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Energy conversion

  1. Nov 23, 2004 #1
    Is there any fairly simple way of converting energy in the form of heat to energy in the form of electricity or kinetic?
  2. jcsd
  3. Nov 23, 2004 #2
    ummm, a steam engine?
  4. Nov 23, 2004 #3
    Heat by itself can't be converted, as it is the highest entropy (most disordered) form of energy. If you have a temperature difference however - something that is hot, and something else that is cold, then there are whole families of heat engines that will produce useful forms of energy, while cooling down the hot thing and warming up the cold thing. A Stirling (hot air) engine is able to produce useful work when the temperature difference is only a few degrees.
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