A fluid at 0.7 bar occupying 0.09 m3 is compressed reversibly to a pressure of 3

Question

A fluid at 0.7 bar occupying 0.09 m3 is compressed reversibly to a pressure of 3.5 bar according to the law pvn = constant. The fluid is then heated reversibly at constant volume until the pressure is 4 bar; the specific volume is then 0.5 m3/kg. A reversible expansion according to the law pv2 = constant restores the fluid to its initial state. a. Sketch the cycle on p-v diagram b. Calculate the mass of the fluid present c. Determine the value of n in the first process d. Compute the net work of the cycle.

Explanation / Answer

a.0.0753kg; b.1.847; c.-640

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