Refrigerant R-134a enters an adiabatic compressor as saturated vapor at 100kPa at a rate of 0.5kg/s and exits at 1 MPa pressure. If the isentropic efficiency is 85%, what is the temperature of the refrigerant at the exit of the compressor?

Water vapor enters a reversible-adiabatic (isentropic) turbine with 4 MPa pressure, 500C temperature and 60 m / s velocity and exits the turbine with 75kPa pressure and 140 m / s velocity. Since the flow rate of the steam entering the turbine is 1 kg / h, find the power of the turbine.

Water enters a pump at 100 kPa and 30°C at a rate of 1.35 kg/s and leaves at 4 MPa. If the pump has an isentropic efficiency of 70 percent, determine the second-law efficiency for an environment temperature of 20°C.

Refrigerant-134a is to be cooled by water in a condenser. The refrigerant enters the condenser with a mass flow rate of 6 kg/min at 1 MPa and 70oC and leaves at 35oC. The cooling water enters at 300 kPa and 15C and leaves at 25oC. Neglecting any pressure drops, determine ; i. The mass flow rate of the cooling water required.ii. The heat transfer rate from the refrigerant to water.

R-134a enters an adiabatic compressor as a saturated vapor at 120kpa at a rate of 0.5 m³/min and exits at 1.2Mpa pressure. If the isentropic efficiency of the compressor is 75 percent, determine: a. The temperature at the exit. b. The power input..

Refrigerant-134a is expanded adiabatically from 100 psia and 100°F to a pressure of 10 psia. Determine the entropy generation for this process, in Btu/lbm·R.

An isentropic steam turbine processes 5.5 kg/s of steam at 3 MPa, which is exhausted at 50 kPa and 100°C. Five percent of this flow is diverted for feedwater heating at 500 kPa. Determine the power produced by this turbine. Use steam tables.

Argon gas enters an adiabatic turbine at 1350°F and 200 psia at a rate of 40 lbm/min and exhausts at 20 psia. If the power output of the turbine is 105 hp, determine the isentropic efficiency.

Steam enters an adiabatic turbine at 2.5MPa pressure and 450C, and at 60kPa pressure and 100C. comes out. If the power output of the turbine is 3MW, the mass flow and the isentropic efficiency of the turbine calculate.

The power output of an adiabatic turbine is 6.1 MW. Steam at a rate of 7 kg/s enters the turbine at 7 MPa, 600°C, and 80 m/s and leaves at 50 kPa, 150°C, and 140 m/s. Determine the isentropic efficiency of the turbine.