An axial-flow blower is used for a wind tunnel that has a test section measuring 60 em

Chapter 14, Problem 14.21

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An axial-flow blower is used for a wind tunnel that has a test section measuring 60 em by 60 em and is capable of airspeeds up to 40 m/s. If the blower is to operate at maximum efficiency at the highest speed and if the rotational speed of the blower is 2000 rpm at this condition, what are the diameter of the blower and the power required? Assume that the blower has the characteristics shown in Fig. 14.7 on p. 524 of 14.2. Assume p = 1.2 kg/m3

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