Power controller for heat tracing cable which responds to ambien

Details Power controller for heat tracing cable which responds to ambien Power controller for heat tracing cable which responds to ambien

1988-06-15

1989-08-22

Paschall, M. H.

Electric heating

Heating devices

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

219501, 219494, 219301, 374134, H05B 102, H05B 300

Patent

active

048598348

ABSTRACT:
A power controller is provided for controlling the distribution of power to heat tracing cable or the like. Heat tracing cable is used for maintaining a desired process temperature in pipes or vessels when the outside ambient temperature falls below the desired process temperature. Based on outside air temperature the controller of the present invention determines the percent of power which should be supplied to the heat tracing cable network to maintain the temperature. The power controller hereof alters the length of time that power is supplied to the power network to control the amount of heat supplied. Advantageously, the power controller results in significant energy cost savings by supplying only the specific energy required to maintain the temperature in the heating cable network.

REFERENCES:
patent: 3423570 (1969-01-01), Trabilcy
patent: 3456096 (1969-01-01), Bilbro
patent: 3706872 (1972-12-01), Trabilcy
patent: 4002881 (1977-01-01), West
patent: 4072848 (1978-02-01), Johnson et al.
patent: 4150281 (1979-04-01), Hinz
patent: 4484061 (1984-11-01), Zelinka et al.
patent: 4564747 (1986-01-01), Offermann
patent: 4575617 (1986-03-01), Cooper
patent: 4606320 (1986-08-01), McGhee
patent: 4725713 (1988-02-01), Lehrke

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