Blowers are used in wastewater treatment plants to assist microorganisms in degrading pollutants. The impeller of a centrifugal blower has a radius of 15 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 800 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. Blowers are used in wastewater treatment plants to assist microorganisms in degrading pollutants. Theimpeller of a centrifugal blower has a radius of 15 cm and a blade width of 6.1 cm at the inlet, and a radiusof 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 tobe equal to the impeller velocity at respective locations, determine the volumetric flow rate of air when therotational speed of the shaft is 800 rpm and the power consumption of the blower is 120 W. Also determinethe normal components of velocity at the inlet and outlet of the impeller.OutletInlet

Data given: At inlet Radius (R1)= 15 cm = 0.15 m Blade width (B1) = 6.1 cm = 0.061 m At outlet…

Answered: Blowers are used in wastewater…

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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Blowers are used in wastewater treatment plants to assist microorganisms in degrading pollutants. The impeller of a centrifugal blower has a radius of 15 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 800 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.

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