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News Link • Energy

Liquefied Air Could Power Cars and Store Energy from Sun and Wind


Some engineers are dusting off an old idea for storing energy—using electricity to liquefy air by cooling it down to nearly 200 °C below zero. When power is needed, the liquefied air is allowed to warm up and expand to drive a steam turbine and generator.

The concept is being evaluated by a handful of companies that produce liquefied nitrogen as a way to store energy from intermittent renewable energy sources. Liquefied air might also be used to drive pistons in the engines of low-emission vehicles.
One company, Highview Power Storage of London, has raised $18 million and built a pilot plant that will use liquid air to store power from the grid. Highview has teamed up with Messer, the large industrial gas company, to help develop the technology.

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