreported. I’ve seen super plants that improve photo-synthesis, cows that belch less methane and next-gen solar panels. But there is one individual who deserves to be as famous in green-tech as Elon Musk for how his invention could help stop global warming. Green Shoots: i's Guide to Helping the Planet in your Everyday Life Email address is invalidEmail address is invalid Thank you for subscribing! Sorry, there was a problem with your subscription. His name is Peter Dearman and he lives in a semi-detached house in Bishops Stortford. Here, in his garage, he invented a motor that runs on air. Meeting Dearman for my new BBC Radio 4 series, 39 Ways To Save The Planet , he tells me: “It all started when I was a teenager in the 60s looking at cars and realised that petrol was going to run out, so I started looking for an alternative.” ‘Nobody is going to pay any attention to someone in a shed’ The “fuel” for the Dearman Engine is nitrogen, the gas that makes up 80 per cent of air. If it’s compressed into a liquid, opening a valve leads it to expand rapidly – by 700 times. This can drive a piston, just like exploding petrol vapour, but nothing is burned so no CO2 is emitted. It’s not powerful enough to drive a competitive car, but can generate electricity and more besides. “I sat on this idea for 20 to 30 years, not being able to do anything with it, because nobody is going to pay any attention to someone in a shed,” Dearman admits. “A ‘mad-man’ from Bishop’s Stortford isn’t always taken seriously”. But the market for low-carbon technology has changed that perception. The first use is replacing so-called transport refrigeration units, the diesel-powered engines which currently run nearly all the chillers on our refrigerated trucks. These engines don’t help the lorry move but can still demand 20 per cent of the fuel, are subject to much weaker air-quality regulations and can sit running outside shops for hours. The great thing about the Dearman Engine is that the expanding nitrogen is super cold, so both the engine and the exhaust help chill the big cold wagon. To take an even bigger bite out of climate change, we need to deploy these low-carbon chillers in poorer countries, where around one third of food is wasted because it rots between the farm and the shop due to a lack of refrigerated transport network. Prevent this with a climate-friendly technology like the Dearman Engine and the prize is huge: approaching 10 per cent of human-induced climate change comes from food being grown and wasted. The world’s first major liquid air-energy plant By now, smart readers will be asking where the energy comes from to compress the nitrogen in the first place. If that isn’t climate friendly then it’s a false carbon economy. Currently, nitrogen is a waste by-product of the much bigger liquid oxygen market, but if it takes off another low carbon source would be required: compression with renewable energy. But far from being a problem, this opens up another application. The Dearman Engine is behind Highview Power’s 250MWh energy storage facility being built in Manchester . It will use excess electricity from the grid – say on a windy night with the turbines spinning – to compress air in giant tanks. These will then act as energy storage “batteries” and when electricity demand peaks they can open the valve, drive a Dearman engine and produce electricity. Energy storage technologies are vital on a grid ever more reliant on the vagaries of the sun and the wind and there’s strong interest in this technology based on the Dearman Engine from elsewhere in the UK, North and South America. As we leave his garage, I ask Peter if he thinks his technology might help save the world and he replies with honesty yet somehow without hubris. “That genuinely was the plan, I could see as a teenager that this had huge potential.” He may soon be moving up from his Hertfordshire semi. ‘ 39 Ways To Save The Planet ’ airs Monday to Friday on BBC Radio 4 at 1.45pm and is on BBC Sounds

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