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The Weekly Geek: combined heat and power (CHP)
Posted by bex on 7 March 2008.
The ROCA 3 CHP plant in Rotterdam provides electricty and heat to 400,000 homes
Due to popular demand (well, demand anyway), The Weekly Geek now has its very own RSS feed.
Back in 1882, Thomas Edison built the United States' first electric power plant. Pearl Street Station, which supplied the good folks of Lower Manhattan with electricity for lighting and steam for manufacturing, was around 50 per cent efficient.
125 years on, the typical UK power plant is just 38 per cent efficient. But those modern power plants that have been built on the same principles as Edison's are reaching efficiency levels of up to 95 per cent.
So how did Edison do it? And where are we going so wrong?
In this week's slightly tardy Weekly Geek, we're looking at combined heat and power (CHP): the system Edison was using, and the heart of any truly clean and efficient decentralised energy system. (Those who read the first Weekly Geek on decentralised energy may notice a fair bit of crossover.)
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