10 Apr '11, 12pm

Legendary Sewers Could Provide Renewable Heat for Paris

As reported by Alexandria Sage of Reuters, average temperatures in the sewers of Paris range up to 68 degrees Fahrenheit. As with any other geothermal system, you can pipe a special heat-conveying fluid through the warm sewage, then extract energy from the heated fluid. It’s a closed system, so nothing stinky leaves the sewer. The system is currently being tested at school, and in an interesting twist the Elysee Palace will be one of the next buildings in line to get geothermal sewer energy, along with a town hall and a public swimming pool. Sage notes that the system is only effective up to about 600 feet of its source, which is why its potential extends only to about ten percent of Paris.

Full article: http://cleantechnica.com/2011/04/10/legendary-sewers-coul...

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