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How thermoelectric cooling works?

  1. Nov 24, 2011 #1
    I`ve read that in thermoelectric cooling the current passes through a two different materials and because electrons start to slow down and radiate heat cooling is acheived.
    But why not to use in this case a usual resistance instead of expensive metals?
    For example we will place coper wire inside of refrigerator and resistance outside.When current
    will pass through resistance it will dissipate heat.What would be difference from thermoelectricity?
  2. jcsd
  3. Dec 2, 2011 #2
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