Chapter 7, Problem 7.25P

Steam to a turbine at a mass flow rate of 1.4 kg/s, 700 kPa pressure and 400 °C enters the temperature. Steam at 100 kPa pressure and 1.4 m3/kg specific volume exits the turbine. Heat transfer from turbine to environment 50 kW, with turbine Since the boundary temperature between the environment is 70 °C, a) Find the power produced by the turbine, entropy produced in the turbine and isentropic efficiency of the turbine. Note: The changes in kinetic and potential energies will be neglected and T (K) = 273 + °C will be taken.

Please be very detailed

A geothermal powerplant uses steam that enters  a nozzle @ 973.15 K at 300 kpa under a velocity of having 20 m/sec, such that the steam exits at  200 kpa. The operator provides the process that is adiabatic and reversible. Calculate the ff. a. going out velocity of steam b. the going out temperature c. the sp. enthalpy at going out.

A condenser (heat exchanger) brings 1 kg/s water flow at 10 kPa quality 95% to saturated liquid at 10 kPa. The cooling is done by lake water at 20 degree Celsius that returns to the lake at 30 degree Celsius. For an insulated condenser, find the flow rate of cooling water.

A steam with a quality of 49%, enters an adiabatic nozzle at 3.5 MPa and leaves at 0.4 MPa and 140 oC with a flow of 7 m/s. Find the entrance velocity, in m/s.

Air at the rate of 14kg/sec expands from 3bar, 1500C, 0.1m3 to 1 bar reversibly and adiabatically. Find the exit temperature and power developed. If the heat is given to the system 1200J. Find out the change in internal energy

Air enters an insulated compressor at ambient conditions, 100 kPa, 20oC at the rate of0.2 kg/s and exits at 500 K. The isentropic efficiency of the compressor is 70%. Whatis the exit pressure? How much power is required to drive the compressor? Assumespecific heats at room temperatures.

Water Vapor pressure 8 MPa and 350 in an adiabatic turbineIt enters at a temperature of oC and at a pressure of 750 kPacomes out. Reversible The amount of work done by the unit mass of steam for the processcalculate.

A-A nozzle should produce a flow of air with 200 m/s at 20°C, 100 kPa (exit condition). It is estimated that the nozzle has an isentropic efficiency of 92%. Calculate the inlet air conditions, assuming that the inlet kinetic energy is negligible. B- 1kg of air at 10bar and 125°C receives heat at constant pressure until its temperature become 650°C, its then expands adiabatically to pressure of 1bar. Determine the change of entropy during each process and the final air temperature.