Heat exchange – Intermediate fluent heat exchange material receiving and... – Liquid fluent heat exchange material
Patent
1982-07-23
1984-06-19
Davis, Jr., Albert W.
Heat exchange
Intermediate fluent heat exchange material receiving and...
Liquid fluent heat exchange material
165 70, 16510414, F28D 1500
Patent
active
044549113
ABSTRACT:
Waste water heat transfer apparatus (10) is disclosed in which the waste hot water from residential or commercial uses such as washing, etc., is passed into a separate drain (24) and then into a heat exchanger (17) which includes a waste water conduit (40) therein, and then to the sewer drain (29). A supply water conduit (70) extends through the heat exchanger (11) generally paralleling the waste water conduit (40) and has fresh water run therethrough in a direction opposite to that of the flow of waste water to an outlet end, after which the supply water is provided to a water heater (20). The heat exchanger interior is filled with a heat transfer liquid (39), and is so divided by baffles (75, 76) that a temperature gradient is formed in the heat transfer liquid adjacent to the waste water conduit (40), with the liquid being warmest adjacent the inlet (68) of the waste water conduit and decreasing in temperature toward the outlet (69) of the conduit. The supply water, flowing in the opposite direction to that of the waste water, has its lowest temperature at its inlet end (71), which is adjacent the lowest temperature heat transfer liquid, and encounters progressively warmer adjacent heat transfer liquid as it rises upwardly in the heat exchanger toward its outlet end (72). A substantially constant temperature differential is therby maintained throughout the heat exchanger between the waste water within the waste water conduit and the adjacent heat transfer liquid, and between the supply water in the supply water conduit and the adjacent heat transfer liquid. The transfer of a portion of the heat contained in the waste water to the supply water reduces the amount of energy that must be consumed by the water heater, and the system may also be tied to a hot water space heater (45) for a home or other building to preheat the water supplied to the boiler and thereby reduce the energy demand for space heating purposes.
REFERENCES:
patent: 2399985 (1946-05-01), Chandler
patent: 2418446 (1947-04-01), Anderson
patent: 2435875 (1948-02-01), DeLore
patent: 2481720 (1949-09-01), Campbell
patent: 3001467 (1961-09-01), Stackler
patent: 3171387 (1965-03-01), Muller
patent: 3341122 (1967-09-01), Whittell
patent: 3669184 (1972-06-01), Franzreb
patent: 3896992 (1975-07-01), Boroving et al.
patent: 3958555 (1976-05-01), Horne
patent: 4034801 (1977-07-01), Beinstien
patent: 4084745 (1978-04-01), Jones
patent: 4109858 (1978-08-01), Moses
patent: 4114686 (1978-09-01), Mueller et al.
patent: 4116379 (1978-09-01), Movick
patent: 4123003 (1978-10-01), Winston
patent: 4135665 (1979-01-01), Nealy
patent: 4136731 (1979-01-01), DeBoer
patent: 4166944 (1979-09-01), Scott
patent: 4175698 (1979-11-01), Brosenius
patent: 4176788 (1979-12-01), Holman
patent: 4256176 (1981-03-01), Cohen
"Solar Energy: Part II, The Continent," by A. A. Field, Heating and Air Conditioning, Mar. 1976.
Davis Jr. Albert W.
Dotson S. Gayle
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