4. The impeller of a centrifugal blower has a radius of 18 cm and a blade width of 6.1 cm at the inlet, and a radius of 30 cm and a blade width of 3.4 cm at the outlet. The blower delivers atmospheric air at 20°C and 95 kPa. Disregarding any losses and assuming the tangential components of air velocity at the inlet and the outlet to be equal to the impeller velocity at respective locations, determine the volumetric flow rate of air when the rotational speed of the shaft is 900 rpm and the power consumption of the blower is 120 W. Also determine the normal components of velocity at the inlet and outlet of the impeller. Outlet Inlet

4. The impeller of a centrifugal blower has a radius of 18 cm and a blade width of 6.1 cm at the inlet, and a radius of 30 cm and a blade width of 3.4 cm at the outlet. The blower delivers atmospheric air at 20°C and 95 kPa. Disregarding any losses and assuming the tangential components of air velocity at the inlet and the outlet to be equal to the impeller velocity at respective locations, determine the volumetric flow rate of air when the rotational speed of the shaft is 900 rpm and the power consumption of the blower is 120 W. Also determine the normal components of velocity at the inlet and outlet of the impeller. Outlet Inlet

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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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

4. The impeller of a centrifugal blower has a radius of 18 cm and a blade width
of 6.1 cm at the inlet, and a radius of 30 cm and a blade width of 3.4 cm at the
outlet. The blower delivers atmospheric air at 20°C and 95 kPa. Disregarding
any losses and assuming the tangential components of air velocity at the inlet
and the outlet to be equal to the impeller velocity at respective locations,
determine the volumetric flow rate of air when the rotational speed of the
2
shaft is 900 rpm and the power consumption of the blower is 120 W. Also
determine the normal components of velocity at the inlet and outlet of the
impeller.
Outlet
Inlet

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