Question

Problem 1) Steam at 10 bar and 330°C is fed to an adiabatic turbine at a mass flow rate of m = 5kg /s • . The output stream is saturated steam at 1.1 bar. The inlet steam flows through a 15 cm diameter pipe and the exit steam discharges through a 20 cm diameter pipe. a) Calculate the velocity of the input and output streams in m/s. b) The power generated by the turbine in kW.

Answer #1

Question 1 A steam turbine drives an electric generator (so
the turbine delivers shaft work). The inlet steam flows through a
12.0 cm diameter pipe to the turbine at the rate of 2.50 kg/s at
600.0 °C and 10.0 bar absolute. The exit steam discharges through a
25.0 cm diameter pipe at 400.0 °C and 1.00 bar absolute. The
turbine is adiabatic, and the process is at steady state. Neglect
the potential energy effects.
̇
(a) Calculate ∆Ek term for...

Steam enters an adiabatic turbine at 140 bar and 560 C and
leaves at 10 kPa. At the exit, the pressure and quality are 50 KPa
and .90, respectively. Determine the power produced (kW) by the
turbine if the mass flow rate is 1.63 kg/s.

A horizontal steady-state turbine is being designed to serve as
an energy source for a small electrical generator. (assume its
adiabatic and frictionless) The power required from the turbine is
1037 kW. The inlet to the turbine is steam at T1 = 600 0 C and P1 =
10 bar, with a mass flow rate of 2.5 kg/s. The inlet pipe is 10 cm
in diameter. The conditions at the turbine exit are T2 = 400 0 C
and P2...

Steam flows steadily through an adiabatic turbine. The inlet
conditions are: 20 MPa, 500°C, 90 m/s and the exit conditions are
20 kPa, 95% quality, and 60 m/s. The mass flow rate of the steam is
15 kg/s. Find:
a) The change in kinetic energy of the steam, (5 points)
b) The power output, and (5 points)
c) The turbine inlet area. (5 points)

P2) Steam flows steadily through an adiabatic turbine in a power
plant. The inlet conditions of the steam are 6 MPa, 400 °C and 119
cm2 . The exit conditions are 40 kPa, 92 percent quality, 50 m/s
and 20 kg/s. Determine the power output.

A steam turbine has inlet steam pressure p1 = 1.4 MPa
absolute. Inlet steam temperature is T1 = 400
oC. This corresponds to inlet enthalpy per unit mass of
h1 = 3121 kJ/kg. Exit pressure of the steam is p2 = 101
kPa absolute. Exit steam temperature is T2 = 100
oC. This corresponds to exit enthalpy per unit mass of
h2 = 2676 kJ/kg. Inlet speed of the steam is
V1 = 15 m/s and exit speed is V2...

Steam goes through an adiabatic turbine at 2 kg/s. The power
created by the turbine is 1523.5 kW. Determine the isentropic
efficiency of the turbine.
Entrance conditions: 3 MPa and 400°C Exit conditions: 30 kPa

Steam goes through an adiabatic turbine at 2 kg/s. The power
created by the turbine is 1523.5 kW. Determine the isentropic
efficiency of the turbine. Entrance conditions: 3 MPa and 400°C
Exit conditions: 30 kPa

Consider an adiabatic turbine. At steady mass flow rate of 10
kg/s, steam enter the turbine at 4.5 MPa, 600°c and 85 m/s and
leaves the turbine at 40 kPa, quality of 0.8 and 50 m/s. Determine
:
a) the power output
b) the turbine inlet area

Steam enters an adiabatic turbine at 7 MPa, 700 °C and
80 m/s and leaves at 50 kPa, 150 °C, and 140 m/s. If the power
output of the turbine is 6 MW, determine:
i) Mass
flowrate of the steam flowing through the
turbine.
ii) The
isentropic efficiency of the turbine.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 19 minutes ago

asked 23 minutes ago

asked 31 minutes ago

asked 55 minutes ago

asked 57 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago