I Is this transformation irreversible?

AI Thread Summary
Cyclic transformations can be reversible, and it is incorrect to assume they are always irreversible. The discussion highlights that the TS diagram does not provide information about the work involved or the specifics of the process. A reversible process can indeed correspond to the same cycle depicted in the diagram. Therefore, one cannot conclude that extracting heat from a cold reservoir to a hot one is feasible without other effects. The nature of the transformation depends on the details of the process rather than the cycle itself.
Ahmed1029
Messages
109
Reaction score
40
Screenshot_2022-11-04-03-42-24-87_e2d5b3f32b79de1d45acd1fad96fbb0f.jpg

This is a cyclic transformation. Is it safe to say thay it's irreversible because if you reverse it, it means I could extract an amount of heat from a cold reservoir and move it into a hotter reservoir with no other effect?
 
Science news on Phys.org
Ahmed1029 said:
View attachment 316689
This is a cyclic transformation. Is it safe to say thay it's irreversible because if you reverse it, it means I could extract an amount of heat from a cold reservoir and move it into a hotter reservoir with no other effect?
No it's not safe to say that. This TS diagram doesn't say anything about the amount of work that's being done on or by the surroundings, or how the process is carried out. I can easily visualize a reversible process corresponding to this cycle.
 
Reply
  • Like
Likes Ahmed1029 and Lord Jestocost

Similar threads

I Entropy change due to heat transfer between sources
Replies
15
Views
3K
I Focus Problem for Entropy Change in Irreversible Adiabatic Process
2
Replies
60
Views
9K
I Reversible / Irreversible Fundamental Equation
Replies
3
Views
1K
B Question regarding Heat Transfer in Carnot Engine
Replies
1
Views
2K
B Entropy change for reversible and irreversible processes
Replies
12
Views
2K
I Elementary Ideas About Entropy -- Is this textbook example correct?
Replies
16
Views
2K
Irreversible cycles, Carnot's Principle and volume-pressure diagrams
Replies
7
Views
2K
Show that entropy is a state function
2
Replies
57
Views
7K
I Why does Callen insist a process must be reversible here?
Replies
8
Views
2K
I Irreversible adiabatic processes & entropy change (clarification needed)
Replies
22
Views
5K

Hot Threads

Recent Insights

Back
Top