Inventors:
Jeffery P. Hausler - New Braunfels TX
Paul C. Baria - Austin TX
Alfred Majek - Meadows TX
Jeffrey B. Moore - New Braunfels TX
Assignee:
Letco Management Company, Inc. - New Braunfels TX
International Classification:
H05B 102, H05B 300
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.