Data measured during tests of a centrifugal pump at 2750 rpm are Parameter Inlet, Section O Outlet, Section 2 Gage pressure, p (kPa) Elevation above datum, z (m) 120 500 9 2.5 Average speed of flow, V (m/s) 2.5 3.5 The flow rate is 15 cu.m./hr. and the torque applied to the pump shaft is 85N.m. Evaluate the total dynamic heads at the pump inlet and outlet, the hydraulic power input to the fluid, and the pump efficiency. Specify the electric motor size needed to drive the pump. If the electric motor efficiency is 85%, calculate the electric power requirement

Data measured during tests of a centrifugal pump at 2750 rpm are Parameter Inlet, Section O Outlet, Section 2 Gage pressure, p (kPa) Elevation above datum, z (m) 120 500 9 2.5 Average speed of flow, V (m/s) 2.5 3.5 The flow rate is 15 cu.m./hr. and the torque applied to the pump shaft is 85N.m. Evaluate the total dynamic heads at the pump inlet and outlet, the hydraulic power input to the fluid, and the pump efficiency. Specify the electric motor size needed to drive the pump. If the electric motor efficiency is 85%, calculate the electric power requirement

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?

Question

Data measured during tests of a centrifugal pump at 2750 rpm are
Parameter
Inlet, Section
Outlet, Section (2)
Gage pressure, p (kPa)
Elevation above datum, z (m)
120
500
2.5
Average speed of flow, V (m/s)
2.5
3.5
The flow rate is 15 cu.m./hr. and the torque applied to the pump shaft is 85N.m. Evaluate the total dynamic heads at the pump inlet and outlet, the hydraulic
power input to the fluid, and the pump efficiency. Specify the electric motor size needed to drive the pump. If the electric motor efficiency is 85%, calculate the
electric power requirement

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