Equivalent Diameter for Square Pitch in Heat Exchanger Calculator

✖Pipe Outer Diameter refers to the measurement of the outside or external diameter of a cylindrical pipe. It includes the pipe thickness into it.ⓘ Pipe Outer Diameter [D_Outer]			+10% -10%
✖Tube Pitch in a heat exchanger refers to the center-to-center spacing between adjacent tubes in a tube bundle of heat exchanger.ⓘ Tube Pitch [P_Tube]			+10% -10%

✖Equivalent diameter represents a single characteristic length that takes into account the cross-sectional shape and flow path of a non-circular or irregularly shaped channel or duct.ⓘ Equivalent Diameter for Square Pitch in Heat Exchanger [D_e]

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Formula

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Equivalent Diameter for Square Pitch in Heat Exchanger

Formula

`"D"_{"e"} = (1.27/"D"_{"Outer"})*(("P"_{"Tube"}^2)-0.785*("D"_{"Outer"}^2))`

Example

`"16.41742mm"=(1.27/"19mm")*((("23mm")^2)-0.785*(("19mm")^2))`

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Equivalent Diameter for Square Pitch in Heat Exchanger Solution

STEP 0: Pre-Calculation Summary

Formula Used

Equivalent Diameter = (1.27/Pipe Outer Diameter)*((Tube Pitch^2)-0.785*(Pipe Outer Diameter^2))
D_e = (1.27/D_Outer)*((P_Tube^2)-0.785*(D_Outer^2))
This formula uses 3 Variables

Variables Used

Equivalent Diameter - (Measured in Meter) - Equivalent diameter represents a single characteristic length that takes into account the cross-sectional shape and flow path of a non-circular or irregularly shaped channel or duct.
Pipe Outer Diameter - (Measured in Meter) - Pipe Outer Diameter refers to the measurement of the outside or external diameter of a cylindrical pipe. It includes the pipe thickness into it.
Tube Pitch - (Measured in Meter) - Tube Pitch in a heat exchanger refers to the center-to-center spacing between adjacent tubes in a tube bundle of heat exchanger.

STEP 1: Convert Input(s) to Base Unit

Pipe Outer Diameter: 19 Millimeter --> 0.019 Meter (Check conversion here)
Tube Pitch: 23 Millimeter --> 0.023 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

D_e = (1.27/D_Outer)*((P_Tube^2)-0.785*(D_Outer^2)) --> (1.27/0.019)*((0.023^2)-0.785*(0.019^2))

Evaluating ... ...

D_e = 0.0164174236842105

STEP 3: Convert Result to Output's Unit

0.0164174236842105 Meter -->16.4174236842105 Millimeter (Check conversion here)

FINAL ANSWER

16.4174236842105 ≈ 16.41742 Millimeter <-- Equivalent Diameter

(Calculation completed in 00.004 seconds)

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< 25 Basic Formulas Of Heat Exchanger Designs Calculators

Pressure Drop of Vapor in Condensers given Vapors on Shell Side

Go Shell Side Pressure Drop = 0.5*8*Friction Factor*(Length of Tube/Baffle Spacing)*(Shell Diameter/Equivalent Diameter)*(Fluid Density/2)*(Fluid Velocity^2)*((Fluid Viscosity at Bulk Temperature/Fluid Viscosity at Wall Temperature)^-0.14)

Shell Side Pressure Drop in Heat Exchanger

Go Shell Side Pressure Drop = (8*Friction Factor*(Length of Tube/Baffle Spacing)*(Shell Diameter/Equivalent Diameter))*(Fluid Density/2)*(Fluid Velocity^2)*((Fluid Viscosity at Bulk Temperature/Fluid Viscosity at Wall Temperature)^-0.14)

Tube Side Pressure Drop in Heat Exchanger for Turbulent Flow

Go Tube Side Pressure Drop = Number of Tube-Side Passes*(8*Friction Factor*(Length of Tube/Pipe Inner Diameter)*(Fluid Viscosity at Bulk Temperature/Fluid Viscosity at Wall Temperature)^-0.14+2.5)*(Fluid Density/2)*(Fluid Velocity^2)

Tube Side Pressure Drop in Heat Exchanger for Laminar Flow

Reynolds Number for Condensate Film Outside Vertical Tubes in Heat Exchanger

Go Reynold Number = 4*Mass Flowrate/(pi*Pipe Outer Diameter*Number of Tubes*Fluid Viscosity at Bulk Temperature)

Reynolds Number for Condensate Film Inside Vertical Tubes in Condenser

Go Reynold Number = 4*Mass Flowrate/(pi*Pipe Inner Diameter*Number of Tubes*Fluid Viscosity at Bulk Temperature)

Number of Tubes in Shell and Tube Heat Exchanger

Go Number of Tubes = 4*Mass Flowrate/(Fluid Density*Fluid Velocity*pi*(Pipe Inner Diameter)^2)

Shell Area for Heat Exchanger

Go Shell Area = (Tube Pitch-Pipe Outer Diameter)*Shell Diameter*(Baffle Spacing/Tube Pitch)

Stack Design Pressure Draft for Furnace

Go Draft Pressure = 0.0342*(Stack Height)*Atmospheric Pressure*(1/Ambient Temperature-1/Flue Gas Temperature)

Number of Transfer Units for Plate Heat Exchanger

Go Number of Transfer Units = (Outlet Temperature-Inlet Temperature)/Log Mean Temperature Difference

Equivalent Diameter for Triangular Pitch in Heat Exchanger

Go Equivalent Diameter = (1.10/Pipe Outer Diameter)*((Tube Pitch^2)-0.917*(Pipe Outer Diameter^2))

Equivalent Diameter for Square Pitch in Heat Exchanger

Go Equivalent Diameter = (1.27/Pipe Outer Diameter)*((Tube Pitch^2)-0.785*(Pipe Outer Diameter^2))

Viscosity Correction Factor for Shell and Tube Heat Exchanger

Go Viscosity Correction Factor = (Fluid Viscosity at Bulk Temperature/Fluid Viscosity at Wall Temperature)^0.14

Pumping Power Required in Heat Exchanger Given Pressure Drop

Go Pumping Power = (Mass Flowrate*Tube Side Pressure Drop)/Fluid Density

Heat Exchanger Volume for Hydrocarbon Applications

Go Heat Exchanger Volume = (Heat Duty of Heat Exchanger/Log Mean Temperature Difference)/100000

Heat Exchanger Volume for Air Separation Applications

Go Heat Exchanger Volume = (Heat Duty of Heat Exchanger/Log Mean Temperature Difference)/50000

Provision for Thermal Expansion and Contraction in Heat Exchanger

Go Thermal Expansion = (97.1*10^-6)*Length of Tube*Temperature Difference

Number of Tubes in Eight Pass Triangular Pitch given Bundle Diameter

Go Number of Tubes = 0.0365*(Bundle Diameter/Pipe Outer Diameter)^2.675

Number of Tubes in Six Pass Triangular Pitch given Bundle Diameter

Go Number of Tubes = 0.0743*(Bundle Diameter/Pipe Outer Diameter)^2.499

Number of Tubes in Four Pass Triangular Pitch given Bundle Diameter

Go Number of Tubes = 0.175*(Bundle Diameter/Pipe Outer Diameter)^2.285

Number of Tubes in One Pass Triangular Pitch given Bundle Diameter

Go Number of Tubes = 0.319*(Bundle Diameter/Pipe Outer Diameter)^2.142

Number of Tubes in Two Pass Triangular Pitch given Bundle Diameter

Go Number of Tubes = 0.249*(Bundle Diameter/Pipe Outer Diameter)^2.207

Number of Tubes in Center Row Given Bundle Diameter and Tube Pitch

Go Number of Tubes in Vertical Tube Row = Bundle Diameter/Tube Pitch

Number of Baffles in Shell and Tube Heat Exchanger

Go Number of Baffles = (Length of Tube/Baffle Spacing)-1

Shell Diameter of Heat Exchanger Given Clearance and Bundle Diameter

Go Shell Diameter = Shell Clearance+Bundle Diameter

Equivalent Diameter for Square Pitch in Heat Exchanger Formula

Equivalent Diameter = (1.27/Pipe Outer Diameter)*((Tube Pitch^2)-0.785*(Pipe Outer Diameter^2))
D_e = (1.27/D_Outer)*((P_Tube^2)-0.785*(D_Outer^2))

What is Shell and Tube heat exchanger?

A Shell and Tube Heat Exchanger is a common type of heat exchanger used in various industrial applications to transfer heat between two fluids. It consists of a large, cylindrical outer shell (usually made of metal) with multiple smaller tubes (also made of metal) running through it. The tubes are arranged in a bundle inside the shell and are typically oriented parallel to the shell's longitudinal axis.

What is Tube Pitch and Equivalent Diameter?

Tube pitch in a heat exchanger refers to the center-to-center spacing between adjacent tubes in the tube bundle. Generally the value of pitch is taken as 1.25 times the outer pipe diameter.
The Equivalent Diameter is a concept used to simplify the analysis of heat exchangers with non-circular tubes, such as triangular or square tubes.
Square Pitch Pattern is used when the fluid in tube side is less corrosive and no regular cleaning could be provided to the tubes.
Square Pattern Tube Pitch provides the Least heat transfer Coefficient.

How to Calculate Equivalent Diameter for Square Pitch in Heat Exchanger?

Equivalent Diameter for Square Pitch in Heat Exchanger calculator uses Equivalent Diameter = (1.27/Pipe Outer Diameter)*((Tube Pitch^2)-0.785*(Pipe Outer Diameter^2)) to calculate the Equivalent Diameter, The Equivalent Diameter for Square Pitch in Heat Exchanger formula is defined for square pattern tube arrangements in a Shell and Tube Heat Exchanger. Equivalent Diameter is denoted by D_e symbol.

How to calculate Equivalent Diameter for Square Pitch in Heat Exchanger using this online calculator? To use this online calculator for Equivalent Diameter for Square Pitch in Heat Exchanger, enter Pipe Outer Diameter (D_Outer) & Tube Pitch (P_Tube) and hit the calculate button. Here is how the Equivalent Diameter for Square Pitch in Heat Exchanger calculation can be explained with given input values -> 16417.42 = (1.27/0.019)*((0.023^2)-0.785*(0.019^2)).

FAQ

What is Equivalent Diameter for Square Pitch in Heat Exchanger?

The Equivalent Diameter for Square Pitch in Heat Exchanger formula is defined for square pattern tube arrangements in a Shell and Tube Heat Exchanger and is represented as D_e = (1.27/D_Outer)*((P_Tube^2)-0.785*(D_Outer^2)) or Equivalent Diameter = (1.27/Pipe Outer Diameter)*((Tube Pitch^2)-0.785*(Pipe Outer Diameter^2)). Pipe Outer Diameter refers to the measurement of the outside or external diameter of a cylindrical pipe. It includes the pipe thickness into it & Tube Pitch in a heat exchanger refers to the center-to-center spacing between adjacent tubes in a tube bundle of heat exchanger.

How to calculate Equivalent Diameter for Square Pitch in Heat Exchanger?

The Equivalent Diameter for Square Pitch in Heat Exchanger formula is defined for square pattern tube arrangements in a Shell and Tube Heat Exchanger is calculated using Equivalent Diameter = (1.27/Pipe Outer Diameter)*((Tube Pitch^2)-0.785*(Pipe Outer Diameter^2)). To calculate Equivalent Diameter for Square Pitch in Heat Exchanger, you need Pipe Outer Diameter (D_Outer) & Tube Pitch (P_Tube). With our tool, you need to enter the respective value for Pipe Outer Diameter & Tube Pitch 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 Equivalent Diameter?

In this formula, Equivalent Diameter uses Pipe Outer Diameter & Tube Pitch. We can use 1 other way(s) to calculate the same, which is/are as follows -

Equivalent Diameter = (1.10/Pipe Outer Diameter)*((Tube Pitch^2)-0.917*(Pipe Outer Diameter^2))

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