Just some links/notes on a topic I became interested recently. Why do I find graywater heat reclaimation interesting?
- cost saving: reduced energy bill
- cost saving: extends the life of the water heater
- cost avoidance: average water heater recovery times are markedly improved
- environmental goodness
- low/no risk: passive system with no moving parts
See
- http://www.watercycles.ca/
- http://www.ecoinnovation.ca/residential-solutions/thermodrain-connection-options/
- http://www.theenergyconscious.com/wat7005.html
- http://www.ecoinnovation.ca/residential-solutions/
- http://gfxtechnology.com/contents.html
- http://dailyhomerenotips.com/2008/02/11/dwhr-drain-water-heat-recovery-follow-up/
- http://www.ecoshift.ca/Drain-Water-Heat-Recovery-DWHR-Overview.html
Seems like the price is around $750 for a bit of copper pipe that is supposed to last about 50 years.
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