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In: Mechanical Engineering

0.5 kg of air at 30 bar and 350 °C is allowed to expand reversibly in...

0.5 kg of air at 30 bar and 350 °C is allowed to expand reversibly in a cylinder behind a piston in such a way that the temperature remains constant to a pressure of 0.75 bar. Based on the law pv1.05= constant, the air is then compressed until the pressure is 10 bar. Assuming air to be a perfect gas, determine the:

a) net entropy change,
b) net heat flow,
c)net work energy transfer and sketch the processes on a T-s diagram, indicating the area, which represents the heat flow.

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Expert Solution

samet mamat answered 1 year ago
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