Diameter of suction pipe Calculator

✖Actual discharge at centrifugal pump outlet is the actual amount of the liquid outflow from the outlet of the centrifugal pump.ⓘ Actual discharge at centrifugal pump outlet [Q]			+10% -10%
✖Velocity in Suction Pipe is the velocity of liquid in suction pipe.ⓘ Velocity in Suction Pipe [V_s]			+10% -10%

✖Diameter of suction pipe of pump is the diameter of cross-section of the circular pipe at the suction side of the pump.ⓘ Diameter of suction pipe [D_s]

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Formula

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Diameter of suction pipe

Formula

`"D"_{"s"} = sqrt((4*"Q")/(pi*"V"_{"s"}))`

Example

`"0.184264m"=sqrt((4*"0.056m³/s")/(pi*"2.1m/s"))`

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Diameter of suction pipe Solution

STEP 0: Pre-Calculation Summary

Formula Used

Diameter of suction pipe of pump = sqrt((4*Actual discharge at centrifugal pump outlet)/(pi*Velocity in Suction Pipe))
D_s = sqrt((4*Q)/(pi*V_s))
This formula uses 1 Constants, 1 Functions, 3 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Functions Used

sqrt - A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number., sqrt(Number)

Variables Used

Diameter of suction pipe of pump - (Measured in Meter) - Diameter of suction pipe of pump is the diameter of cross-section of the circular pipe at the suction side of the pump.
Actual discharge at centrifugal pump outlet - (Measured in Cubic Meter per Second) - Actual discharge at centrifugal pump outlet is the actual amount of the liquid outflow from the outlet of the centrifugal pump.
Velocity in Suction Pipe - (Measured in Meter per Second) - Velocity in Suction Pipe is the velocity of liquid in suction pipe.

STEP 1: Convert Input(s) to Base Unit

Actual discharge at centrifugal pump outlet: 0.056 Cubic Meter per Second --> 0.056 Cubic Meter per Second No Conversion Required
Velocity in Suction Pipe: 2.1 Meter per Second --> 2.1 Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

D_s = sqrt((4*Q)/(pi*V_s)) --> sqrt((4*0.056)/(pi*2.1))

Evaluating ... ...

D_s = 0.184263546384712

STEP 3: Convert Result to Output's Unit

0.184263546384712 Meter --> No Conversion Required

FINAL ANSWER

0.184263546384712 ≈ 0.184264 Meter <-- Diameter of suction pipe of pump

(Calculation completed in 00.004 seconds)

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Home » Physics » Fluid Mechanics » Fluid Machinery » Centrifugal Pumps » Geometric and Flow Parameters » Diameter of suction pipe

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Created by Sagar S Kulkarni

Dayananda Sagar College of Engineering (DSCE), Bengaluru

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National Institute of Technology (NIT), Tiruchirapalli

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< 19 Geometric and Flow Parameters Calculators

Mechanical efficiency given Specific Weight of Liquid

Go Mechanical efficiency of centrifugal pump = (Specific weight of fluid in pump*(Actual discharge at centrifugal pump outlet+Leakage of Liquid from Impeller)*(Velocity of Whirl at Outlet*Tangential Velocity of Impeller at Outlet/[g]))/Input power to centrifugal pump

Overall efficiency

Go Overall efficiency of centrifugal pump = (Specific weight of fluid in pump*Actual discharge at centrifugal pump outlet*Manometric Head of Centrifugal Pump)/Input power to centrifugal pump

Flow velocity at outlet given volume of liquid

Go Flow velocity at outlet of centrifugal pump = Actual discharge at centrifugal pump outlet/(pi*Diameter of centrifugal pump impeller at outlet*Width of Impeller at Outlet)

Volume of liquid at outlet

Go Actual discharge at centrifugal pump outlet = pi*Diameter of centrifugal pump impeller at outlet*Width of Impeller at Outlet*Flow velocity at outlet of centrifugal pump

Flow velocity at inlet given volume of liquid

Go Flow velocity at inlet of centrifugal pump = Actual discharge at centrifugal pump outlet/(pi*Diameter of centrifugal pump impeller at inlet*Width of Impeller at Inlet)

Volume of liquid at inlet

Go Actual discharge at centrifugal pump outlet = pi*Diameter of centrifugal pump impeller at inlet*Width of Impeller at Inlet*Flow velocity at inlet of centrifugal pump

Thoma's cavitation factor

Go Thoma's Cavitation Factor = (Atmospheric Pressure Head for Pump-Suction head of centrifugal pump-Vapour Pressure Head)/Manometric Head of Centrifugal Pump

Leakage of Liquid given Volumetric Efficiency and Discharge

Go Leakage of Liquid from Impeller = (Actual discharge at centrifugal pump outlet/Volumetric efficiency of centrifugal pump)-Actual discharge at centrifugal pump outlet

Torque at outlet

Go Torque at Centrifugal Pump Outlet = (Weight of liquid in pump/[g])*Velocity of Whirl at Outlet*Radius of Impeller at Outlet

Flow velocity given flow ratio

Go Flow velocity at outlet of centrifugal pump = Flow ratio centrifugal pump*sqrt(2*[g]*Manometric Head of Centrifugal Pump)

Flow ratio

Go Flow ratio centrifugal pump = Flow velocity at outlet of centrifugal pump/sqrt(2*[g]*Manometric Head of Centrifugal Pump)

Diameter of delivery pipe

Go Diameter of delivery pipe of pump = sqrt((4*Actual discharge at centrifugal pump outlet)/(pi*Velocity in Delivery Pipe))

Speed ratio

Go Speed ratio centrifugal pump = Tangential Velocity of Impeller at Outlet/sqrt(2*[g]*Manometric Head of Centrifugal Pump)

Diameter of suction pipe

Go Diameter of suction pipe of pump = sqrt((4*Actual discharge at centrifugal pump outlet)/(pi*Velocity in Suction Pipe))

Net positive suction head

Go Net Positive Suction Head of Centrifugal Pump = Atmospheric Pressure Head for Pump-Static Head of Centrifugal Pump-Vapour Pressure Head

Thoma's Cavitation factor given Net Positive Suction Head

Go Thoma's Cavitation Factor = Net Positive Suction Head of Centrifugal Pump/Manometric Head of Centrifugal Pump

Weight of liquid

Go Weight of liquid in pump = Specific Weight of Liquid*Actual discharge at centrifugal pump outlet

Static head

Go Static Head of Centrifugal Pump = Suction head of centrifugal pump+Delivery head of pump

Vane efficiency

Go Vane Efficiency = Actual Head of Pump/Euler Head of Pump

Diameter of suction pipe Formula

Diameter of suction pipe of pump = sqrt((4*Actual discharge at centrifugal pump outlet)/(pi*Velocity in Suction Pipe))
D_s = sqrt((4*Q)/(pi*V_s))

What is the general value of vane efficiency in centrifugal pumps?

It has been observed through experiments that as the number of vanes is increased the value of ε increases and approaches unity. The value of ε, in addition to number of vanes, depends on the shape of the vane and the outlet vane angle. In general, for radial flow pumps the value of ε varies from 0.6 to 0.8 as the number of vanes is increased from 4 to 12. However, for impeller with vanes more than 24 the value of ε may be taken as unity, unless mentioned otherwise.

How to Calculate Diameter of suction pipe?

Diameter of suction pipe calculator uses Diameter of suction pipe of pump = sqrt((4*Actual discharge at centrifugal pump outlet)/(pi*Velocity in Suction Pipe)) to calculate the Diameter of suction pipe of pump, The Diameter of suction pipe formula is defined as the square root of ratio of 4 times the discharge to pi times the velocity in suction pipe. Diameter of suction pipe of pump is denoted by D_s symbol.

How to calculate Diameter of suction pipe using this online calculator? To use this online calculator for Diameter of suction pipe, enter Actual discharge at centrifugal pump outlet (Q) & Velocity in Suction Pipe (V_s) and hit the calculate button. Here is how the Diameter of suction pipe calculation can be explained with given input values -> 0.184264 = sqrt((4*0.056)/(pi*2.1)).

FAQ

What is Diameter of suction pipe?

The Diameter of suction pipe formula is defined as the square root of ratio of 4 times the discharge to pi times the velocity in suction pipe and is represented as D_s = sqrt((4*Q)/(pi*V_s)) or Diameter of suction pipe of pump = sqrt((4*Actual discharge at centrifugal pump outlet)/(pi*Velocity in Suction Pipe)). Actual discharge at centrifugal pump outlet is the actual amount of the liquid outflow from the outlet of the centrifugal pump & Velocity in Suction Pipe is the velocity of liquid in suction pipe.

How to calculate Diameter of suction pipe?

The Diameter of suction pipe formula is defined as the square root of ratio of 4 times the discharge to pi times the velocity in suction pipe is calculated using Diameter of suction pipe of pump = sqrt((4*Actual discharge at centrifugal pump outlet)/(pi*Velocity in Suction Pipe)). To calculate Diameter of suction pipe, you need Actual discharge at centrifugal pump outlet (Q) & Velocity in Suction Pipe (V_s). With our tool, you need to enter the respective value for Actual discharge at centrifugal pump outlet & Velocity in Suction Pipe 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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