Say Reynolds number as 4500. Velocity Pressure Method Calculation Sheet sheet , method , Velocity Pressure Method Calculation Sheet 1. Transport Velocity V Chap 10 fpm 4 Maximum Duct Diameter ( D= ( ( 4* 144* Q) / ( pi* V) sheet velocity ). 00 Resultant Velocity Pressure " wg PERTINENT EQUATIONS: Branch Entry Loss Factors Angle ( * calculation ) calculation Factor Elbow Loss Factors: 10. Calculate the pressure loss of the duct fitting in a calculation 600mm W x 200mm H duct with a radius of sheet 600mm velocity and a 90° Bend angle. velocity 0 D Q Q V H f velocity = = calculation FanTP SP SP VP VP method method out in out in = - + pressure - SP SP VP V 3 1 3 = - - ( Pr). Cumulative Static Pressure Governing Static Pressure pressure ( at TO sheet location) Corrected Volumetric Flowrate Corrected Velocity Corrected Velocity Pressure Resultant Velocity Pressure PERTINENT EQUATIONS: Branch Entry Loss Factors sheet Angle ( * ) Factor Elbow Loss pressure Factors: 60* elbow = 2/ 3 loss 45oelbow= 1/ 2 loss 30* elbow= 1/ 3 velocity method loss R/ D 90oelbow Other Information. = Upstream velocity of fitting H = Height of the duct W = Width of the duct R = Radius of the bend θ pressure = Angle of the radius. 00 Governing Static Pressure method ( calculation at TO location) pressure " wg- 3.
VP Q Q VP Q Q VP r = FSP SP SP sheet VP outlet inlet inlet = - - 066. Velocity pressure method calculation sheet. 00 Corrected Velocity fpm 41. Cumulative Static Pressure " wg 3. Method for the calculation of velocity rate of flow viscous drag in arteries when the pressure method gradient is known.
ft 7 Actual Duct Velocity fpm 2 8 Duct Velocity Pres.
Start by decreasing duct diameter by ½ or 1 inch. This will result in a higher velocity ( and velocity pressure), hence increasing the hood, duct, elbow, and other losses in that branch. Use the ACGIH calc sheet. Velocity Pressure Method Calculation Sheet. Corrected Volumetric Flowrate Corrected Velocity Corrected Velocity Pressure Resultant Velocity Pressure " wg " wg " wg.
velocity pressure method calculation sheet
XLS] Velocity Pressure Method Calculation viewTitle Velocity Pressure Method Calculation Sheet Subject Industrial Ventilation Author Pam Barnhart Created Date 3/ 2/ 1998 3: 10: 13 AM Other titles With_ Eqns Template Sheet3 Sheet4 Sheet5 Sheet6 Sheet7 Sheet8 Sheet9 Sheet10. These handy, time- saving forms are designed to simplify industrial ventilation parameter calculations.