Heat Exchanger
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United States of America Patent
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N/A
Issued Date -
Feb 3, 2011
app pub date -
Jul 29, 2010
filing date -
Jul 29, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed herein is a heat exchange apparatus. The apparatus comprises one or more double walled conduit, each having an outer conduit and an inner conduit located coaxially inside the outer conduit. The conduits define a first fluid passageway for cold water at a first temperature. A drain defines a second fluid passageway for grey water at a second temperature and is located in the drain and downstream of the grey water flowing therethrough. The grey water when flowing in the second fluid passageway effects heat transfer to the cold water flowing in the first fluid passageway across the inner and outer conduits.
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