A fan with 22-in-diameter blades moves 1800 cfm (cubic feet per minute) of air at 70°F at sea level. Determine the following: The force required to hold the fan. The minimum power input required for the fan Choose a control volume sufficiently large to contain the fan, with the inlet sufficiently far upstream so that the gage pressure at the inlet is nearly zero. Assume air approaches the fan through a large area with negligible velocity and air exits the fan with a uniform velocity at atmospheric pressure through an imaginary cylinder whose diameter is the fan blade diameter.
A fan with 22-in-diameter blades moves 1800 cfm (cubic feet per minute) of air at 70°F at sea level. Determine the following: The force required to hold the fan. The minimum power input required for the fan Choose a control volume sufficiently large to contain the fan, with the inlet sufficiently far upstream so that the gage pressure at the inlet is nearly zero. Assume air approaches the fan through a large area with negligible velocity and air exits the fan with a uniform velocity at atmospheric pressure through an imaginary cylinder whose diameter is the fan blade diameter.
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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A fan with 22-in-diameter blades moves 1800 cfm (cubic feet per minute) of air at 70°F at sea level. Determine the following:
- The force required to hold the fan.
- The minimum power input required for the fan
Choose a control volume sufficiently large to contain the fan, with the inlet sufficiently far upstream so that the gage pressure at the inlet is nearly zero. Assume air approaches the fan through a large area with negligible velocity and air exits the fan with a uniform velocity at atmospheric pressure through an imaginary cylinder whose diameter is the fan blade diameter.
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