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Number of Tubes in Shell and Tube Heat Exchanger Formula

GoNumber of Tubes in One Pass Triangular Pitch given Bundle Diameter Formula

GoNumber of Tubes in Two Pass Triangular Pitch given Bundle Diameter Formula

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Number of tubes in a heat exchanger refers to the count of individual tubes that form the heat transfer surface inside the heat exchanger. Check FAQs

N Tubes = 4 \cdot \frac{M flow}{ρ fluid \cdot V f \cdot π \cdot {(D inner)}^{2}}

N_Tubes - Number of Tubes?M_flow - Mass Flowrate?ρ_fluid - Fluid Density?V_f - Fluid Velocity?D_inner - Pipe Inner Diameter?π - Archimedes' constant?

Number of Tubes in Shell and Tube Heat Exchanger Example

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Here is how the Number of Tubes in Shell and Tube Heat Exchanger equation looks like with Values.

Here is how the Number of Tubes in Shell and Tube Heat Exchanger equation looks like with Units.

Here is how the Number of Tubes in Shell and Tube Heat Exchanger equation looks like.

54.185 = 4 \cdot \frac{14}{995 \cdot 2.5 \cdot 3.1416 \cdot {(11.5)}^{2}}

54.185 = 4 \cdot \frac{14kg/s}{995kg/m³ \cdot 2.5m/s \cdot 3.1416 \cdot {(11.5mm)}^{2}}

54.185 = 4 \cdot \frac{14}{995 \cdot 2.5 \cdot 3.1416 \cdot {(11.5)}^{2}}

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Number of Tubes in Shell and Tube Heat Exchanger Solution

Follow our step by step solution on how to calculate Number of Tubes in Shell and Tube Heat Exchanger?

FIRST Step Consider the formula

N Tubes = 4 \cdot \frac{M flow}{ρ fluid \cdot V f \cdot π \cdot {(D inner)}^{2}}

Next Step Substitute values of Variables

∴

N Tubes = 4 \cdot \frac{14kg/s}{995kg/m³ \cdot 2.5m/s \cdot π \cdot {(11.5mm)}^{2}}

Next Step Substitute values of Constants

∴

N Tubes = 4 \cdot \frac{14kg/s}{995kg/m³ \cdot 2.5m/s \cdot 3.1416 \cdot {(11.5mm)}^{2}}

Next Step Convert Units

∴

N Tubes = 4 \cdot \frac{14kg/s}{995kg/m³ \cdot 2.5m/s \cdot 3.1416 \cdot {(0.0115m)}^{2}}

Next Step Prepare to Evaluate

∴

N Tubes = 4 \cdot \frac{14}{995 \cdot 2.5 \cdot 3.1416 \cdot {(0.0115)}^{2}}

Next Step Evaluate

∴

N Tubes = 54.1850382385798

LAST Step Rounding Answer

∴

N Tubes = 54.185

Number of Tubes in Shell and Tube Heat Exchanger Formula Elements

Variables

Constants

Number of Tubes

Number of tubes in a heat exchanger refers to the count of individual tubes that form the heat transfer surface inside the heat exchanger.

Symbol: N_Tubes

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Number of Tubes

Mass Flowrate

Mass Flowrate is the mass of a substance that passes per unit of time.

Symbol: M_flow

Measurement: Mass Flow RateUnit: kg/s

Note: Value should be greater than 0.

Formulas to find Mass Flowrate

Fluid Density

Fluid Density is defined as the ratio of mass of given fluid with respect to the volume that it occupies.

Symbol: ρ_fluid

Measurement: DensityUnit: kg/m³

Note: Value should be greater than 0.

Formulas to find Fluid Density

Fluid Velocity

Fluid Velocity is defined as the speed with which fluid flows inside a tube or pipe.

Symbol: V_f

Measurement: SpeedUnit: m/s

Note: Value should be greater than 0.

Formulas to find Fluid Velocity

Pipe Inner Diameter

Pipe inner diameter is the inner diameter where in the flow of fluid takes place. Pipe thickness is not taken into account.

Symbol: D_inner

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Pipe Inner Diameter

Archimedes' constant

Archimedes' constant is a mathematical constant that represents the ratio of the circumference of a circle to its diameter.

Symbol: π

Value: 3.14159265358979323846264338327950288

Other Formulas to find Number of Tubes

Go Number of Tubes in One Pass Triangular Pitch given Bundle Diameter

N Tubes = 0.319 \cdot {(\frac{D B}{D Outer})}^{2.142}

Go Number of Tubes in Two Pass Triangular Pitch given Bundle Diameter

N Tubes = 0.249 \cdot {(\frac{D B}{D Outer})}^{2.207}

Go Number of Tubes in Four Pass Triangular Pitch given Bundle Diameter

N Tubes = 0.175 \cdot {(\frac{D B}{D Outer})}^{2.285}

Go Number of Tubes in Six Pass Triangular Pitch given Bundle Diameter

N Tubes = 0.0743 \cdot {(\frac{D B}{D Outer})}^{2.499}

Other formulas in Basic Formulas of Heat Exchanger Designs category

Go Equivalent Diameter for Square Pitch in Heat Exchanger

D e = (\frac{1.27}{D Outer}) \cdot (({P Tube}^{2}) - 0.785 \cdot ({D Outer}^{2}))

Go Equivalent Diameter for Triangular Pitch in Heat Exchanger

D e = (\frac{1.10}{D Outer}) \cdot (({P Tube}^{2}) - 0.917 \cdot ({D Outer}^{2}))

Go Number of Baffles in Shell and Tube Heat Exchanger

N Baffles = (\frac{L Tube}{L Baffle}) - 1

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

N r = \frac{D B}{P Tube}

How to Evaluate Number of Tubes in Shell and Tube Heat Exchanger?

Number of Tubes in Shell and Tube Heat Exchanger evaluator uses Number of Tubes = 4*Mass Flowrate/(Fluid Density*Fluid Velocity*pi*(Pipe Inner Diameter)^2) to evaluate the Number of Tubes, The Number of tubes in Shell and Tube Heat Exchanger formula is defined as the total number of tubes that will be allocated inside a Shell and Tube Heat Exchanger. Number of Tubes is denoted by N_Tubes symbol.

How to evaluate Number of Tubes in Shell and Tube Heat Exchanger using this online evaluator? To use this online evaluator for Number of Tubes in Shell and Tube Heat Exchanger, enter Mass Flowrate (M_flow), Fluid Density (ρ_fluid), Fluid Velocity (V_f) & Pipe Inner Diameter (D_inner) and hit the calculate button.

FAQs on Number of Tubes in Shell and Tube Heat Exchanger

What is the formula to find Number of Tubes in Shell and Tube Heat Exchanger?

The formula of Number of Tubes in Shell and Tube Heat Exchanger is expressed as Number of Tubes = 4*Mass Flowrate/(Fluid Density*Fluid Velocity*pi*(Pipe Inner Diameter)^2). Here is an example- 54.18504 = 4*14/(995*2.5*pi*(0.0115)^2).

How to calculate Number of Tubes in Shell and Tube Heat Exchanger?

With Mass Flowrate (M_flow), Fluid Density (ρ_fluid), Fluid Velocity (V_f) & Pipe Inner Diameter (D_inner) we can find Number of Tubes in Shell and Tube Heat Exchanger using the formula - Number of Tubes = 4*Mass Flowrate/(Fluid Density*Fluid Velocity*pi*(Pipe Inner Diameter)^2). This formula also uses Archimedes' constant .

What are the other ways to Calculate Number of Tubes?

Here are the different ways to Calculate Number of Tubes-

Number of Tubes=0.319*(Bundle Diameter/Pipe Outer Diameter)^2.142
Number of Tubes=0.249*(Bundle Diameter/Pipe Outer Diameter)^2.207
Number of Tubes=0.175*(Bundle Diameter/Pipe Outer Diameter)^2.285

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Number of Tubes in Shell and Tube Heat Exchanger Formula

​GoNumber of Tubes in One Pass Triangular Pitch given Bundle Diameter Formula

​GoNumber of Tubes in Two Pass Triangular Pitch given Bundle Diameter Formula

Number of Tubes in Shell and Tube Heat Exchanger Example

Number of Tubes in Shell and Tube Heat Exchanger Solution

Number of Tubes in Shell and Tube Heat Exchanger Formula Elements

Other Formulas to find Number of Tubes

Other formulas in Basic Formulas of Heat Exchanger Designs category

How to Evaluate Number of Tubes in Shell and Tube Heat Exchanger?

FAQs on Number of Tubes in Shell and Tube Heat Exchanger

Variable Name

GoNumber of Tubes in One Pass Triangular Pitch given Bundle Diameter Formula

GoNumber of Tubes in Two Pass Triangular Pitch given Bundle Diameter Formula