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stonecoldgen
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Homework Statement
The PV diagram below (I will describe it) shows a cycle for 4.87moels of an ideal gas. The path ab is along an isothermal line.
Pressure is in atm and volume in m3
Point a: (.08, 6)
Point b: (.24,2)
Point c: (.08, 2)
Find the ideal and the actual efficiency of the cycle
Homework Equations
1atm=101,300Pa
PV=nRT
1-TL/TH=[itex]\epsilon[/itex]
[itex]\epsilon[/itex]actual=Wout/Qin
The Attempt at a Solution
First of all, convert the pressures in atm to Pascals, to make life easier.
The temperature at a and b is 1,200K, the temperature at c is 400K. (found with PV=nRT)
so i thought that plugging that into 1/TL/TH=[itex]\epsilon[/itex] would give me the ideal efficiency. I got 67%
However, I don't know how to get the actual efficiency. I don't know what Qin and Wout are exactly