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Re: [Phys-L] Carnot (?) efficiency of non-Carnot cycles



On 03/03/2015 11:07 AM, Carl Mungan wrote in part:

Define efficiency W/Qh = 0.5ln2/(ln2+0.75) = 0.24015.

Algebra error.

The denominator is Qh, which is just ln(2),
not ln(2) + 0.75.

I have no idea where that 0.75 came from.

I get efficiency of 0.5, as expected.

Hint: I used a spreadsheet to run an example.
That makes it particularly easy to check the work.