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Pressure Drop in Square Duct Formula

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Pressure Drop in Square Duct due to friction is the decrease in the value of the pressure due to the influence of friction. Check FAQs

ΔP s = \frac{0.6 \cdot f \cdot L \cdot {V m}^{2}}{\frac{S^{2}}{2 \cdot (S + S)}}

ΔP_s - Pressure Drop in Square Duct?f - Friction Factor in Duct?L - Length of Duct?V_m - Mean Velocity of Air?S - Side?

Pressure Drop in Square Duct Example

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Here is how the Pressure Drop in Square Duct equation looks like with Values.

Here is how the Pressure Drop in Square Duct equation looks like with Units.

Here is how the Pressure Drop in Square Duct equation looks like.

0.32 = \frac{0.6 \cdot 0.8 \cdot 0.0654 \cdot 15^{2}}{\frac{9^{2}}{2 \cdot (9 + 9)}}

0.32mmAq = \frac{0.6 \cdot 0.8 \cdot 0.0654m \cdot {15m/s}^{2}}{\frac{{9m}^{2}}{2 \cdot (9m + 9m)}}

0.32 = \frac{0.6 \cdot 0.8 \cdot 0.0654 \cdot 15^{2}}{\frac{9^{2}}{2 \cdot (9 + 9)}}

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Pressure Drop in Square Duct Solution

Follow our step by step solution on how to calculate Pressure Drop in Square Duct?

FIRST Step Consider the formula

ΔP s = \frac{0.6 \cdot f \cdot L \cdot {V m}^{2}}{\frac{S^{2}}{2 \cdot (S + S)}}

Next Step Substitute values of Variables

∴

ΔP s = \frac{0.6 \cdot 0.8 \cdot 0.0654m \cdot {15m/s}^{2}}{\frac{{9m}^{2}}{2 \cdot (9m + 9m)}}

Next Step Prepare to Evaluate

∴

ΔP s = \frac{0.6 \cdot 0.8 \cdot 0.0654 \cdot 15^{2}}{\frac{9^{2}}{2 \cdot (9 + 9)}}

Next Step Evaluate

∴

ΔP s = 3.1392Pa

LAST Step Convert to Output's Unit

∴

ΔP s = 0.32mmAq

Pressure Drop in Square Duct Formula Elements

Variables

Pressure Drop in Square Duct

Pressure Drop in Square Duct due to friction is the decrease in the value of the pressure due to the influence of friction.

Symbol: ΔP_s

Measurement: PressureUnit: mmAq

Note: Value can be positive or negative.

Formulas to find Pressure Drop in Square Duct

Friction Factor in Duct

Friction Factor in Duct is dimensionless number depending upon the surface of the duct.

Symbol: f

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Friction Factor in Duct

Length of Duct

Length of Duct is defined as the measurement or extent of something from end to end of ducts.

Symbol: L

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Length of Duct

Mean Velocity of Air

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.

Symbol: V_m

Measurement: SpeedUnit: m/s

Note: Value should be greater than 0.

Formulas to find Mean Velocity of Air

Side

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.

Symbol: S

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Side

Other formulas in Pressure category

Go Dynamic Pressure Loss

P d = C \cdot 0.6 \cdot V^{2}

Go Dynamic Loss Coefficient given Dynamic Pressure Loss

C = \frac{P d}{0.6 \cdot V^{2}}

Go Dynamic Loss Coefficient given Equivalent Additional Length

C = \frac{f \cdot L e}{m}

Go Pressure Loss due to Sudden Enlargement

ΔP se = 0.6 \cdot {(V 1 - V 2)}^{2}

How to Evaluate Pressure Drop in Square Duct?

Pressure Drop in Square Duct evaluator uses Pressure Drop in Square Duct = (0.6*Friction Factor in Duct*Length of Duct*Mean Velocity of Air^2)/((Side^2)/(2*(Side+Side))) to evaluate the Pressure Drop in Square Duct, Pressure Drop in Square Duct formula is defined as a measure of the loss of pressure that occurs in a square duct due to frictional forces, which is an important parameter in designing and optimizing duct systems, particularly in heating, ventilation, and air conditioning applications. Pressure Drop in Square Duct is denoted by ΔP_s symbol.

How to evaluate Pressure Drop in Square Duct using this online evaluator? To use this online evaluator for Pressure Drop in Square Duct, enter Friction Factor in Duct (f), Length of Duct (L), Mean Velocity of Air (V_m) & Side (S) and hit the calculate button.

FAQs on Pressure Drop in Square Duct

What is the formula to find Pressure Drop in Square Duct?

The formula of Pressure Drop in Square Duct is expressed as Pressure Drop in Square Duct = (0.6*Friction Factor in Duct*Length of Duct*Mean Velocity of Air^2)/((Side^2)/(2*(Side+Side))). Here is an example- 0.03262 = (0.6*0.8*0.0654*15^2)/((9^2)/(2*(9+9))).

How to calculate Pressure Drop in Square Duct?

With Friction Factor in Duct (f), Length of Duct (L), Mean Velocity of Air (V_m) & Side (S) we can find Pressure Drop in Square Duct using the formula - Pressure Drop in Square Duct = (0.6*Friction Factor in Duct*Length of Duct*Mean Velocity of Air^2)/((Side^2)/(2*(Side+Side))).

Can the Pressure Drop in Square Duct be negative?

Yes, the Pressure Drop in Square Duct, measured in Pressure can be negative.

Which unit is used to measure Pressure Drop in Square Duct?

Pressure Drop in Square Duct is usually measured using the Millimeter Water (4 °C)[mmAq] for Pressure. Pascal[mmAq], Kilopascal[mmAq], Bar[mmAq] are the few other units in which Pressure Drop in Square Duct can be measured.

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Pressure Drop in Square Duct Formula

Pressure Drop in Square Duct Example

Pressure Drop in Square Duct Solution

Pressure Drop in Square Duct Formula Elements

Other formulas in Pressure category

How to Evaluate Pressure Drop in Square Duct?

FAQs on Pressure Drop in Square Duct

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