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The Carnot Cycle

  1. Nov 1, 2004 #1
    Why do real engines never attain the efficiency of the Carnot cycle?
     
  2. jcsd
  3. Nov 1, 2004 #2

    russ_watters

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    Staff: Mentor

    Two reasons:
    -First, they don't use the carnot cycle because its acts slowly.
    -Second, all real engines produce friction and other losses.
     
  4. Nov 1, 2004 #3
    So what type are processes are we talking about?
     
  5. Nov 1, 2004 #4

    Bystander

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    Carnot cycle: reversible processes require infinite time to complete.

    "Real engine:" processes are completed in finite time, and are, therefore, irreversible, meaning more heat is lost in increasing the entropy of the universe.
     
  6. Nov 2, 2004 #5

    Clausius2

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