A vertical cylinder A covered by a fl oating piston that maintains a pressure of pA = 2000 kPa is connected, via a turbine, to a vertical cylinder B covered by a fl oating piston that maintains a...

A vertical cylinder A covered by a fl oating piston that maintains a pressure of pA = 2000 kPa is connected, via a turbine, to a vertical cylinder B covered by a fl oating piston that maintains a pressure of pB = 120 kPa (Figure P8.51). All the parts of the system are well insulated. Initially cylinder A contained 4 kg of air at 350°C and cylinder B was empty. The valve is opened and air flows from A to B. At the end of the process the temperature in B was 160°C.

a. What is the condition for the flow to stop?

b. Find the final states at A and B.

c. Find the work and heat interactions of air.

d. Find the work of the turbine.

e. Find the change of entropy of everything involved in the process.

f. Could the process exit?