Number of fins given perimeter Calculator

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Heat exchanger

Basics of HMT

Conduction

Convection

Convective Mass Transfer

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Transverse Fin Heat Exchanger

Effectiveness

NTU Relations

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Convection Coefficient

✖The perimeter of a figure is the total distance around the edge of the figure.ⓘ Perimeter [P]			+10% -10%
✖Height of Crack is the size of a flaw or crack in a material that can lead to catastrophic failure under a given stress.ⓘ Height of Crack [h]			+10% -10%
✖Fin length is the length of the fin.ⓘ Fin Length [FL]			+10% -10%

✖The Number of Fins is the total count of the fins in length L.ⓘ Number of fins given perimeter [NF]

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Formula

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Number of fins given perimeter

Formula

`"NF" = ("P"-2*"h")/(4*"FL")`

Example

`"6.25"=("25m"-2*"12000mm")/(4*"0.04m")`

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Number of fins given perimeter Solution

STEP 0: Pre-Calculation Summary

Formula Used

Number of Fins = (Perimeter-2*Height of Crack)/(4*Fin Length)
NF = (P-2*h)/(4*FL)
This formula uses 4 Variables

Variables Used

Number of Fins - The Number of Fins is the total count of the fins in length L.
Perimeter - (Measured in Meter) - The perimeter of a figure is the total distance around the edge of the figure.
Height of Crack - (Measured in Meter) - Height of Crack is the size of a flaw or crack in a material that can lead to catastrophic failure under a given stress.
Fin Length - (Measured in Meter) - Fin length is the length of the fin.

STEP 1: Convert Input(s) to Base Unit

Perimeter: 25 Meter --> 25 Meter No Conversion Required
Height of Crack: 12000 Millimeter --> 12 Meter (Check conversion here)
Fin Length: 0.04 Meter --> 0.04 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

NF = (P-2*h)/(4*FL) --> (25-2*12)/(4*0.04)

Evaluating ... ...

NF = 6.25

STEP 3: Convert Result to Output's Unit

6.25 --> No Conversion Required

FINAL ANSWER

6.25 <-- Number of Fins

(Calculation completed in 00.004 seconds)

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Created by Nishan Poojary

Shri Madhwa Vadiraja Institute of Technology and Management (SMVITM), Udupi

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Dayananda Sagar College of Engineering (DSCE), Bengaluru

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< 25 Transverse Fin Heat Exchanger Calculators

Outer Diameter of Tube in Transverse Fin Heat Exchanger

Go Outer Diameter = Bare Area/(pi*(Height of Crack-Number of Fins*Thickness))

Bare Area over Fin leaving Fin Base

Go Bare Area = pi*Outer Diameter*(Height of Crack-Number of Fins*Thickness)

Number of tubes in transverse fin heat exchanger

Go Number of Tubes = Mass Flow Rate/(Mass Flux(g)*Distance between two Consequent Tubes*Height of Crack)

Mass flux given mass flowrate

Go Mass Flux(g) = Mass Flow Rate/(Number of Tubes*Distance between two Consequent Tubes*Height of Crack)

Mass flowrate given mass flux

Go Mass Flow Rate = Mass Flux(g)*Number of Tubes*Distance between two Consequent Tubes*Height of Crack

Distance between two consequent tubes in transverse fin heat exchanger

Go Distance between two Consequent Tubes = Mass Flow Rate/(Mass Flux(g)*Number of Tubes*Length)

Length of tube bank

Go Length = Mass Flow Rate/(Mass Flux(g)*Number of Tubes*Distance between two Consequent Tubes)

Number of fins in length L

Go Number of Fins = (2*Surface Area)/(pi*((Fin Diameter^2)-(Outer Diameter^2)))

Fin surface area

Go Surface Area = (pi/2)*Number of Fins*((Fin Diameter^2)-(Outer Diameter^2))

Tube inside area required for heat exchange

Go Area = Heat Flow Rate/(Overall Heat Transfer Coefficient*Logarithmic Mean Temperature Difference)

Logarithmic mean of temperature difference

Go Logarithmic Mean Temperature Difference = Heat Flow Rate/(Area*Overall Heat Transfer Coefficient)

Perimeter given equivalent diameter

Go Perimeter = (2*(Surface Area+Bare Area))/(pi*Equivalent Diameter)

Overall heat transfer coefficient

Go Overall Heat Transfer Coefficient = Heat Flow Rate/(Area*Logarithmic Mean Temperature Difference)

Bare Area over Fin leaving Fin Base given Surface Area

Go Bare Area = ((pi*Equivalent Diameter*Perimeter)/2)-Surface Area

Fin surface area given equivalent diameter

Go Surface Area = ((pi*Equivalent Diameter*Perimeter)/2)-Bare Area

Equivalent diameter

Go Equivalent Diameter = 2*(Surface Area+Bare Area)/(pi*Perimeter)

Heat flow required

Go Heat Flow Rate = Area*Overall Heat Transfer Coefficient*Logarithmic Mean Temperature Difference

Equivalent diameter of tube for transverse fin heat exchanger

Go Equivalent Diameter = (Reynolds Number(e)*Viscosity of Fluid)/(Mass Flux)

Viscosity of fluid flowing inside tube of transverse fin heat exchanger

Go Viscosity of Fluid = (Mass Flux*Equivalent Diameter)/Reynolds Number(e)

Mass flux of fluid in transverse fin heat exchanger

Go Mass Flux = (Reynolds Number(e)*Viscosity of Fluid)/Equivalent Diameter

Reynolds number in heat exchanger

Go Reynolds Number = (Mass Flux*Equivalent Diameter)/(Viscosity of Fluid)

Length of fin

Go Fin Length = (Perimeter-(2*Height of Crack))/((4*Number of Fins))

Height of tank tube given perimeter

Go Height of Crack = (Perimeter-(4*Number of Fins*Fin Length))/2

Number of fins given perimeter

Go Number of Fins = (Perimeter-2*Height of Crack)/(4*Fin Length)

Perimeter of tube

Go Perimeter = (4*Number of Fins*Fin Length)+2*Height of Crack

Number of fins given perimeter Formula

Number of Fins = (Perimeter-2*Height of Crack)/(4*Fin Length)
NF = (P-2*h)/(4*FL)

What is Heat exchanger?

A heat exchanger is a system used to transfer heat between two or more fluids. Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural-gas processing, and sewage treatment. The classic example of a heat exchanger is found in an internal combustion engine in which a circulating fluid known as engine coolant flows through radiator coils and air flows past the coils, which cools the coolant and heats the incoming air. Another example is the heat sink, which is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant.

How to Calculate Number of fins given perimeter?

Number of fins given perimeter calculator uses Number of Fins = (Perimeter-2*Height of Crack)/(4*Fin Length) to calculate the Number of Fins, The Number of fins given perimeter formula is defined as the count of fins within the given length L required for effective heat transfer. Number of Fins is denoted by NF symbol.

How to calculate Number of fins given perimeter using this online calculator? To use this online calculator for Number of fins given perimeter, enter Perimeter (P), Height of Crack (h) & Fin Length (FL) and hit the calculate button. Here is how the Number of fins given perimeter calculation can be explained with given input values -> 6.125 = (25-2*12)/(4*0.04).

FAQ

What is Number of fins given perimeter?

The Number of fins given perimeter formula is defined as the count of fins within the given length L required for effective heat transfer and is represented as NF = (P-2*h)/(4*FL) or Number of Fins = (Perimeter-2*Height of Crack)/(4*Fin Length). The perimeter of a figure is the total distance around the edge of the figure, Height of Crack is the size of a flaw or crack in a material that can lead to catastrophic failure under a given stress & Fin length is the length of the fin.

How to calculate Number of fins given perimeter?

The Number of fins given perimeter formula is defined as the count of fins within the given length L required for effective heat transfer is calculated using Number of Fins = (Perimeter-2*Height of Crack)/(4*Fin Length). To calculate Number of fins given perimeter, you need Perimeter (P), Height of Crack (h) & Fin Length (FL). With our tool, you need to enter the respective value for Perimeter, Height of Crack & Fin Length 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 Number of Fins?

In this formula, Number of Fins uses Perimeter, Height of Crack & Fin Length. We can use 1 other way(s) to calculate the same, which is/are as follows -

Number of Fins = (2*Surface Area)/(pi*((Fin Diameter^2)-(Outer Diameter^2)))

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