Steam flowing at 5.5 kg/min enters an adiabatic expander at 7.0 MPa and 650 C and leaves at 0.2MPa and 200 C. The expander delivers a total of 75 kW of power. A) Calculate the efficiency of theexpander. B) Use the temperature-independent heat capacity of water(found on inside of backcover) to assess whether steam is behaving ideally in this adiabatic expansion.

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor