Does efficiency always depend on reversibility of the engine?

[Philip Koeck]

So you can't neglect the isochoric leg on the left in Chandra's drawing after all.

 

[Chestermiller]

So you can't neglect the isochoric leg on the left in Chandra's drawing after all.

Well, I would, but that's just my own personal judgment call.

 

[Philip Koeck]

To wrap this up: I've found another discussion of the efficiency of the Sterling cycle:
https://physics.stackexchange.com/questions/78915/efficiency-of-stirling-engine-and-carnots-theorem
Might be helpful.

 

[Philip Koeck]

Hi again.
I got a paper via another discussion forum (Research Gate). I don't seem to be able to upload it, though. It's the following paper:
A Simple Approach to Heat Engine Efficiency
Carl Salter (2000)
Journal of Chemical Education 77(8), pp. 1027 -1030

Highly recommended reading. Might help to resolve the controversy in the literature on how to calculate efficiencies.