A. Steam enters a well-insulated turbine at 400 C and a pressure of 3000 kPa. The steam exits the turbine at 30 kPA. The turbine is known to have an isentropic efficiency of 0.92 and a mass flow rate of 120 kg/min. Determine the ACTUAL and MAXIMUM possible power produced by this turbine.
B. The compressor of a refrigeration unit operates with a flow rate of 1800 kg/hr and an isentropic efficiency of 0.75. The working fluid is R-134 which enters as a saturated vapor at 20 C and exits the compressor at a pressure of 1 MPa. Determine the power input required to operate the compressor.