F - Mech Eng,Light,Heat,Weapons – 28 – D
Patent
F - Mech Eng,Light,Heat,Weapons
28
D
257/18
F28D 7/02 (2006.01) F24D 17/00 (2006.01)
Patent
CA 1088512
ABSTRACT OF THE DISCLOSURE Water or air from sanitary drains, clothes dryers and the like having a temperature above the temperature of cold water normally entering the hot water tank, is directed through a heat exchanger which includes a coil connected bet- ween the source of cold water and the hot water tank. If connected to waste from a sanitary drain or the like, a tem- perature sensing valve is provided to divert drain water be- low a pre-determined temperature. In both cases, a water storage tank is provided into which the tempered water passes from the heat exchanger and this tank is situated above the heat exchanger. An inlet line extends from the heat exchanger to the storage tank and a circulating line extends from the storage tank to the cold water inlet line leading to the heat exchanger. A one-way valve is situated in this circulating line so that even if water is not being drawn from storage tank, circulation of the water from the storage tank through the heat exchanger, and back, is assured by convection.
289826
Kembel Walter W.
Ward Roderick J.
Ade & Company
Kembel-Ward & Associates Limited
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