Heat exchanger and installation for extracting heat from waste water
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United States of America Patent
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May 13, 2014
Grant Date -
Jul 19, 2007
app pub date -
Apr 29, 2005
filing date -
Apr 30, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A heat exchanger system extracts heat from sewer waste water. Preferably, a first surface is narrow band in an interior surface of a pipe, and the band is preferably oriented transverse to a direction of fluid flow. In the case of a horizontal pipe, the band may be a partial band, and may be limited substantially to a wetted portion of the pipe in order to reduce the size of the band.
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