Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient Calculator

✖The Overall Heat Transfer Coefficient is a measure of the overall ability of a series of conductive and convective barriers to transfer heat.ⓘ Overall Heat Transfer Coefficient [U]			+10% -10%
✖Area of heat exchanger is the surface area of the heat transfer surface within the exchanger that is responsible for exchanging heat between two fluids.ⓘ Area of Heat Exchanger [A]			+10% -10%
✖The log mean temperature difference (LMTD) is a logarithmic average of the temperature difference between the hot and cold streams at each end of the heat exchanger.ⓘ Log Mean Temperature Difference [ΔT_m]			+10% -10%

✖Heat is the form of energy that is transferred between systems or objects with different temperatures (flowing from the high-temperature system to the low-temperature system).ⓘ Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient [Q]

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Formula

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Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient

Formula

`"Q" = "U"*"A"*"ΔT"_{"m"}`

Example

`"4275.2J"="40W/m²*K"*"6.68m²"*"16K"`

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Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient Solution

STEP 0: Pre-Calculation Summary

Formula Used

Heat = Overall Heat Transfer Coefficient*Area of Heat Exchanger*Log Mean Temperature Difference
Q = U*A*ΔT_m
This formula uses 4 Variables

Variables Used

Heat - (Measured in Joule) - Heat is the form of energy that is transferred between systems or objects with different temperatures (flowing from the high-temperature system to the low-temperature system).
Overall Heat Transfer Coefficient - (Measured in Watt per Square Meter per Kelvin) - The Overall Heat Transfer Coefficient is a measure of the overall ability of a series of conductive and convective barriers to transfer heat.
Area of Heat Exchanger - (Measured in Square Meter) - Area of heat exchanger is the surface area of the heat transfer surface within the exchanger that is responsible for exchanging heat between two fluids.
Log Mean Temperature Difference - (Measured in Kelvin) - The log mean temperature difference (LMTD) is a logarithmic average of the temperature difference between the hot and cold streams at each end of the heat exchanger.

STEP 1: Convert Input(s) to Base Unit

Overall Heat Transfer Coefficient: 40 Watt per Square Meter per Kelvin --> 40 Watt per Square Meter per Kelvin No Conversion Required
Area of Heat Exchanger: 6.68 Square Meter --> 6.68 Square Meter No Conversion Required
Log Mean Temperature Difference: 16 Kelvin --> 16 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Q = U*A*ΔT_m --> 40*6.68*16

Evaluating ... ...

Q = 4275.2

STEP 3: Convert Result to Output's Unit

4275.2 Joule --> No Conversion Required

FINAL ANSWER

4275.2 Joule <-- Heat

(Calculation completed in 00.004 seconds)

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Created by Ishan Gupta

Birla Institute of Technology & Science (BITS), Pilani

Ishan Gupta has created this Calculator and 50+ more calculators!

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< 10+ Heat Exchanger Calculators

Overall Heat Transfer Coefficient for Unfinned Tube

Go Overall Heat Transfer Coefficient after Fouling = 1/((1/External Convection Heat Transfer Coefficient)+Fouling Factor on Outside of Tube+(((Outside Tube Diameter*(ln(Outside Tube Diameter/Inside Tube Diameter))))/(2*Thermal Conductivity))+((Fouling Factor on Inside of Tube*Outside Tube Surface Area)/Inside Tube Surface Area)+(Outside Tube Surface Area/(Inside Convection Heat Transfer Coefficient*Inside Tube Surface Area)))

Total Heat Transfer Coefficient for Long Cylinder

Go Heat Transfer Coefficient = ((0.023*(Mass Velocity^0.8)*(Thermal Conductivity^0.67)*(Specific Heat Capacity^0.33))/((Diameter of Tube^0.2)*(Viscosity of Fluid^0.47)))

Heat Transfer in Heat Exchanger given Cold Fluid Properties

Go Heat = modulus(Mass of Cold Fluid*Specific Heat Capacity of Cold Fluid*(Inlet Temperature of Cold Fluid-Outlet Temperature of Cold Fluid))

Heat Transfer in Heat Exchanger given Hot Fluid Properties

Go Heat = Mass of Hot Fluid*Specific Heat Capacity of Hot Fluid*(Inlet Temperature of Hot Fluid-Outlet Temperature of Hot Fluid)

Rate of Heat Transfer using Correction Factor and LMTD

Go Heat Transfer = Overall Heat Transfer Coefficient*Area of Heat Exchanger*Correction Factor*Log Mean Temperature Difference

Maximum Possible Rate of Heat Transfer

Go Maximum Possible Rate of Heat Transfer = Minimum Capacity Rate*(Inlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid)

Number of Heat Transfer Units

Go Number of Heat Transfer Units = (Overall Heat Transfer Coefficient*Area of Heat Exchanger)/Minimum Capacity Rate

Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient

Go Heat = Overall Heat Transfer Coefficient*Area of Heat Exchanger*Log Mean Temperature Difference

Fouling Factor

Go Fouling Factor = (1/Overall Heat Transfer Coefficient after Fouling)-(1/Overall Heat Transfer Coefficient)

Capacity Rate

Go Capacity Rate = Mass Flow Rate*Specific Heat Capacity

< 15 Heat Exchanger and its Effectiveness Calculators

Overall Heat Transfer Coefficient for Unfinned Tube

Effectiveness of Counter-Current Heat Exchanger if Cold Fluid is Minimum Fluid

Go Effectiveness of HE when Cold Fluid is Min Fluid = (modulus((Inlet Temperature of Cold Fluid-Outlet Temperature of Cold Fluid))/(Inlet Temperature of Hot Fluid-Outlet Temperature of Cold Fluid))

Effectiveness of Parallel-Flow Heat Exchanger if Cold Fluid is Minimum Fluid

Go Effectiveness of HE when Cold Fluid is Min Fluid = (Outlet Temperature of Cold Fluid-Inlet Temperature of Cold Fluid)/(Inlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid)

Effectiveness of Parallel-Flow Heat Exchanger if Hot Fluid is Minimum Fluid

Go Effectiveness of HE when Hot Fluid is Min Fluid = ((Inlet Temperature of Hot Fluid-Outlet Temperature of Hot Fluid)/(Inlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid))

Effectiveness of Counter-Current Heat Exchanger if Hot Fluid is Minimum Fluid

Go Effectiveness of HE when Hot Fluid is Min Fluid = (Inlet Temperature of Hot Fluid-Outlet Temperature of Hot Fluid)/(Inlet Temperature of Hot Fluid-Outlet Temperature of Cold Fluid)

Heat Transfer in Heat Exchanger given Cold Fluid Properties

Go Heat = modulus(Mass of Cold Fluid*Specific Heat Capacity of Cold Fluid*(Inlet Temperature of Cold Fluid-Outlet Temperature of Cold Fluid))

Heat Transfer in Heat Exchanger given Hot Fluid Properties

Go Heat = Mass of Hot Fluid*Specific Heat Capacity of Hot Fluid*(Inlet Temperature of Hot Fluid-Outlet Temperature of Hot Fluid)

Rate of Heat Transfer using Correction Factor and LMTD

Go Heat Transfer = Overall Heat Transfer Coefficient*Area of Heat Exchanger*Correction Factor*Log Mean Temperature Difference

Maximum Possible Rate of Heat Transfer

Go Maximum Possible Rate of Heat Transfer = Minimum Capacity Rate*(Inlet Temperature of Hot Fluid-Inlet Temperature of Cold Fluid)

Number of Heat Transfer Units

Go Number of Heat Transfer Units = (Overall Heat Transfer Coefficient*Area of Heat Exchanger)/Minimum Capacity Rate

Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient

Go Heat = Overall Heat Transfer Coefficient*Area of Heat Exchanger*Log Mean Temperature Difference

Heat Exchanger Effectiveness for Minimum Fluid

Go Effectiveness of Heat Exchanger = Temperature Difference of Minimum Fluid/Maximum Temperature Difference in Heat Exchanger

Fouling Factor

Go Fouling Factor = (1/Overall Heat Transfer Coefficient after Fouling)-(1/Overall Heat Transfer Coefficient)

Heat Exchanger Effectiveness

Go Effectiveness of Heat Exchanger = Actual Rate of Heat Transfer/Maximum Possible Rate of Heat Transfer

Capacity Rate

Go Capacity Rate = Mass Flow Rate*Specific Heat Capacity

Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient Formula

Heat = Overall Heat Transfer Coefficient*Area of Heat Exchanger*Log Mean Temperature Difference
Q = U*A*ΔT_m

Heat Transfer in a Heat Exchanger

Heat Transfer in a Heat Exchanger gives the heat transferred from hot fluid to cold fluid. The unit of rate of Heat Transfer in Joules per unit time.

What are the Different Types of Heat Exchanger?

Mainly Heat Exchanger are divided in 4 categories: Hairpin Type Heat Exchanger, Double Pipe Heat Exchanger, Shell and Tube Heat Exchanger & Plate Type Heat Exchanger.

How to Calculate Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient?

Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient calculator uses Heat = Overall Heat Transfer Coefficient*Area of Heat Exchanger*Log Mean Temperature Difference to calculate the Heat, Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient gives the heat energy transferred from the hot fluid to the cold fluid as a function of the area available for heat transfer and log mean temperature difference between the fluids. Heat is denoted by Q symbol.

How to calculate Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient using this online calculator? To use this online calculator for Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient, enter Overall Heat Transfer Coefficient (U), Area of Heat Exchanger (A) & Log Mean Temperature Difference (ΔT_m) and hit the calculate button. Here is how the Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient calculation can be explained with given input values -> 4275.2 = 40*6.68*16.

FAQ

What is Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient?

Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient gives the heat energy transferred from the hot fluid to the cold fluid as a function of the area available for heat transfer and log mean temperature difference between the fluids and is represented as Q = U*A*ΔT_m or Heat = Overall Heat Transfer Coefficient*Area of Heat Exchanger*Log Mean Temperature Difference. The Overall Heat Transfer Coefficient is a measure of the overall ability of a series of conductive and convective barriers to transfer heat, Area of heat exchanger is the surface area of the heat transfer surface within the exchanger that is responsible for exchanging heat between two fluids & The log mean temperature difference (LMTD) is a logarithmic average of the temperature difference between the hot and cold streams at each end of the heat exchanger.

How to calculate Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient?

Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient gives the heat energy transferred from the hot fluid to the cold fluid as a function of the area available for heat transfer and log mean temperature difference between the fluids is calculated using Heat = Overall Heat Transfer Coefficient*Area of Heat Exchanger*Log Mean Temperature Difference. To calculate Heat Transfer in Heat Exchanger given Overall Heat Transfer Coefficient, you need Overall Heat Transfer Coefficient (U), Area of Heat Exchanger (A) & Log Mean Temperature Difference (ΔT_m). With our tool, you need to enter the respective value for Overall Heat Transfer Coefficient, Area of Heat Exchanger & Log Mean Temperature Difference 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 Heat?

In this formula, Heat uses Overall Heat Transfer Coefficient, Area of Heat Exchanger & Log Mean Temperature Difference. We can use 4 other way(s) to calculate the same, which is/are as follows -

Heat = modulus(Mass of Cold Fluid*Specific Heat Capacity of Cold Fluid*(Inlet Temperature of Cold Fluid-Outlet Temperature of Cold Fluid))
Heat = Mass of Hot Fluid*Specific Heat Capacity of Hot Fluid*(Inlet Temperature of Hot Fluid-Outlet Temperature of Hot Fluid)
Heat = modulus(Mass of Cold Fluid*Specific Heat Capacity of Cold Fluid*(Inlet Temperature of Cold Fluid-Outlet Temperature of Cold Fluid))
Heat = Mass of Hot Fluid*Specific Heat Capacity of Hot Fluid*(Inlet Temperature of Hot Fluid-Outlet Temperature of Hot Fluid)

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