Total Pressure required at Inlet to Duct Calculator

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Ducts

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Enthalpy of Saturated Air

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Pressure

Continuity Equation for Ducts

Friction Factor

Parameters of Ducts

Pressure Loss in Ducts

✖Pressure Loss due to Friction in Ducts is defined as the energy lost in a fluid transportation through a pipe due to friction between the fluid and pipe wall.ⓘ Pressure Loss due to Friction in Ducts [P_f]			+10% -10%
✖Velocity Pressure in Ducts is the pressure required to accelerate air from zero velocity to some velocity (V) and is proportional to the kinetic energy of the air stream.ⓘ Velocity Pressure in Ducts [P_v]			+10% -10%

✖Total pressure required is the amount of pressure required at the inlet or outlet of ducts/pipes.ⓘ Total Pressure required at Inlet to Duct [P_T]

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Formula

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Total Pressure required at Inlet to Duct

Formula

`"P"_{"T"} = "P"_{"f"}+"P"_{"v"}`

Example

`"23.5mmAq"="10.5mmAq"+"13mmAq"`

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Total Pressure required at Inlet to Duct Solution

STEP 0: Pre-Calculation Summary

Formula Used

Total Pressure Required = Pressure Loss due to Friction in Ducts+Velocity Pressure in Ducts
P_T = P_f+P_v
This formula uses 3 Variables

Variables Used

Total Pressure Required - (Measured in Pascal) - Total pressure required is the amount of pressure required at the inlet or outlet of ducts/pipes.
Pressure Loss due to Friction in Ducts - (Measured in Pascal) - Pressure Loss due to Friction in Ducts is defined as the energy lost in a fluid transportation through a pipe due to friction between the fluid and pipe wall.
Velocity Pressure in Ducts - (Measured in Pascal) - Velocity Pressure in Ducts is the pressure required to accelerate air from zero velocity to some velocity (V) and is proportional to the kinetic energy of the air stream.

STEP 1: Convert Input(s) to Base Unit

Pressure Loss due to Friction in Ducts: 10.5 Millimeter Water (4 °C) --> 103.005 Pascal (Check conversion here)
Velocity Pressure in Ducts: 13 Millimeter Water (4 °C) --> 127.53 Pascal (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_T = P_f+P_v --> 103.005+127.53

Evaluating ... ...

P_T = 230.535

STEP 3: Convert Result to Output's Unit

230.535 Pascal -->23.5 Millimeter Water (4 °C) (Check conversion here)

FINAL ANSWER

23.5 Millimeter Water (4 °C) <-- Total Pressure Required

(Calculation completed in 00.004 seconds)

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Created by Abhishek Dharmendra Bansile

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

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< 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

Total Pressure required at Inlet to Duct Formula

Total Pressure Required = Pressure Loss due to Friction in Ducts+Velocity Pressure in Ducts
P_T = P_f+P_v

What is the total pressure required at the inlet to the duct?

The total pressure required at the inlet to the duct is nothing but the sum of pressure loss due to friction and velocity pressure in the ducts.

How to Calculate Total Pressure required at Inlet to Duct?

Total Pressure required at Inlet to Duct calculator uses Total Pressure Required = Pressure Loss due to Friction in Ducts+Velocity Pressure in Ducts to calculate the Total Pressure Required, Total Pressure required at Inlet to Duct formula is defined as the total amount of pressure required at the inlet of the duct. Total Pressure Required is denoted by P_T symbol.

How to calculate Total Pressure required at Inlet to Duct using this online calculator? To use this online calculator for Total Pressure required at Inlet to Duct, enter Pressure Loss due to Friction in Ducts (P_f) & Velocity Pressure in Ducts (P_v) and hit the calculate button. Here is how the Total Pressure required at Inlet to Duct calculation can be explained with given input values -> 2.395515 = 103.005+127.53.

FAQ

What is Total Pressure required at Inlet to Duct?

Total Pressure required at Inlet to Duct formula is defined as the total amount of pressure required at the inlet of the duct and is represented as P_T = P_f+P_v or Total Pressure Required = Pressure Loss due to Friction in Ducts+Velocity Pressure in Ducts. Pressure Loss due to Friction in Ducts is defined as the energy lost in a fluid transportation through a pipe due to friction between the fluid and pipe wall & Velocity Pressure in Ducts is the pressure required to accelerate air from zero velocity to some velocity (V) and is proportional to the kinetic energy of the air stream.

How to calculate Total Pressure required at Inlet to Duct?

Total Pressure required at Inlet to Duct formula is defined as the total amount of pressure required at the inlet of the duct is calculated using Total Pressure Required = Pressure Loss due to Friction in Ducts+Velocity Pressure in Ducts. To calculate Total Pressure required at Inlet to Duct, you need Pressure Loss due to Friction in Ducts (P_f) & Velocity Pressure in Ducts (P_v). With our tool, you need to enter the respective value for Pressure Loss due to Friction in Ducts & Velocity Pressure in Ducts and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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