November 18, 2008

Need more power? Try recycling what you’ve already used

By CHRIS MORRISON
VentureBeat.com

http://www.nytimes.com/external/venturebeat/2008/11/18/18venturebeat-need-more-power-try-recycling-what-youve-al-100571.html?pagewanted=print


Another significant funding for the energy conservation crowd has been 
announced this morning, with ReGen Power Systems getting $5 million for 
an engine that can convert waste industrial heat into power. That may 
sound a bit boring, but the investment and technology are a harbinger of 
big changes to come.

Everyone has experienced waste heat from electricity-driven machines — 
take your common electrical oven for example. The oven exists to cook 
things, whether atop its burners or inside. Either way it does it, the 
majority of the heat goes not to the food, but to the air and 
environment around the oven. Unless you need a warm kitchen, most of the 
electricity you just used was wasted.

Scale that up a few hundred times, and you’ve got a typical industrial 
process, along with its massive heat losses. Cooling towers exist just 
to get rid of all the excess. Of course, engineers have been aware for 
decades that they could turn that heat back into electricity if they 
liked, but the process never seemed to be worth it, at least in the 
United States — in Europe, with higher energy prices and a longer 
conservation tradition, some big plants do install waste heat recyclers.

But with prices set to rise, and worries over global warming, most 
industries are changing their minds. That’s providing openings for 
startups. Recycled Energy Development (RED) is one of the more developed 
companies, has worked on over $2 billion worth of projects according to 
its webpage, while just two days ago newcomer ElectraTherm reportedly 
raised $2.6 million in a first funding.

ReGen, also, is a newcomer; this funding is its first, and the company 
is still working on its designs. The company has a prototype 10 kilowatt 
engine that it will use to test out the concept, with a larger 500kW 
engine yet to come. That’s about 10 times the size of ElectraTherm’s 
first production unit, but that’s one of the encouraging things about 
the influx of new ventures; the heat recyclers they’re building aren’t 
just for the largest, hottest smokestacks, but will instead address 
nearly all industries. Ultimately, that could save gigawatts of energy, 
and generate billions of dollars in revenue yearly.

The $5 million funding was led by 21Ventures and the Quercus Trust. 
ReGen is based in New Salem, Mass.

-- 
================================
George Antunes, Political Science Dept
University of Houston; Houston, TX 77204 
Voice: 713-743-3923  Fax: 713-743-3927
Mail: antunes at uh dot edu

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