Consider an adiabatic, piston cylinder assembly containing 1 kmol of propane (C3H8) and 7 kmol of...

Consider an adiabatic, piston cylinder assembly containing 1 kmol of propane (C₃H₈) and 7 kmol of oxygen (O₂). The piston is initially pinned, and the pressure is P1=1000 kPa with temperature T=1000 K. The pin is removed and the system expands until the total cylinder pressure is P2=100 kPa and the temperature is T2=600 K. Assume ideal gases and constant specific heat.

Oxygen: c_p=0.918 kJ/kg*K, c_v=0.658 kJ/kg*K, MW=32 kmol/kg

Propane: c_p=1.67 kJ/kg*K, c_v=1.48 kJ/kg*K, MW=44 kmol/kg

Universal gas constant R=8.314 kJ/kmol*K

Find:

a) the mass of propane and oxygen in kg

b) the initial cylinder volume in m³

c) the work produced from state 1 to 2 in kJ

d) the amound of entropy generated from state 1 to 2 in kJ/K

Solutions

Expert Solution

samet mamat answered 2 years ago

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