Dynamic Pressure Loss Calculator

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Ducts

Air Conditioning Systems

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Air Refrigeration Systems

Enthalpy of Saturated Air

Heat Transfer

Psychrometry

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Thermodynamics Factor

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Pressure

Continuity Equation for Ducts

Friction Factor

Parameters of Ducts

Pressure Loss in Ducts

✖Dynamic Loss Coefficient is defined as the value which is experimentally determined to calculate the dynamic pressure loss.ⓘ Dynamic Loss Coefficient [C]			+10% -10%
✖The Velocity of Air is defined as the rate of air movement measured in distance traveled relative to the time elapsed.ⓘ Velocity of Air [V]			+10% -10%

✖Dynamic Pressure Loss is defined as the loss of pressure is due to the loss of the energy of the fluid in overcoming such dynamic forces resisting the changes.ⓘ Dynamic Pressure Loss [P_d]

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Formula

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Dynamic Pressure Loss

Formula

`"P"_{"d"} = "C"*0.6*"V"^2`

Example

`"1.498471mmAq"="0.02"*0.6*("35m/s")^2`

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Dynamic Pressure Loss Solution

STEP 0: Pre-Calculation Summary

Formula Used

Dynamic Pressure Loss = Dynamic Loss Coefficient*0.6*Velocity of Air^2
P_d = C*0.6*V^2
This formula uses 3 Variables

Variables Used

Dynamic Pressure Loss - (Measured in Pascal) - Dynamic Pressure Loss is defined as the loss of pressure is due to the loss of the energy of the fluid in overcoming such dynamic forces resisting the changes.
Dynamic Loss Coefficient - Dynamic Loss Coefficient is defined as the value which is experimentally determined to calculate the dynamic pressure loss.
Velocity of Air - (Measured in Meter per Second) - The Velocity of Air is defined as the rate of air movement measured in distance traveled relative to the time elapsed.

STEP 1: Convert Input(s) to Base Unit

Dynamic Loss Coefficient: 0.02 --> No Conversion Required
Velocity of Air: 35 Meter per Second --> 35 Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_d = C*0.6*V^2 --> 0.02*0.6*35^2

Evaluating ... ...

P_d = 14.7

STEP 3: Convert Result to Output's Unit

14.7 Pascal -->1.49847094801223 Millimeter Water (4 °C) (Check conversion here)

FINAL ANSWER

1.49847094801223 ≈ 1.498471 Millimeter Water (4 °C) <-- Dynamic Pressure Loss

(Calculation completed in 00.004 seconds)

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Home » Physics » Refrigeration and Air Conditioning » Ducts » Pressure » Dynamic Pressure Loss

Credits

Created by Abhishek Dharmendra Bansile

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

Abhishek Dharmendra Bansile has created this Calculator and 100+ more calculators!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

Anshika Arya has verified this Calculator and 2500+ more calculators!

< 17 Pressure 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)

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

Go Dynamic Pressure Loss = 0.6*Velocity of Air at Section 1^2*Pressure Loss Coefficient*Pressure Loss Coefficient at 1

Pressure Loss due to Gradual Contraction given Velocity of Air at Point 2

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

Dynamic Loss Coefficient given Equivalent Additional Length

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

Pressure Loss Coefficient at Outlet of Duct

Go Pressure Loss Coefficient at 2 = (Cross-Sectional Area of Duct at Section 2/Cross-Sectional Area of Duct at Section 1-1)^2

Pressure Loss Coefficient at Inlet of Duct

Go Pressure Loss Coefficient at 1 = (1-Cross-Sectional Area of Duct at Section 1/Cross-Sectional Area of Duct at Section 2)^2

Total Pressure required at Inlet to Duct

Go Total Pressure Required = Pressure Loss due to Friction in Ducts+Velocity Pressure in Ducts

Pressure Loss due to Sudden Contraction given Velocity of Air at point 2

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

Pressure Loss due to Sudden Enlargement

Go Dynamic Pressure Loss = 0.6*(Velocity of Air at Section 1-Velocity of Air at Section 2)^2

Pressure Loss due to Sudden Contraction given Velocity of Air at Point 1

Go Dynamic Pressure Loss = 0.6*Velocity of Air at Section 1^2*Dynamic Loss Coefficient

Dynamic Loss Coefficient given Dynamic Pressure Loss

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

Pressure Loss at Suction

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

Dynamic Pressure Loss

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

Pressure Loss at Discharge or Exit

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

Dynamic Pressure Loss Formula

Dynamic Pressure Loss = Dynamic Loss Coefficient*0.6*Velocity of Air^2
P_d = C*0.6*V^2

What is dynamic pressure loss and its causes?

The pressure loss due to the change of direction of velocity at the elbow is expressed either in terms of velocity pressure head or equivalent additional length which will give frictional loss equal to that caused by the elbow called Dynamic Pressure loss.

The dynamic losses are caused due to the change in direction or magnitude of velocity of the fluid in the duct. The change in the direction of velocity occurs at bends and elbows. The change in the magnitude of velocity occurs when the area of duct changes. The change in velocity magnitude or direction can be caused only by the
accelerating or decelerating forces which may be internal or external.

How to Calculate Dynamic Pressure Loss?

Dynamic Pressure Loss calculator uses Dynamic Pressure Loss = Dynamic Loss Coefficient*0.6*Velocity of Air^2 to calculate the Dynamic Pressure Loss, The Dynamic Pressure loss formula is defined as the loss of pressure is due to the loss of the energy of the fluid in overcoming such dynamic forces resisting the changes. Dynamic Pressure Loss is denoted by P_d symbol.

How to calculate Dynamic Pressure Loss using this online calculator? To use this online calculator for Dynamic Pressure Loss, enter Dynamic Loss Coefficient (C) & Velocity of Air (V) and hit the calculate button. Here is how the Dynamic Pressure Loss calculation can be explained with given input values -> 0.152749 = 0.02*0.6*35^2.

FAQ

What is Dynamic Pressure Loss?

The Dynamic Pressure loss formula is defined as the loss of pressure is due to the loss of the energy of the fluid in overcoming such dynamic forces resisting the changes and is represented as P_d = C*0.6*V^2 or Dynamic Pressure Loss = Dynamic Loss Coefficient*0.6*Velocity of Air^2. Dynamic Loss Coefficient is defined as the value which is experimentally determined to calculate the dynamic pressure loss & The Velocity of Air is defined as the rate of air movement measured in distance traveled relative to the time elapsed.

How to calculate Dynamic Pressure Loss?

The Dynamic Pressure loss formula is defined as the loss of pressure is due to the loss of the energy of the fluid in overcoming such dynamic forces resisting the changes is calculated using Dynamic Pressure Loss = Dynamic Loss Coefficient*0.6*Velocity of Air^2. To calculate Dynamic Pressure Loss, you need Dynamic Loss Coefficient (C) & Velocity of Air (V). With our tool, you need to enter the respective value for Dynamic Loss Coefficient & Velocity of Air 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 Dynamic Pressure Loss?

In this formula, Dynamic Pressure Loss uses Dynamic Loss Coefficient & Velocity of Air. We can use 7 other way(s) to calculate the same, which is/are as follows -

Dynamic Pressure Loss = 0.6*(Velocity of Air at Section 1-Velocity of Air at Section 2)^2
Dynamic Pressure Loss = 0.6*Velocity of Air at Section 1^2*Dynamic Loss Coefficient
Dynamic Pressure Loss = 0.6*Velocity of Air at Section 2^2*Pressure Loss Coefficient at 2
Dynamic Pressure Loss = 0.6*Velocity of Air at Section 1^2*Pressure Loss Coefficient*Pressure Loss Coefficient at 1
Dynamic Pressure Loss = 0.6*Velocity of Air at Section 2^2*Pressure Loss Coefficient*Pressure Loss Coefficient at 2
Dynamic Pressure Loss = Dynamic Loss Coefficient*0.6*Velocity of Air^2
Dynamic Pressure Loss = 0.6*Velocity of Air^2

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