FORMULA SHEET - Homestead

Calculate the air velocity as well as the volume (CFM). A pitot tube manometer reads 0.09 inches water column. Velocity= 4005 x Square root of velocity press 4005 x Square root of 0.09 1201 fpm Area = Pie x R²÷ 144 3.14 x 7.5² ÷ 144 = 1.23 SQ Feet Area = Pie x R² 3.14 x 7.5² = 176.625 SQ Inches CFM= Area (SQ. ................
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