Steam enters an adiabatic turbine at 6MPa and 500°C and leaves at a pressure of 0.3MPa....
2. STEAM enters a reversible, adiabatic turbine at 6.0 MPa and 500 C. It leaves at 10 kPa. The mass flow rate is 40 kg/s. What is the power output of the turbine in kW? (Hints: W_dot = m_dot (h_2-h _1) and s_1=s_2). a) 1243 kW b) 2663 kW c) 33,570 kW d) 41,000 kW e) 49.725 kW
Steam enters an adiabatic turbine steadily at 7 MPa, 500 °C, and 45 m/s, and leaves at 100 kPa and 75 m/s. If the power output of the turbine is 5 MW and the isentropic efficiency is 77 percent, determine: A. the mass flow rate of steam through the turbine, B. the temperature at the turbine exit, and C. the rate of entropy generation during this process.
2. Steam enters an adiabatic turbine at 4.5MPa and 350°C and leaves at 225kPa with a quality of 85 percent. Neglecting the changes in kinetic and potential energies, determine the mass flow rate required for a power output of 700kW.
3. In a reheat cycle, steam leaves the boiler and enters the high-pressure turbine (HPT) at 6 MPa and 440 °C. After expansion in the high-pressure turbine to 500 kPa, the steam is reheated to 480 °C and then expanded in the low-pressure turbine (LPT) to 10 kPa. The end states of both the HPT and LPT fall in the liquid-vapor mixture region. Draw the cycle diagram and the T-s diagram, and determine the work done to the pump, total...
2(a) Steam enters a turbine at 6 MPa and 500°C at a rate of 1.5 kg/s and leaves at 20 kPa. Assume the turbine is adiabatic and neglect kinetic energy changes. The power output of the turbine is 2.5 MW. What is the phase of the steam entering the turbine? appendix 1-2.pdf
14. Steam enters an adiabatic turbine at 1,000 psia and 900°F and leaves at 3 psia. The turbine efficiency is 80%. The steady-state specific work (Btumn) developed by the turbine is most nearly (a) 290 (b) 325 (e)390 (d)409 (e) 490
Steam enters a turbine at 9 MPa and T1°C and leaves at 20 kPa with a quality equal to 0.60. Neglecting the changes in kinetic and potential energies, determine T1 if the mass flow rate through the turbine is 4 kg/s. The turbine’s power output is 7.5 MW and the heat loss from the turbine is 5 kJ/kg.
5-30 Air enters an adiabatic nozzle steadily at 300 kPa, 200°C, and 30 m/s and leaves at 100 kPa and 180 m/s. The inlet area of the nozzle is 80 cm². Determine (a) the mass flow rate through the nozzle, (b) the exit temperature of the air, and (c) the exit area of the nozzle. Answers: (a) 0.5304 kg/s, (b) 184.6°C, (c) 38.7 cm P = 300 kPa T, = 200°C Vi = 30 m/s A = 80 cm AIR...
Example A steam turbine receives steam with a specific enthalpy of 3121 kJ/kg. The steam leaves the turbine with a specific enthalpy of 2676 kJ/kg. The steam enters and leaves the turbine with velocities of 15 m/s and 60m/s. The elevation difference between the entry and exit ports is negligible and the heat energy lost through the turbine walls is 7600 kJ/h. Calculate the power output if the mass flow through the turbine is 0.5 kg/s. High pressure steam Low...
Question 2 Question 2 of 5 10 points Steam enters an adiabatic turbine at 10 MPa and 500"C and leaves at 10 kPa with a quality of 69 percent. The plant has power rating of 10 MW Neglecting the changes in the cand potent energies, determine the following enthalpy of steam at the entrance 3375.1 InkJ/kg enthalpy of steam at the exit 1842.4 InkJ/kg mass flow rate in kg's