Waste-water heat recovery system

Details Waste-water heat recovery system Waste-water heat recovery system

2006-10-10

2010-12-14

Huynh, Khoa D (Department: 3751)

Baths, closets, sinks, and spittoons

Shower

C004S661000, C004S597000, C004S598000

Reexamination Certificate

active

07849530

ABSTRACT:
The present invention relates to a household heat recovery device and more specifically to a wastewater heat recovery unit, which absorbs residual heat from the water flowing onto the floor and down the drain of an ordinary household shower or bathtub unit. In one embodiment, the heat recovery device adapts for ease-of-use and enables quick set-up in most existing and typical showers or bathtubs without any tools and without coupling to the existing plumbing. Internal passages direct the effluent shower water through a serpentine path to a discharge drain. Over time, the heat transferred from the water to the device then radiates into the environment—thus reducing the total energy cost for a household by reducing the thermal load on the main heating unit for the household.

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