Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz= 5 m higher than the pump, where m˙=50 kg/s. Steady-state operating data for the turbine and pump are labeled on the figure. Heat transfer from the water to its surroundings occurs at a rate of 2 kW. For the turbine, heat transfer with the surroundings and potential energy effects are negligible. Kinetic energy effects at all numbered states can be ignored.
Determine:
(a) the magnitude of the pump power, in kW.
(b) the mass flow rate of steam, in kg/s, that flows through the turbine.
Transcribed Image Text:h2 417.69 kJ/kg
HMixing chamber
ev 2kW
Steam
P3 30 bar
T3 400°C
dz
Turbine
Pump
P4=5 bar
4
T=180°C
Saturated liquid water
m, Pi1 bar
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