Question

An expander receives 0.5 kg/s air at 2000 kPa, 300 K with an exit state of 400 kPa, 300 K. Assume the process is reversible and isothermal. Find the rates of heat transfer and work neglecting kinetic and potential energy changes. 

Answer 1

 Expander, single steady flow.

Process: T is constant and sgen = 0

Ideal gas and isothermal gives a change in entropy so we can solve for the heat transfer