Water is pumped from a lower chamber to a higher chamber by a pump driven by a 55 kW electric motor with an efficiency of 85%. The free surface of the upper chamber (open surface to the atmosphere) is 75 m higher than the free surface of the chamber below. The free surface velocities are negligible. The magnitude of the gravitational acceleration is given as 9.81 m/s^2. Since the mass flow rate of the water is 50 kg/s, calculate the mechanical power loss in kW during the upward transfer of the water. 1.665 9.96 18.21 3.21 12.45 5.70

Water is pumped from a lower chamber to a higher chamber by a pump driven by a 55 kW electric motor with an efficiency of 85%. The free surface of the upper chamber (open surface to the atmosphere) is 75 m higher than the free surface of the chamber below. The free surface velocities are negligible. The magnitude of the gravitational acceleration is given as 9.81 m/s^2. Since the mass flow rate of the water is 50 kg/s, calculate the mechanical power loss in kW during the upward transfer of the water. 1.665 9.96 18.21 3.21 12.45 5.70

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.32P

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