A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

What is the basis for a "reversible heat engine"? I know that it is theoretical and can't exist. But even mathematically it doesn't seem to be possible. Specifically, a reversible heat engine needs two temperature bodies to operate. Any heat transfer would automatically result in entropy generation (dS=dQ/T). Any kind of heat transfer from the high temperature body would result in entropy generation, which makes the process irreversible?

  • This Question is Closed
  1. Michele_Laino
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    All thermodynamic transformations which occur in nature are irreversible, now for the Carnot's machine we suppose that the two involved thermodynamic transformations, verify this condition: \[\Large \frac{{{Q_1}}}{{{T_1}}} + \frac{{{Q_2}}}{{{T_2}}} = 0\] and that is why the efficiency of a Carnot's machine is the highest among the one of all of heat machines

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I see, so does this mean that for a Carnot heat engine, the ratio of entropy lost by the high temperature body is equal to the entropy gained by the lower temperature body, hence the net is zero and therefore there is no net entropy generation?

  3. Michele_Laino
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    that's right!

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks! :)

  5. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.