Number of Baffles in Shell and Tube Heat Exchanger Calculator

✖Length of tube is the length which will be used during heat transfer in a exchanger.ⓘ Length of Tube [L_Tube]			+10% -10%
✖Baffle spacing refers to the distance between adjacent baffles within the heat exchanger. Their purpose is to create turbulence on shell side fluid.ⓘ Baffle Spacing [L_Baffle]			+10% -10%

✖Number of Baffles is defined as the baffles that can be accommodated in shell and tube heat exchanger.ⓘ Number of Baffles in Shell and Tube Heat Exchanger [N_Baffles]

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Formula

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Number of Baffles in Shell and Tube Heat Exchanger

Formula

`"N"_{"Baffles"} = ("L"_{"Tube"}/"L"_{"Baffle"})-1`

Example

`"21.5"=("4500mm"/"200mm")-1`

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Number of Baffles in Shell and Tube Heat Exchanger Solution

STEP 0: Pre-Calculation Summary

Formula Used

Number of Baffles = (Length of Tube/Baffle Spacing)-1
N_Baffles = (L_Tube/L_Baffle)-1
This formula uses 3 Variables

Variables Used

Number of Baffles - Number of Baffles is defined as the baffles that can be accommodated in shell and tube heat exchanger.
Length of Tube - (Measured in Meter) - Length of tube is the length which will be used during heat transfer in a exchanger.
Baffle Spacing - (Measured in Meter) - Baffle spacing refers to the distance between adjacent baffles within the heat exchanger. Their purpose is to create turbulence on shell side fluid.

STEP 1: Convert Input(s) to Base Unit

Length of Tube: 4500 Millimeter --> 4.5 Meter (Check conversion here)
Baffle Spacing: 200 Millimeter --> 0.2 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

N_Baffles = (L_Tube/L_Baffle)-1 --> (4.5/0.2)-1

Evaluating ... ...

N_Baffles = 21.5

STEP 3: Convert Result to Output's Unit

21.5 --> No Conversion Required

FINAL ANSWER

21.5 <-- Number of Baffles

(Calculation completed in 00.004 seconds)

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Home » Engineering » Chemical Engineering » Process Equipment Design » Heat Exchangers » Basic Formulas Of Heat Exchanger Designs » Number of Baffles in Shell and Tube Heat Exchanger

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Created by Rishi Vadodaria

Malviya National Institute Of Technology (MNIT JAIPUR ), JAIPUR

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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

Number of Baffles in Shell and Tube Heat Exchanger Formula

Number of Baffles = (Length of Tube/Baffle Spacing)-1
N_Baffles = (L_Tube/L_Baffle)-1

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 the significance of number of Baffles?

Baffles are widely used in shell and tube heat exchangers. The main purpose of using baffles is to create turbulence on the shell side fluid which results into better heat transfer among the fluids. The other use of having baffles results into providing additional support to the tubes of the exchanger.

How to Calculate Number of Baffles in Shell and Tube Heat Exchanger?

Number of Baffles in Shell and Tube Heat Exchanger calculator uses Number of Baffles = (Length of Tube/Baffle Spacing)-1 to calculate the Number of Baffles, The Number of Baffles in Shell and Tube Heat Exchanger formula is defined as the quantity of obstruction plates or fins deliberately positioned within a shell & Tube heat exchanger. These baffles are positioned to enhance heat transfer efficiency by promoting turbulence in shell side fluid. Number of Baffles is denoted by N_Baffles symbol.

How to calculate Number of Baffles in Shell and Tube Heat Exchanger using this online calculator? To use this online calculator for Number of Baffles in Shell and Tube Heat Exchanger, enter Length of Tube (L_Tube) & Baffle Spacing (L_Baffle) and hit the calculate button. Here is how the Number of Baffles in Shell and Tube Heat Exchanger calculation can be explained with given input values -> 21.5 = (4.5/0.2)-1.

FAQ

What is Number of Baffles in Shell and Tube Heat Exchanger?

The Number of Baffles in Shell and Tube Heat Exchanger formula is defined as the quantity of obstruction plates or fins deliberately positioned within a shell & Tube heat exchanger. These baffles are positioned to enhance heat transfer efficiency by promoting turbulence in shell side fluid and is represented as N_Baffles = (L_Tube/L_Baffle)-1 or Number of Baffles = (Length of Tube/Baffle Spacing)-1. Length of tube is the length which will be used during heat transfer in a exchanger & Baffle spacing refers to the distance between adjacent baffles within the heat exchanger. Their purpose is to create turbulence on shell side fluid.

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

The Number of Baffles in Shell and Tube Heat Exchanger formula is defined as the quantity of obstruction plates or fins deliberately positioned within a shell & Tube heat exchanger. These baffles are positioned to enhance heat transfer efficiency by promoting turbulence in shell side fluid is calculated using Number of Baffles = (Length of Tube/Baffle Spacing)-1. To calculate Number of Baffles in Shell and Tube Heat Exchanger, you need Length of Tube (L_Tube) & Baffle Spacing (L_Baffle). With our tool, you need to enter the respective value for Length of Tube & Baffle Spacing 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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