Hot water demand system suitable for retrofit

Details Hot water demand system suitable for retrofit Hot water demand system suitable for retrofit

1991-05-03

1994-01-11

Chambers, A. Michael

Fluid handling

With heating or cooling of the system

Hot and cold water system having a connection from the hot...

126362, 417 12, F04B 4900

Patent

active

052772195

ABSTRACT:
A hot water recovery system includes a hot water source; a hot water delivery line connected between said hot water source and at least one plumbing fixture along with a cold water delivery line connection between said plumbing fixture, a cold water source and said hot water source; a pump, interconnected between said hot and cold water delivery lines, enables circulation of water from the hot water delivery line through the cold water delivery line and into the hot water source, thus eliminating the need for a separate recirculation system. A control system causes the pump to circulate water from the hot water line into the cold water line and back to the hot water source when a hot water valve on said plumbing fixture is turned on; and a temperature sensor stops the pump, via the control system, to prevent heated water from being circulated through the cold water delivery lines.

REFERENCES:
patent: 1635745 (1927-07-01), Ellis
patent: 3776261 (1973-12-01), Houghton
patent: 4142515 (1979-03-01), Skaats
patent: 4201518 (1980-05-01), Stevenson
patent: 4606325 (1986-08-01), Lujan, Jr.

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