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Heat Exchanger Effectiveness Calculator

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✖Actual Rate of Heat Transfer is the amount of heat that is transferred per unit of time in some material.ⓘ Actual Rate of Heat Transfer [QActual]
+10%
-10%
✖Maximum Possible Rate of Heat Transfer is defined as the maximum amount of heat that is transferred per unit of time in some material.ⓘ Maximum Possible Rate of Heat Transfer [QMax]
+10%
-10%
✖The effectiveness of heat exchanger is defined as the ratio of the actual heat transfer to the maximum possible heat transfer.ⓘ Heat Exchanger Effectiveness [ϵ]
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Formula
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Heat Exchanger Effectiveness

Formula
`"ϵ" = "Q"_{"Actual"}/"Q"_{"Max"}`

Example
`"0.01665"="999J/s"/"60000J/s"`

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Heat Exchanger Effectiveness Solution

STEP 0: Pre-Calculation Summary
Formula Used
Effectiveness of Heat Exchanger = Actual Rate of Heat Transfer/Maximum Possible Rate of Heat Transfer
ϵ = QActual/QMax
This formula uses 3 Variables
Variables Used
Effectiveness of Heat Exchanger - The effectiveness of heat exchanger is defined as the ratio of the actual heat transfer to the maximum possible heat transfer.
Actual Rate of Heat Transfer - (Measured in Joule per Second) - Actual Rate of Heat Transfer is the amount of heat that is transferred per unit of time in some material.
Maximum Possible Rate of Heat Transfer - (Measured in Joule per Second) - Maximum Possible Rate of Heat Transfer is defined as the maximum amount of heat that is transferred per unit of time in some material.
STEP 1: Convert Input(s) to Base Unit
Actual Rate of Heat Transfer: 999 Joule per Second --> 999 Joule per Second No Conversion Required
Maximum Possible Rate of Heat Transfer: 60000 Joule per Second --> 60000 Joule per Second No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
ϵ = QActual/QMax --> 999/60000
Evaluating ... ...
ϵ = 0.01665
STEP 3: Convert Result to Output's Unit
0.01665 --> No Conversion Required
FINAL ANSWER
0.01665 <-- Effectiveness of Heat Exchanger
(Calculation completed in 00.004 seconds)
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Created by Ayush gupta
University School of Chemical Technology-USCT (GGSIPU), New Delhi
Ayush gupta has created this Calculator and 300+ more calculators!
Verified by Soupayan banerjee
National University of Judicial Science (NUJS), Kolkata
Soupayan banerjee has verified this Calculator and 800+ more calculators!

6 Effectiveness of Heat Exchanger Calculators

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 Exchanger Effectiveness for Minimum Fluid
Go Effectiveness of Heat Exchanger = Temperature Difference of Minimum Fluid/Maximum Temperature Difference in Heat Exchanger
Heat Exchanger Effectiveness
Go Effectiveness of Heat Exchanger = Actual Rate of Heat Transfer/Maximum Possible Rate of Heat Transfer

15 Heat Exchanger and its Effectiveness 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)))
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 Exchanger Effectiveness Formula

Effectiveness of Heat Exchanger = Actual Rate of Heat Transfer/Maximum Possible Rate of Heat Transfer
ϵ = QActual/QMax

What is Heat Exchanger?

A Heat Exchanger is a device that facilitates the process of heat exchange between two fluids that are at different temperatures.

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 Exchanger Effectiveness?

Heat Exchanger Effectiveness calculator uses Effectiveness of Heat Exchanger = Actual Rate of Heat Transfer/Maximum Possible Rate of Heat Transfer to calculate the Effectiveness of Heat Exchanger, The Heat Exchanger Effectiveness formula is defined as the ratio of the rate of actual heat transfer to the rate of maximum possible heat transfer. It allows engineers to predict how a given heat exchanger will perform a new job. Effectiveness of Heat Exchanger is denoted by ϵ symbol.

How to calculate Heat Exchanger Effectiveness using this online calculator? To use this online calculator for Heat Exchanger Effectiveness, enter Actual Rate of Heat Transfer (QActual) & Maximum Possible Rate of Heat Transfer (QMax) and hit the calculate button. Here is how the Heat Exchanger Effectiveness calculation can be explained with given input values -> 0.01665 = 999/60000.

FAQ

What is Heat Exchanger Effectiveness?
The Heat Exchanger Effectiveness formula is defined as the ratio of the rate of actual heat transfer to the rate of maximum possible heat transfer. It allows engineers to predict how a given heat exchanger will perform a new job and is represented as ϵ = QActual/QMax or Effectiveness of Heat Exchanger = Actual Rate of Heat Transfer/Maximum Possible Rate of Heat Transfer. Actual Rate of Heat Transfer is the amount of heat that is transferred per unit of time in some material & Maximum Possible Rate of Heat Transfer is defined as the maximum amount of heat that is transferred per unit of time in some material.
How to calculate Heat Exchanger Effectiveness?
The Heat Exchanger Effectiveness formula is defined as the ratio of the rate of actual heat transfer to the rate of maximum possible heat transfer. It allows engineers to predict how a given heat exchanger will perform a new job is calculated using Effectiveness of Heat Exchanger = Actual Rate of Heat Transfer/Maximum Possible Rate of Heat Transfer. To calculate Heat Exchanger Effectiveness, you need Actual Rate of Heat Transfer (QActual) & Maximum Possible Rate of Heat Transfer (QMax). With our tool, you need to enter the respective value for Actual Rate of Heat Transfer & Maximum Possible Rate of Heat Transfer 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 Effectiveness of Heat Exchanger?
In this formula, Effectiveness of Heat Exchanger uses Actual Rate of Heat Transfer & Maximum Possible Rate of Heat Transfer. We can use 2 other way(s) to calculate the same, which is/are as follows -
  • Effectiveness of Heat Exchanger = Temperature Difference of Minimum Fluid/Maximum Temperature Difference in Heat Exchanger
  • Effectiveness of Heat Exchanger = Temperature Difference of Minimum Fluid/Maximum Temperature Difference in Heat Exchanger
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