All Problems

Second law of thermodynamics, entropy

Problem 2.119

An ideal gas whose adiabatic exponent equals \(\gamma\) goes through a cycle consisting of two isochoric and two isobaric lines. Find the efficiency of such a cycle, if the absolute temperature of the gas rises \(n\) times both in the isochoric heating and in the isobaric expansion.

Reveal Answer
η=1(n+γ)/(1+γn)\eta=1-(n+\gamma) /(1+\gamma n)