2. Steam enters an adiabatic turbine at 5MPa, 650°C, and 80 m/s and leaves at50kPa, 150°C, and 140 m/s. If the power output of the turbine is 8MW, determine(a) the mass flow rate of the steam flowing through the turbine and (b) the isentropicefficiency of the turbine. Table 2 Saturated and superheated waterP, kPa Tsat, °Ch, kJ/kghg505000P, kPa505000500081.32263.94T, °C150600700hf340.541154.52645.22794.2h, kJ/kg s, kJ/(kg · K)2780.27.94133666.97.26053900.37.5136s, kJ/(kg. K)SfSg1.0912 7.59312.9207 5.9737

Given data: Inlet pressure, P1 = 5 MPa Inlet temperature, T1 = 650°C Inlet velocity, V1 = 80 m/s…

2. Steam enters an adiabatic turbine at 5MPa, 650°C, and 80 m/s and leaves at 50kPa, 150°C, and 140 m/s. If the power output of the turbine is 8MW, determine (a) the mass flow rate of the steam flowing through the turbine and (b) the isentropic efficiency of the turbine.

2. Steam enters an adiabatic turbine at 5MPa, 650°C, and 80 m/s and leaves at 50kPa, 150°C, and 140 m/s. If the power output of the turbine is 8MW, determine (a) the mass flow rate of the steam flowing through the turbine and (b) the isentropic efficiency of the turbine.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

An adiabatic air compressor is to be powered by a direct-coupling adiabatic steam turbine that is also driving a generator. Steam enters the turbine at 12.5 MPa and 900 oC at a rate of 27 kg/s and exits at 4 kPa and a quality of 0.6. Air enters the compressor at 98 kPa and 310 K at a rate of 7 kg/s and exits at 1 MPa and 700 K. Determine the net power delivered to the generator by the turbine. h1 (kJ/kg) h2 (kJ/kg) Wcomp,in (kW) Wturb,in (kW) Wnet (kW)
Steam expands in a turbine steadily at a rate of 18,000 kg/h, entering at 7 MPa and 600°C and leaving at 50 kPa as saturated vapor. Assuming the surroundings to be at 100 kPa and 25°C, determine the power output of the turbine if there were no irreversibilities present.
Steam enters an adiabatic turbine at 3000C and 400.0 kPa. Heat is transferred until the pressurereaches 100 kPa. Determine (a) the change of enthalpy; (b) the work; (c) the change of internalenergy.
Steam enters an adiabatic turbine at 5 MPa and 500°C with a 50 m/s velocity and exits from the turbine at 100 kPa and 75 m/s velocity. The power output of the turbine is 5 MW and the isentropic efficiency is 80%. Determine, a) The mass flow rate of the steam passed through the turbine. b) The temperature at the turbine exit. c) The rate of entropy generation during this process.
Steam enters an adiabatic turbine at 800 psia and 900F and leaves at a pressure of 40 psia. Determine the maximum amount of work that can be delivered by this turbine.
A 0.2-m³ rigid tank initially contains saturated refrigerant- 134a at 1.0 MPa and 100 percent quality. The tank is connected by a valve to a supply line that carries refrigerant-134a at 1.6 MPa and 40°C. The valve is now opened, allowing the refrigerant to enter the tank, and it is closed when the tank contains only saturated liquid at 1.3 MPa. The refrigerant exchanges heat with its surroundings at 50°C and 100 kPa during this process. Determine (a) the amount of heat transfer and (b) the exergy destruction associated with this process.
Steam entering an adiabatic turbine with a speed of 60 m / s at 5 MPa and 550 ° C leaves the turbine 30 kPa at 70 ° C and 120 m / s. Since the turbine power output is 4 MW;Find the isentropic efficiency of the turbine.
A piston–cylinder device contains 0.05 kg of steam at 1 MPa and 300°C. Steam now expands to a final state of 200 kPa and 150°C, doing work. Heat losses from the system to the surroundings are estimated to be 2 kJ during this process. Assuming the surroundings to be at T0 = 25°C and P0 = 100 kPa, determine the second-law efficiency for the process.
Devices can be combined to perform a variety of tasks. An adiabatic compressor, with air as the working fluid, is to be powered by an adiabatic steam turbine, which is also driving a generator. Steam enters the turbine at 12.5 MPa and 500 ∘C at a steady rate of 27.30 kg/s and exits at 10 kPa and a quality of 0.8710. Air enters the compressor at 98 kPa and 295.0 K K at a steady rate of 12.600 kg/s and exits at 1 MPa and 635.0 K. For air, MW=29.0 g/mol, Cp=3.5R. Note: The IUPAC sign convention for work is used. Work into the system has a positive value. What is the magnitude of the power delivered to the generator by the turbine? The answer needs to be in MW.
The compressor in a refrigerator compresses saturated R-134a vapor at 0°F to 200 psia. Calculate the work required by this compressor, in Btu/lbm, when the compression process is isentropic. Use the tables for R-134a. The work required by this compressor is Btu/lbm.