I Is this transformation irreversible?

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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.
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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?
 
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Ahmed1029 said:
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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.
 
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