Consider a centrifugal blower that has a radius of 20 cm and a blade width of 9 cm at the impeller inlet, and a radius of 45 cm and a blade width of 6 cm at the outlet. Assuming that air enters the impeller in the radial direction and exits at an angle of 60° from the radial direction, find the volumetric flow at a rotational speed of 700 rpm and power consumption of the blower is 150 W. Take the density of air to be 1.22 kg/m³.

Consider a centrifugal blower that has a radius of 20 cm and a blade width of 9 cm at the impeller inlet, and a radius of 45 cm and a blade width of 6 cm at the outlet. Assuming that air enters the impeller in the radial direction and exits at an angle of 60° from the radial direction, find the volumetric flow at a rotational speed of 700 rpm and power consumption of the blower is 150 W. Take the density of air to be 1.22 kg/m³.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

Consider a centrifugal blower that has a radius of 20 cm and a blade width of 9 cm at the impeller inlet, and
a radius of 45 cm and a blade width of 6 cm at the outlet. Assuming that air enters the impeller in the radial
direction and exits at an angle of 60° from the radial direction, find the volumetric flow at a rotational speed
of 700 rpm and power consumption of the blower is 150 W. Take the density of air to be 1.22 kg/m³.
Useful equations
V₁,t = V₁ntana₁
V2,t = V2,n tana₂
V₁=
2πr₂b₁
V2.n =
2πr₂b₂
= m(r₂V2t -r₁V₁)
Tshaft = 1
Fan Wheel-
Gas
In
Housing
Gas Out

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