Energy demand controller and method therefor

Details Energy demand controller and method therefor Energy demand controller and method therefor

1976-07-12

1978-05-16

Truhe, J. V.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219485, H05B 302

Patent

active

040900622

ABSTRACT:
An energy demand controller adaptable for a house or building having a plurality of heating zones and appliances. The energy demand controller includes a temperature sensor for each zone, a central controller receptive of all the temperatures from each zone for comparing the sensed temperature to a predetermined value, and a switch panel having solid state switches responsive to commands from the central controller for selectively delivering power from a power source to the heaters and appliances. When the zones require heating because of a first predetermined temperature difference between the sensed temperature and the desired temperature, then the heaters for the various zones are sequentially activated for a short predetermined time interval. When a greater temperature difference exists between the desired level and the sensed level in a particular zone, the heaters for that zone are activated full time. In the event that a given number of such zones have their heaters activated full time, then all power to the appliances is optionally turned off thereby preventing simultaneous electrical consumption by heaters and the appliances. Priority is optimally provided to the electrical consumption by the appliances over the short predetermined timed heating of the zones. A novel method is disclosed for activating heaters and appliances in a given order in order to minimize peak power demands.

REFERENCES:
patent: 3351739 (1967-11-01), Eckman
patent: 3489913 (1970-01-01), Wildi
patent: 3906242 (1975-09-01), Stevenson
patent: 4020358 (1977-04-01), Wyland

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