Hot water supply system

Details Hot water supply system Hot water supply system

1989-02-09

1990-06-19

Pellinen, A. D.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

H05B 102

Patent

active

049356038

ABSTRACT:
A hot water supply system having a plurality of electric heaters arranged at vertically displaced positions in the hot water tank, and a controller for controlling the temperature of the water based on the signal supplied by a plurality of water-temperature sensors, by controlling the electric currents through the heaters in three different modes in such a way that the upper and lower heaters are turned on individually in a first mode; only the upper heater is turned on in a second mode; and only the upper heater is turned on at a low preset temperature in a third mode to prevent the water from freezing, supplying necessary and sufficient amount of hot water from the upper portion of the tank and feeding water from the lower portion of the tank, the system providing efficient electric current control of the heater depending upon the demands and ambient temperature conditions, thereby allowing efficient utilization of energy and making the hot water supply system superb.

REFERENCES:
patent: 1996625 (1935-04-01), Pendleton
patent: 2157910 (1939-05-01), McCormick
patent: 4058702 (1977-11-01), Jerles
patent: 4467178 (1984-08-01), Swindle
patent: 4508261 (1985-04-01), Blank
patent: 4511790 (1985-04-01), Kozak
patent: 4682279 (1987-07-01), Watabe
patent: 4737615 (1988-04-01), Stipe

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