Blogposts tagged 'Chp'

Mega-inefficiency: Only 38 per cent of the coal burned at Drax actually generates power

Energy efficiency. What does that phrase make you think of? Here are a few free-association words I pulled out of my head: insulation, draught proofing, grey, tax return, boring, Germany. Yes, sometimes I do find it hard to get excited about using energy more smartly. But that's only because I'm an idiot.

Avedore CHP plant in Denmark

Remember how we said last month that industrial combined heat and power (CHP) plants could save us money, increase our energy security and help slow climate change?

Well, we've just heard that plans are afoot for just such a plant in Scotland. The Tullis Russell paper mill plans to reduce its annual carbon emissions by around 250,000 tonnes a year by switching to biomass CHP for its electricity and steam.

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.)