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re: good source of energy
3 apr 1996
mel lopes wrote:
>during the last 8 months i have been measuring the temperature of
>the sewer across from my street.
gee mel, what an interesting hobby :-) i built a small sewage treatment plant
in my front yard a couple of years ago, with some trash cans and air pumps
and heaters and metering pumps, and a sand filter and ferric chloride drip.
i didn't have a real sewer to play with...
>for reasons not clear to me during the winter the temperature was
>consistently more than 20 degrees c (68 f)
that i can understand. showers, dishwashers, laundry... condensed steam?
>and during the summer about 8 degrees c ( 47 f for our american friends )
that seems strange. perhaps the st. lawrence river flows through your sewers
during the summer?
>un ideal source for a heat pump.
oui. si on peut eviter la corrosion et l'isolation des ordures.
>is anyone else interested on this subject ?
it sounds like a great idea, but it seems simpler to pump in some montreal
city water, cool it a bit in the winter, in a special tank with a water-water
heat exchanger (?), so there is little danger of contamination, and pump it
back out to the street... perhaps you could get permission to do this on an
experimental basis.
nick
"la science a besoin d'air puree'"
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