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Homework Help: Efficiency of the heating process

  1. Jun 16, 2011 #1
    120MJ of heat are used to heat up a 1100kg component from 22oCelsius to 180oCelsius, in 1 hour, prior to heat treatment. If the specific heat capacity of the components material is 500J/kg, calculate the efficiency of the heating process.

    Please could somone give me the equation that i need to work out the efficenency i will then subit my attempt thx
  2. jcsd
  3. Jun 16, 2011 #2


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    Efficiency, in this sense, would be (heat added to the component)/(heat used to heat up the component).
  4. Jun 16, 2011 #3
    Check units on specific heat. Eff=heat required/heat supplied
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