A fluid at 0.7bar occupying 0.009m3 is compressed reversibly to a pressure of 3.5bar according to a law pv^n = constant. The fluid is then heated reversibly at constant volume until the pressure is 4bar; the specific volume is then 0.5m3/kg . A reversible expansion according to a law pv^2 = constant restores the fluid to its initial state. Sketch the cycle on a p-v diagram and calculate:(adsbygoogle = window.adsbygoogle || []).push({});

I. The mass of fluid present

II. The value of n in the first process

III. The net work of the cycle

Answers:

0.0753kg; 1.847; -640

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# Reversible expansion according to a law pv^2 = constant

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