Published by the Centre for Low Carbon Futures (CLCF), the report concludes that liquid air technologies could also significantly increase the efficiency of road vehicles, particularly in Britain’s fleets of buses, vans and refrigerated lorries.

The Dearman Engine is a piston engine that runs on liquid air, with a commercial demonstration engine is currently being built with Ricardo. Meanwhile, the Ricardo split-cycle engine is a highly efficient diesel design that uses liquid nitrogen to capture heat from its own exhaust. Liquid air technologies require no rare or expensive materials such as lithium or platinum.

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The report calculates that a vehicle food refrigeration system using liquid nitrogen or liquid air to provide both additional shaft power and cooling would cut emissions from 47 tonnes per truck per year (diesel refrigeration) to 10 tonnes, a reduction of almost 80% on the basis of current grid average electricity. The same approach could also provide refrigeration or air conditioning for passenger ferries, cruise ships, freight trains and buses, with greatest benefits in hot climates.

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According to a report by the Centre for Low Carbon Futures (CLCF), liquid air could reduce diesel consumption in buses or freight vehicles by 25 per cent using a liquid air Dearman engine/diesel hybrid.

The report says that in all but one scenario, per-kilometre costs for a car running on liquid air would be lower than for a petrol car with average UK fuel economy, and while electric vehicles such as the Nissan Leaf have lower running costs, the capital costs of a liquid air car would be around those of a car with an internal combustion engine, with the potential to be lower in the long-term, due to the fact that the engine can be produced from lighter materials.

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By choosing liquid air, Dearman believes he has created one of the most sustainable cars on the planet. His engine is very light, allowing manufacturers to build a car that could be made cheaply, and, perhaps, out of plastic – no metal required. And by not using any batteries, manufacturers can avoid using any scarce materials.

Soon, his homemade invention will be put inside a very professional package.The engineering company Ricardo, which helps design engines for, among others, McLaren race cars, is creating a state-of-the-art version this year.

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Cleantech Innovate Showcase: inspiring green innovations and technologies shaping our world. The event took place on 13 February, 2013 at the Institution of Mechanical Engineers. Over 80 applicants submitted their technologies and the finalists 40 British growth-oriented and venture-ready technology companies presented live at the largest innovation showcase of its kind in the UK. Jeremy North, Chairman of DEC gave a presentation of the Dearman Engine.

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Dreamt up by a British garage inventor, the nitrogen car could challenge electric and hydrogen vehicles and provide renewable energy storage.

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The Dearman Engine on Bloomberg West, a US TV show focused on technology, innovation and business hosted from San Francisco. A segment of Planet Forward, online series on energy, climate and sustainability based at the Center for Innovative Media at the George Washington University.

This webinar in the latest LowCVP Technology Bites series takes place on Wednesday, 7 November at 12:30pm BST. Featured this week are Dearman Engine Company Ltd and PI Innovo. The webinar is chaired by the LowCVP and participants will have the opportunity to participate in a Q&A session. Recordings of past webinars in this series are now available to view/listen again.

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Following the successful formula of Engine Expo Stuttgart for 14 years, North America’s dedicated international trade fair for automotive powertrain design, production, components and technology has been launched at the Suburban Collection Showplace in Detroit. Engine Expo Novi created perfect conditions for evaluating new components and products, meeting the industry and keeping up with the latest concepts and ideas.

Staged at the same time as Automotive Testing Expo, where many of the world’s leading engine test equipment companies were also exhibiting, The Dearman Engine Company presented its innovative liquid air engine technology at the UK Trade and Investment stand. On Day 1 of the conference programme, Jeremy North, Dearman Engine Company’s Chairman gave a presentation at the Open Technology Forum, on the Dearman Engine as a high yield thermal energy recovery system.

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A COUPLE of dozen electric cars with fuel cells under the bonnet (in place of the more usual flat-pack of batteries beneath the floor) have been zipping around your correspondent’s neighbourhood for the past few years. Most are FCX Clarity models from Honda, all in the same rich crimson colour. A couple of others are silver F-Cell station wagons made by Mercedes-Benz. These experimental vehicles are leased to selected users for trial periods while their manufacturers see how the hydrogen-fuelled cars survive the cut and thrust of Los Angeles’ traffic.

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Cars, homes and factories could be powered using the air we breathe in the future, according to engineers at a special summit. British scientists developing the technology say normal air can be used to store energy by cooling it to -190C, turning it into a liquid.

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Liquid air made a splash. Sadly it’s not often that an engineering story – unless it’s a nuclear reactor going into meltdown or an aircraft downed by a birdstrike – gets a lot of airtime in the mainstream media. But yesterday’s carefully co-ordinated effort by the IMechE, Highview Power Storage, a number of academics and the automotive engineering consultancy Ricardo to make the world sit up and pay attention to liquid air paid off.

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Turning air into liquid may offer a solution to one of the great challenges in engineering – how to store energy.
The Institution of Mechanical Engineers says liquid air can compete with batteries and hydrogen to store excess energy generated from renewables.

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