Pressure Drop in Square Duct Solution

STEP 0: Pre-Calculation Summary
Formula Used
Pressure Drop = (0.6*Friction Factor in Duct*Length of Duct*Mean Velocity of Air^2)/((Side^2)/(2*(Side+Side)))
Pf = (0.6*f*L*Vmean^2)/((S^2)/(2*(S+S)))
This formula uses 5 Variables
Variables Used
Pressure Drop - (Measured in Pascal) - Pressure drop due to friction is the decrease in the value of the pressure due to the influence of friction.
Friction Factor in Duct - Friction Factor in Duct is dimensionless number depending upon the surface of the duct.
Length of Duct - (Measured in Meter) - Length of Duct is defined as the measurement or extent of something from end to end of ducts.
Mean Velocity of Air - (Measured in Meter per Second) - Mean Velocity of Air is defined as the time average of the velocity of a fluid at a fixed point, over a somewhat arbitrary time interval T counted from some fixed time t0.
Side - (Measured in Meter) - The side is an upright or sloping surface of a structure or object that is not the top or bottom and generally not the front or back.
STEP 1: Convert Input(s) to Base Unit
Friction Factor in Duct: 0.8 --> No Conversion Required
Length of Duct: 19 Meter --> 19 Meter No Conversion Required
Mean Velocity of Air: 15 Meter per Second --> 15 Meter per Second No Conversion Required
Side: 9 Meter --> 9 Meter No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Pf = (0.6*f*L*Vmean^2)/((S^2)/(2*(S+S))) --> (0.6*0.8*19*15^2)/((9^2)/(2*(9+9)))
Evaluating ... ...
Pf = 912
STEP 3: Convert Result to Output's Unit
912 Pascal -->92.9663608562691 Millimeter Water (4 °C) (Check conversion here)
FINAL ANSWER
92.9663608562691 92.96636 Millimeter Water (4 °C) <-- Pressure Drop
(Calculation completed in 00.004 seconds)

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5 Pressure Loss in Ducts Calculators

Length of Duct given Pressure Loss due to Friction
Go Length of Duct = (2*Pressure Loss due to Friction in Ducts*Hydraulic Mean Depth)/(Friction Factor in Duct*Air Density*Mean Velocity of Air^2)
Pressure Loss due to Friction in Ducts
Go Pressure Loss due to Friction in Ducts = (Friction Factor in Duct*Length of Duct*Air Density*Mean Velocity of Air^2)/(2*Hydraulic Mean Depth)
Pressure Drop in Square Duct
Go Pressure Drop = (0.6*Friction Factor in Duct*Length of Duct*Mean Velocity of Air^2)/((Side^2)/(2*(Side+Side)))
Pressure Drop in Circular Duct
Go Pressure Drop = (0.6*Friction Factor in Duct*Length of Duct*Mean Velocity of Air^2)/(Diameter of Circular Duct/4)
Total Pressure required at Inlet to Duct
Go Total Pressure Required = Pressure Loss due to Friction in Ducts+Velocity Pressure in Ducts

Pressure Drop in Square Duct Formula

Pressure Drop = (0.6*Friction Factor in Duct*Length of Duct*Mean Velocity of Air^2)/((Side^2)/(2*(Side+Side)))
Pf = (0.6*f*L*Vmean^2)/((S^2)/(2*(S+S)))

Pressure drop in ducts

Pressure loss in ductwork has three components, frictional losses along duct walls and dynamic losses in fittings, and component losses in duct-mounted equipment. Due to physical items with known pressure drops, such as hoods, filters, louvers, or dampers.

How to Calculate Pressure Drop in Square Duct?

Pressure Drop in Square Duct calculator uses Pressure Drop = (0.6*Friction Factor in Duct*Length of Duct*Mean Velocity of Air^2)/((Side^2)/(2*(Side+Side))) to calculate the Pressure Drop, The Pressure drop in square duct formula is defined as the pressure drops in the direction of flow, the pressure drop is due to Fluid friction or Momentum change due to change of direction and/or velocity in square ducts. Pressure Drop is denoted by Pf symbol.

How to calculate Pressure Drop in Square Duct using this online calculator? To use this online calculator for Pressure Drop in Square Duct, enter Friction Factor in Duct (f), Length of Duct (L), Mean Velocity of Air (Vmean) & Side (S) and hit the calculate button. Here is how the Pressure Drop in Square Duct calculation can be explained with given input values -> 9.476693 = (0.6*0.8*19*15^2)/((9^2)/(2*(9+9))).

FAQ

What is Pressure Drop in Square Duct?
The Pressure drop in square duct formula is defined as the pressure drops in the direction of flow, the pressure drop is due to Fluid friction or Momentum change due to change of direction and/or velocity in square ducts and is represented as Pf = (0.6*f*L*Vmean^2)/((S^2)/(2*(S+S))) or Pressure Drop = (0.6*Friction Factor in Duct*Length of Duct*Mean Velocity of Air^2)/((Side^2)/(2*(Side+Side))). Friction Factor in Duct is dimensionless number depending upon the surface of the duct, Length of Duct is defined as the measurement or extent of something from end to end of ducts, Mean Velocity of Air is defined as the time average of the velocity of a fluid at a fixed point, over a somewhat arbitrary time interval T counted from some fixed time t0 & The side is an upright or sloping surface of a structure or object that is not the top or bottom and generally not the front or back.
How to calculate Pressure Drop in Square Duct?
The Pressure drop in square duct formula is defined as the pressure drops in the direction of flow, the pressure drop is due to Fluid friction or Momentum change due to change of direction and/or velocity in square ducts is calculated using Pressure Drop = (0.6*Friction Factor in Duct*Length of Duct*Mean Velocity of Air^2)/((Side^2)/(2*(Side+Side))). To calculate Pressure Drop in Square Duct, you need Friction Factor in Duct (f), Length of Duct (L), Mean Velocity of Air (Vmean) & Side (S). With our tool, you need to enter the respective value for Friction Factor in Duct, Length of Duct, Mean Velocity of Air & Side and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Pressure Drop?
In this formula, Pressure Drop uses Friction Factor in Duct, Length of Duct, Mean Velocity of Air & Side. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Pressure Drop = (0.6*Friction Factor in Duct*Length of Duct*Mean Velocity of Air^2)/(Diameter of Circular Duct/4)
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