User Tools

Site Tools


Calculator of induction heating power

This section is an interactive calculator.

The order of magnitude for the required induction heating power can be estimated as a rough approximation, through a number of simplifying assumptions:

  • only the heated layer is taken into account (the rest of the material is ignored)
  • adiabatic heating conditions (no cooling due to convection, radiation, or conduction)
  • the same heating power is delivered to the material during the whole heating time (it is controlled regardless of temperature of the material)
  • magnetic permeability is assumed constant
  • transition to paramagnetism is not taken into account
  • skin depth is calculated for resistivity at the hottest temperature
  • the suggested frequency is estimated by assuming the skin depth being 4 times thinner than the heated layer
  • apart from resistivity all other values are assumed constant, and melting or any phase transition is ignored.

Input values
shape:       metal:      

heating efficiency (%) = (typically: Al = 40%, Cu = 30%, non-magnetic steel = 60%, magnetic steel = 85%)

heating time t (s) =       T start (°C) =       T end (°C) =      

length L (mm) =       width w (mm) =       heated thickness d (mm) =
Output values Auxiliary output values


Suggested frequency (kHz) =

Skin depth (at suggested freq.) (mm) =

Required heating power (kW) =

Required generator power (kW) =

Volume of heated layer (cm3) =

Mass of heated layer (kg) =

Density (kg/m3) =

Thermal coefficient of resistivity (%/K) =

Resistivity at T end (Ω·m) =

Specific heat capacity (J/(kg·K)) =

Relative magnetic permeability (-) =

This website uses cookies. By using the website, you agree with storing cookies on your computer. Also you acknowledge that you have read and understand our Privacy Policy. If you do not agree leave the website.More information about cookies
calculator/induction_heating_power.txt · Last modified: 2023/08/13 22:55 by stan_zurek

Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
CC Attribution-Share Alike 4.0 International Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki
Legal disclaimer: Information provided here is only for educational purposes. Accuracy is not guaranteed or implied. In no event the providers can be held liable to any party for direct, indirect, special, incidental, or consequential damages arising out of the use of this data.

For information on the cookies used on this site refer to Privacy policy and Cookies.