1. A centrifugal fan supplies 4.7m3 / s of air at a total static pressure of 325Pa. If the fan efficiency is% 60 and rotates at a speed of 950rpm and supplies air with a velocity of 12m / s, determine the fan total pressure, air power, and fan power? Ans. 411 Pa

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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1. A centrifugal fan supplies 4.7m3 / s of air at a total static pressure of 325Pa. If the fan efficiency is% 60 and rotates at a speed of 950rpm and supplies air with a velocity of 12m / s, determine the fan total pressure, air power, and fan power? Ans. 411 Pa 2. If the efficiency of the fan given in Problem - 1 becomes 70%, determine the power required for running it. Then, find the power required and airflow rate supplied if the fan speed is increased to 1050rpm. Also, assume that the fan static pressure does not change and determine the air velocity out of the fan. Ans. 4.6kW, 6.21kW, 5.195m3 / s, 17.2m /

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