A heat engine made with an ideal gas with f = 5 degrees of freedom has...

A heat engine made with an ideal gas with f = 5 degrees of freedom has 3 steps. Starting with a volume of 8 liters and a pressure of 1.3 × 10^5 Pa, the gas is compressed adiabatically to a volume of 1 liter and a pressure P2. Next the gas expands at constant pressure back to 8 liters, then the pressure drops at constant volume back to 1.3×10^5 Pa.

Draw the cycle in a P −V diagram.

Calculate the pressure P2.

Calculate the eﬃciency of the engine.

Calculate the ratio Tmin/Tmax of minimum and maximum temperatures during the cycle and compare the eﬃciency of this engine to e(Carnot) of a Carnot engine operating with the same value of Tmin/Tmax.

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genius_generous answered 1 year ago

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