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Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:   (doi:10.13031/2013.17772) in Electric Heating. Chapter 12 in Fundamentals of Electricity for Agriculture, 3rd edition, 343-349. St. Joseph, Michigan: ASAE. . Copyright 2004 American Society of Agricultural and Biological Engineers, St. Joseph, Mich.
Authors:   Gustafson, Robert J., and Mark T. Morgan
Keywords:   Features of Electric Heating, Resistance and Radiant Heating, Dielectric Heating, Induction Heating, Electric-Arc Heating

Today electricity enables us to produce and control heat in nearly any desired location, making electric heating a convenient and safe heating alternative that is used extensively in agriculture, other industries, and residences. Some of the advantages of electric heating are:

  • Ease and accuracy of temperature control within close tolerances and with almost instantaneous response.
  • Combustion is not involved, so there are no open flames or hot gases and other products of combustion that must be vented.
  • The need for on-site fuel storage is eliminated.
  • Electric heaters can be designed to distribute heat evenly over a large area or to localize heating as desired.
  • Equipment involved is compact, quiet, clean, relatively inexpensive, may be portable, and may be installed in remote or concealed locations.
Electrical energy can be transformed into heat by any one or a combination of the three basic components of electrical impedance: resistance, capacitance, and inductance. Available methods for conversion of electric energy to heat are: (a) resistance and radiant heating, (b) dielectric heating, (c) induction heating, and (d) electric-arc heating. Each of the methods is discussed in the following sections.

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