Stoves and furnaces – Liquid heater – Boiler receiving hot liquid or steam from stove or furnace
Patent
1990-01-17
1990-12-18
Dority, Carroll B.
Stoves and furnaces
Liquid heater
Boiler receiving hot liquid or steam from stove or furnace
F24H 100
Patent
active
049778854
ABSTRACT:
A system is described for supplying water heated to a desired temperature range to a facility having a demand for the heated water varying widely between a normal flow rate and a peak flow rate. The system includes a water heater having an output capable of supplying water heated to the desired temperature at the normal flow rate, and a storage tank for storing additional water heated to the desired temperature. Under conditons of normal flow rate, unheated water is supplied directly to the water heater with no flow to the tank. When the flow increases above the normal flow rate, unheated water is supplied to the tank, and heated water is withdrawn from the tank and cold water is simultaneously supplied to the water heater. The flow between the tank and the water heater is limited to the capacity of the heater to supply water at the desired temperature, and the excess demand is supplied by heated water within the tank. After the flow rate returns to normal, water continues to pass from the tank to the heater and is recycled to the tank until such time as the water in the tank is at the desired temperature. At that time, unheated water again bypasses the tank and flows directly to the heater.
REFERENCES:
patent: 1109946 (1914-09-01), Stack
patent: 1913622 (1933-06-01), Williams
patent: 2591400 (1952-04-01), Burklin
patent: 2660163 (1953-11-01), Whitney et al.
patent: 3575157 (1971-04-01), Whittel
patent: 3705574 (1972-12-01), Duncan
patent: 4680444 (1987-07-01), Post
Herweyer Eleanor B.
Herweyer Elliott E.
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