Wastewater heat recovery device and method

Details Wastewater heat recovery device and method Wastewater heat recovery device and method

2011-08-16

2011-08-16

Ganey, Steven J (Department: 3752)

Baths, closets, sinks, and spittoons

Shower

With heating means

C004S596000, C004S597000, C004S661000, C165S047000, C165S066000, C165S909000

Reexamination Certificate

active

07996933

ABSTRACT:
A trap for recovering heat energy from a liquid has a chamber7with an internal baffle wall45-48.An upper chamber opening9and a weir at an inlet end13of a discharge conduit11are on opposite sides of the baffle wall. Liquid fed into the chamber via the upper opening flows downward and under the baffle wall before flowing upward and over the weir to be discharged from the chamber through the discharge conduit. A second liquid flows through a heat exchange conduit17-24.One preferred embodiment has a concentric arrangement of a plurality of cylindrical baffle walls alternating with a plurality of cylindrical chambers of the heat exchange conduit. A corresponding method of heat recovery is also claimed. In one preferred application, the trap is fitted into the base or floor tray of a shower for recovery of heat energy from waste shower water.

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