Air at 5 bar pressure and 1000 K temperature enters a turbine operating at steady state. Air expands isentropically to a temperature of 600 K at the exit. Neglect the effect of potential and kinetic energies. Determine the work in kJ per kg of air flowing and the pressure at the exit. Assume that air behaves as an ideal gas.
Argon in a piston–cylinder assembly is compressed isentropically from state 1, where p1 5 300 kPa, T1 5 45°C, to state 2, where p2 5 600 kPa. Assuming the ideal gas model with k 5 1.67, determine (a) T2, in °C, and (b) the work, in kJ per kg of argon.
A rigid, well-insulated tank having a volume of 0.2 m3 is filled initially with Refrigerant 134a vapor at a pressure of 10 bar and a temperature of 40°C. A leak develops and refrigerant slowly escapes until the pressure within the tank becomes 1 bar. Determine
(a) the final temperature of the refrigerant within the tank, in °C.
(b) the amount of mass that exits the tank, in kg.