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What exactly is exergy

  1. Jul 31, 2009 #1
    what exactly is exergy,my book says there is something called exergy like energy?
  2. jcsd
  3. Jul 31, 2009 #2
    Re: exergy

    Straight from wikipedia: "In thermodynamics, the exergy of a system is the maximum work possible during a process that brings the system into equilibrium with a heat reservoir."
  4. Jul 31, 2009 #3
    Re: exergy

    so is the term used only with respect tom thermodynamics?
    please elaborate equilibrium with heat reservoir
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