Example 10-1 Centrifugal pump

Example 10-1 Centrifugal pump - assumes the efficiency = 1....

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Example 10.1 Fox and McDonald
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A centrifugal pump is used to pump 150 gpm of water. The water enters the impeller axially through a 1.25 inch diameter inlet. The inlet velocity is axial and uniform. The impeller outlet diameter is 4 inches. Flow leaves the impeller at 10 ft/s relative to the blades, which are radial at the exit. The impeller speed is 3450 rpm. Determine (a) the impeller exit width b2 , (b) the torque input, (c) the power predicted by the Euler turbine equation, and (d) the head rise predicted across the pump.
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Although not explicitly stated in the problem, the Euler Turbomachine Equation
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Unformatted text preview: assumes the efficiency = 1. The rate of work done on a turbomachine is referred to by several terms which mean the same thing. When working with pumps, we usually call the shaft power the brake horsepower or bhp . This is the rate of work done on a turbomachine rotor. Some books call the bhp mechanical power, and use the notation . That notation is used in this example. m W & (a) Determine the impeller exit width b2 (b) Find the torque input (c) Find the power predicted by the Euler turbine equation. (d) the head rise predicted across the pump....
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This note was uploaded on 02/14/2012 for the course EML 4034c taught by Professor Abbitt during the Spring '12 term at University of Florida.

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Example 10-1 Centrifugal pump - assumes the efficiency = 1....

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