Homework Answers
Steady state in thermodynamics deals with particularly no change in energy and mass of the system under consideration with respect to time.
Total energy at the inlet to the control volume will be equal to the total energy at outlet.
m = 0 and
U = 0
Ans: (a) Vi = 10.186 m/s and Ve = 269.52 m/s
(b) Q = 44294.68 kJ/s = 44.294 MW
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3 Steady state open systems steam generator (20 marks) In the steadystate operation of a steam...
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1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first...
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1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first turbine stage at 6 MPa, 540 °C. Between the first and second stages, 45% of the steam is extracted at 500 kPa and diverted to a process heating load of 5 x 108 kl/h. Condensate exits the process heat exchanger at 450 kPa with specific enthalpy of 589.13 kl/kg and is mixed with liquid exiting the lower pressure pump at 450 kPa. The entire...
Problem 1: (10 pts) Steam enters an insulated turbine operating at steady state at a pressure of 2 MPa and a temperature of 400°C. A liquid-vapor water mixture exits the turbine with a quality of 0.9 and a pressure of 15 kPa. The power output of the turbine is 5 MW. (1) Identify the keywords and state their meaning (2 pts) (2) Determine the mass flow rate of steam required (8 pts)
thermo question
2. (20 points) Steam enters a turbine operating at steady state at 2 MPa, 360°C with a velocity of 100 m/s. Saturated vapor exits at 0.1 MPa and a velocity of 50 m/s. The elevation of the inlet is 3 m higher than at the exit. The mass flow rate of the steam is 15 kg's, and the power developed is 7 MW. Let g -9.81 m/s Determine (a) the area at the inlet, in m, and (b)...
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