Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1 Calculator

✖Velocity of Air at section 1 is defined as the rate of air movement measured in distance traveled relative to time elapsed at section 1.ⓘ Velocity of Air at Section 1 [V₁]			+10% -10%
✖Pressure Loss Coefficient is defined the ratio of actual loss of pressure to loss for sudden enlargement/contraction.ⓘ Pressure Loss Coefficient [C_r]			+10% -10%
✖Pressure Loss Coefficient at 1 is the coefficient of pressure losses caused by a change in air direction from the elbow, offset, or takeoffs.ⓘ Pressure Loss Coefficient at 1 [C₁]			+10% -10%

✖Pressure Loss due to Gradual Contraction due to friction is the decrease in the value of the pressure due to the influence of friction.ⓘ Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1 [ΔP_gc]

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Formula

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Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1

Formula

ΔP gc = 0.6 \cdot {V 1}^{2} \cdot C r \cdot C 1

Example

1.981653 mmAq = 0.6 \cdot {17 m/s}^{2} \cdot 0.4 \cdot 0.280277

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Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1 Solution

STEP 0: Pre-Calculation Summary

Formula Used

Pressure Loss due to Gradual Contraction = 0.6*Velocity of Air at Section 1^2*Pressure Loss Coefficient*Pressure Loss Coefficient at 1
ΔP_gc = 0.6*V₁^2*C_r*C₁
This formula uses 4 Variables

Variables Used

Pressure Loss due to Gradual Contraction - (Measured in Pascal) - Pressure Loss due to Gradual Contraction due to friction is the decrease in the value of the pressure due to the influence of friction.
Velocity of Air at Section 1 - (Measured in Meter per Second) - Velocity of Air at section 1 is defined as the rate of air movement measured in distance traveled relative to time elapsed at section 1.
Pressure Loss Coefficient - Pressure Loss Coefficient is defined the ratio of actual loss of pressure to loss for sudden enlargement/contraction.
Pressure Loss Coefficient at 1 - Pressure Loss Coefficient at 1 is the coefficient of pressure losses caused by a change in air direction from the elbow, offset, or takeoffs.

STEP 1: Convert Input(s) to Base Unit

Velocity of Air at Section 1: 17 Meter per Second --> 17 Meter per Second No Conversion Required
Pressure Loss Coefficient: 0.4 --> No Conversion Required
Pressure Loss Coefficient at 1: 0.280277 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

ΔP_gc = 0.6*V₁^2*C_r*C₁ --> 0.6*17^2*0.4*0.280277

Evaluating ... ...

ΔP_gc = 19.44001272

STEP 3: Convert Result to Output's Unit

19.44001272 Pascal -->1.98165267278287 Millimeter Water (4 °C) (Check conversion here)

FINAL ANSWER

1.98165267278287 ≈ 1.981653 Millimeter Water (4 °C) <-- Pressure Loss due to Gradual Contraction

(Calculation completed in 00.004 seconds)

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Home » Physics » Refrigeration and Air Conditioning » Ducts » Mechanical » Pressure » Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1

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Created by Abhishek Dharmendra Bansile

Vishwakarma Institute of Information Technology, Pune (VIIT Pune), Pune

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< Pressure Calculators

Dynamic Loss Coefficient given Equivalent Additional Length

Go Dynamic Loss Coefficient = (Friction Factor in Duct*Equivalent Additional Length)/Hydraulic Mean Depth

Pressure Loss due to Sudden Enlargement

Go Pressure Loss due to Sudden Enlargement = 0.6*(Velocity of Air at Section 1-Velocity of Air at Section 2)^2

Dynamic Loss Coefficient given Dynamic Pressure Loss

Go Dynamic Loss Coefficient = Dynamic Pressure Loss/(0.6*Velocity of Air^2)

Dynamic Pressure Loss

Go Dynamic Pressure Loss = Dynamic Loss Coefficient*0.6*Velocity of Air^2

Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1 Formula

Pressure Loss due to Gradual Contraction = 0.6*Velocity of Air at Section 1^2*Pressure Loss Coefficient*Pressure Loss Coefficient at 1
ΔP_gc = 0.6*V₁^2*C_r*C₁

Causes of Dynamic Pressure loss

1. Change in air direction from elbows, offsets, and takeoffs
2. Restrictions or obstructions in the air stream - in/outlet fans, dampers, filters, and coils
3. Air velocity changes due to changes in duct sizes

How to Calculate Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1?

Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1 calculator uses Pressure Loss due to Gradual Contraction = 0.6*Velocity of Air at Section 1^2*Pressure Loss Coefficient*Pressure Loss Coefficient at 1 to calculate the Pressure Loss due to Gradual Contraction, Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1 formula is defined as a measure of the decrease in pressure of a fluid flowing through a gradually contracting pipe or tube, which is influenced by the pressure loss coefficient and the velocity of the fluid at a specific section. Pressure Loss due to Gradual Contraction is denoted by ΔP_gc symbol.

How to calculate Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1 using this online calculator? To use this online calculator for Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1, enter Velocity of Air at Section 1 (V₁), Pressure Loss Coefficient (C_r) & Pressure Loss Coefficient at 1 (C₁) and hit the calculate button. Here is how the Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1 calculation can be explained with given input values -> 0.202003 = 0.6*17^2*0.4*0.280277.

FAQ

What is Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1?

Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1 formula is defined as a measure of the decrease in pressure of a fluid flowing through a gradually contracting pipe or tube, which is influenced by the pressure loss coefficient and the velocity of the fluid at a specific section and is represented as ΔP_gc = 0.6*V₁^2*C_r*C₁ or Pressure Loss due to Gradual Contraction = 0.6*Velocity of Air at Section 1^2*Pressure Loss Coefficient*Pressure Loss Coefficient at 1. Velocity of Air at section 1 is defined as the rate of air movement measured in distance traveled relative to time elapsed at section 1, Pressure Loss Coefficient is defined the ratio of actual loss of pressure to loss for sudden enlargement/contraction & Pressure Loss Coefficient at 1 is the coefficient of pressure losses caused by a change in air direction from the elbow, offset, or takeoffs.

How to calculate Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1?

Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1 formula is defined as a measure of the decrease in pressure of a fluid flowing through a gradually contracting pipe or tube, which is influenced by the pressure loss coefficient and the velocity of the fluid at a specific section is calculated using Pressure Loss due to Gradual Contraction = 0.6*Velocity of Air at Section 1^2*Pressure Loss Coefficient*Pressure Loss Coefficient at 1. To calculate Pressure Loss due to Gradual Contraction given Pressure Loss Coefficient at Section 1, you need Velocity of Air at Section 1 (V₁), Pressure Loss Coefficient (C_r) & Pressure Loss Coefficient at 1 (C₁). With our tool, you need to enter the respective value for Velocity of Air at Section 1, Pressure Loss Coefficient & Pressure Loss Coefficient at 1 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 Loss due to Gradual Contraction?

In this formula, Pressure Loss due to Gradual Contraction uses Velocity of Air at Section 1, Pressure Loss Coefficient & Pressure Loss Coefficient at 1. We can use 1 other way(s) to calculate the same, which is/are as follows -

Pressure Loss due to Gradual Contraction = 0.6*Velocity of Air at Section 2^2*Pressure Loss Coefficient*Pressure Loss Coefficient at 2

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