Water at 20°C is pumped at a constant rate of 9 m3/h from a large reservoir resting on the floor to the open top of an experimental absorption tower. The point of discharge is 5 m above the floor, and friction losses in the 50-mm pipe from the reservoir to the tower amount to 2.5 J/kg. At what height in the reservoir must the water level be kept if the pump can deliver only 0.1 kW? a. The pump is to be rated at 0.1 kW or 0.1 kJ/s. How much shat work is being supplied by the pump? (in J/kg) b. The value of alpha we should use for the kinetic energy term is? c. Determine the average velocity of the water at the starting point (on the surface of the reservoir)
Water at 20°C is pumped at a constant rate of 9 m3/h from a large reservoir resting on the floor to the open top of an experimental absorption tower. The point of discharge is 5 m above the floor, and friction losses in the 50-mm pipe from the reservoir to the tower amount to 2.5 J/kg. At what height in the reservoir must the water level be kept if the pump can deliver only 0.1 kW? a. The pump is to be rated at 0.1 kW or 0.1 kJ/s. How much shat work is being supplied by the pump? (in J/kg) b. The value of alpha we should use for the kinetic energy term is? c. Determine the average velocity of the water at the starting point (on the surface of the reservoir)
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Water at 20°C is pumped at a constant rate of 9 m3/h from a large reservoir resting on the floor to the open top of an experimental absorption tower. The point of discharge is 5 m above the floor, and friction losses in the 50-mm pipe from the reservoir to the tower amount to 2.5 J/kg. At what height in the reservoir must the water level be kept if the pump can deliver only 0.1 kW?
a. The pump is to be rated at 0.1 kW or 0.1 kJ/s. How much shat work is being supplied by the pump? (in J/kg)
b. The value of alpha we should use for the kinetic energy term is?
c. Determine the average velocity of the water at the starting point (on the surface of the reservoir)
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