Abstract: A system for controlling electrical energy consumption according to a user-set kilowatt limit and an automatic kilowatt limit calculated in a microprocessor. Power is limited by regulating an electric hot water heater according to a preset program and, if necessary, by lowering room temperatures due to electric heater cut back. The device features a computer-controlled display and simplified keyboard which permits the user to enter only valid data. The device also features program fail, power fail, and static detect circuitry to prevent computer error.
Type:
Grant
Filed:
January 31, 1980
Date of Patent:
January 25, 1983
Assignee:
Peak Demand Limiters, Inc.
Inventors:
Stanley S. Huffman, Alan F. Neel, Christopher A. Swartout, Neil E. Dvorak