Energy efficient water heater

Liquid heaters and vaporizers – Automatic control of fluid fuel and water – Once through

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Details

122 14, 126374, F22B 3742

Patent

active

043242073

ABSTRACT:
Apparatus is disclosed for heating hot water in separate tank stages, and according to predetermined cyclic time patterns. A first smaller hot water tank is heated to a first elevated temperature under thermostatic control, and a second larger hot water tank is heated to a second lower temperature under thermostatic control and to a third elevated temperature under thermostatic control during a predetermined time cycle; provision is made for demand override of the heating mechanism of the second tank.

REFERENCES:
patent: 2352919 (1944-07-01), Stack
patent: 2522091 (1950-09-01), Burwell
patent: 2834865 (1958-05-01), Coates
patent: 3383495 (1968-05-01), Laube et al.
patent: 3484580 (1969-12-01), Morgan
patent: 3964466 (1976-06-01), Ohringer
patent: 4140104 (1979-02-01), Itagaki
patent: 4246764 (1981-01-01), Papadakus

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