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Electricity from heat?
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Written by Gizmo   
Tuesday, 28 November 2006 07:47

A little outfit called Eneco has come up with a way to convert waste heat to electricity.  "Big deal", I hear you say "We've been able to do that with Peltiers for years, but they aren't very efficient and require high temperature differentials in order to work".  Well, that's true, but what Eneco has isn't a pelt; it works using thermionic emission, and Eneco claim that their technology is more efficient than anything else in the sub-10KW power generation arena.

In addition to converting heat to electricity, these devices also work in reverse (much like pelts) to provide cooling when power is applied.  They claim to have achieved temps as low as -150C, and the cooling efficiency for loads less than 200W is said to be better than anything else on the market.

Apparently, Eneco have had discussions with outfits such as Apple and Dell , to incorporate this technology into laptops, the idea being to recover the waste heat from the CPUs and other components and use it to power cooling fans, display lighting, etc.

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