PHY 2390 UN Kinetic Energy and Potential Energy Question

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Erraovb

Engineering

PHY 2390

University of Nairobi

PHY

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Q1. In an adiabatic turbine steam enters at 45 m/s, 7 MPa and 500°C as shown in Figure Q1. The pressure and velocity of the steam at exit are 100 kPa and 75 m/s, respectively. Considering power output of the turbine is 5 MW and isentropic efficiency is 77%, considering and stating the necessary assumptions determine, (a) the mass flow rate of steam through the turbine, (10 marks) (b) the temperature at the turbine exit, and (5 marks) (c) the rate of entropy generation during this process. (5 marks)
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Q1.
In an adiabatic turbine steam enters at 45 m/s, 7 MPa and 500°C as shown in Figure Q1. The
pressure and velocity of the steam at exit are 100 kPa and 75 m/s, respectively. Considering power
output of the turbine is 5 MW and isentropic efficiency is 77%, considering and stating the
necessary assumptions determine,
(a) the mass flow rate of steam through the turbine,
(10 marks)
(b) the temperature at the turbine exit, and
(5 marks)
(c) the rate of entropy generation during this process.
(5 marks)

Given: steam velocity (in) = 45...


Anonymous
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