Sunday, 7 October 2012
Storing electrical energy in liquid air.
On the news this morning: from http://www.bbc.co.uk/news/science-environment-19785689
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. IMechE says "wrong-time" electricity generated by wind farms at night can be used to chill air to a cryogenic state at a distant location. When demand increases, the air can be warmed to drive a turbine.
Engineers say the process to produce "right-time" electricity can achieve an efficiency of up to 70%. IMechE is holding a conference today to discuss new ideas on how using "cryo-power" can benefit the low-carbon economy.
The technology was originally developed by Peter Dearman, a garage inventor in Hertfordshire, to power vehicles. A new firm, Highview Power Storage, was created to transfer Mr Dearman's technology to a system that can store energy to be used on the power grid. The process, part-funded by the government, has now been trialled for two years at the back of a power station in Slough, Buckinghamshire.
You can see a video of the engine at http://www.youtube.com/watch?v=NOImbv_xcT8
I've posted about this because this technology for storing electrical energy might also be applicable to electricity generated by Bessler's wheel.
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