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Consider a Carnot heat engine cycyle executed in a closed system (piston-cylinder device) using 0.01848695 kg...

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Mechanical Engineering

Consider a Carnot heat engine cycyle executed in a closed system(piston-cylinder device) using 0.01848695 kg of stem as the workingfluid. It is known that the maximum absolute temperature in thecycle is three times the minimum absolute temperature, and thenet-work output of the cycle is 90 KJ assuming no kinetic andpotential energy changes. If the steam changes from saturated vapor(state 3=h_g) to saturated liquid(state 4=h_f) during heatrejection (process3-4) determine

a) the thermal efficiency of this Carnot Cycle

b) the head addition during the process 1-2 (isothermalexpansion)

c) the heat rejection during process 3-4 (isothermalcompression)

d) the temperature of the steam during the heat rejectionprocess.

(a hint: use energy balance equation, H=U+PV, and h_g -h_f =h_fg

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