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Effectiveness NTU method Formula

GoEffectiveness in double pipe parallel flow heat exchanger Formula

GoEffectiveness of double pipe counter flow heat exchanger Formula

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The effectiveness of heat exchanger is defined as the ratio of the actual heat transfer to the maximum possible heat transfer. Check FAQs

ϵ = \frac{Q}{C min \cdot (T1 - t1)}

ϵ - Effectiveness of Heat Exchanger?Q - Heat exchanged?C_min - Smaller Value?T1 - Entry Temperature of Hot Fluid?t1 - Entry Temperature of Cold Fluid?

Effectiveness NTU method Example

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Here is how the Effectiveness NTU method equation looks like with Values.

Here is how the Effectiveness NTU method equation looks like with Units.

Here is how the Effectiveness NTU method equation looks like.

0.0333 = \frac{50}{30 \cdot (60 - 10)}

0.0333 = \frac{50W}{30 \cdot (60K - 10K)}

0.0333 = \frac{50}{30 \cdot (60 - 10)}

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Effectiveness NTU method Solution

Follow our step by step solution on how to calculate Effectiveness NTU method?

FIRST Step Consider the formula

ϵ = \frac{Q}{C min \cdot (T1 - t1)}

Next Step Substitute values of Variables

∴

ϵ = \frac{50W}{30 \cdot (60K - 10K)}

Next Step Prepare to Evaluate

∴

ϵ = \frac{50}{30 \cdot (60 - 10)}

Next Step Evaluate

∴

ϵ = 0.0333333333333333

LAST Step Rounding Answer

∴

ϵ = 0.0333

Effectiveness NTU method Formula Elements

Variables

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.

Symbol: ϵ

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Effectiveness of Heat Exchanger

Heat exchanged

Heat exchanged is the amount of heat transferred between two objects.

Symbol: Q

Measurement: PowerUnit: W

Note: Value can be positive or negative.

Formulas to find Heat exchanged

Smaller Value

Smaller value of mass flowrate of hot fluid * specific heat of hot fluid and mass flowrate of cold fluid * specific heat of cold fluid.

Symbol: C_min

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Smaller Value

Entry Temperature of Hot Fluid

Entry temperature of hot fluid is the temperature of the hot fluid at entry.

Symbol: T1

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Entry Temperature of Hot Fluid

Entry Temperature of Cold Fluid

Entry temperature of cold fluid is the temperature of the cold fluid at entry.

Symbol: t1

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Entry Temperature of Cold Fluid

Other Formulas to find Effectiveness of Heat Exchanger

Go Effectiveness in double pipe parallel flow heat exchanger

ϵ = \frac{1 - \exp (- 1 \cdot NTU \cdot (1 + C))}{1 + C}

Go Effectiveness of double pipe counter flow heat exchanger

ϵ = \frac{1 - \exp (- 1 \cdot NTU \cdot (1 - C))}{1 - C \cdot \exp (- 1 \cdot NTU \cdot (1 - C))}

Go Effectiveness of double pipe counter flow heat exchanger given C equal to 1

ϵ = \frac{NTU}{1 + NTU}

Go Effectiveness when mc-cc is minimum value

ϵ = (mc \cdot \frac{cc}{C min}) \cdot (\frac{t2 - t1}{T1 - t1})

How to Evaluate Effectiveness NTU method?

Effectiveness NTU method evaluator uses Effectiveness of Heat Exchanger = Heat exchanged/(Smaller Value*(Entry Temperature of Hot Fluid-Entry Temperature of Cold Fluid)) to evaluate the Effectiveness of Heat Exchanger, The Effectiveness NTU method formula is defined as the ratio of the actual heat transfer to the maximum possible heat transfer. Effectiveness of Heat Exchanger is denoted by ϵ symbol.

How to evaluate Effectiveness NTU method using this online evaluator? To use this online evaluator for Effectiveness NTU method, enter Heat exchanged (Q), Smaller Value (C_min), Entry Temperature of Hot Fluid (T1) & Entry Temperature of Cold Fluid (t1) and hit the calculate button.

FAQs on Effectiveness NTU method

What is the formula to find Effectiveness NTU method?

The formula of Effectiveness NTU method is expressed as Effectiveness of Heat Exchanger = Heat exchanged/(Smaller Value*(Entry Temperature of Hot Fluid-Entry Temperature of Cold Fluid)). Here is an example- 0.033333 = 50/(30*(60-10)).

How to calculate Effectiveness NTU method?

With Heat exchanged (Q), Smaller Value (C_min), Entry Temperature of Hot Fluid (T1) & Entry Temperature of Cold Fluid (t1) we can find Effectiveness NTU method using the formula - Effectiveness of Heat Exchanger = Heat exchanged/(Smaller Value*(Entry Temperature of Hot Fluid-Entry Temperature of Cold Fluid)).

What are the other ways to Calculate Effectiveness of Heat Exchanger?

Here are the different ways to Calculate Effectiveness of Heat Exchanger-

Effectiveness of Heat Exchanger=(1-exp(-1*Number of Transfer Units*(1+Heat capacity ratio)))/(1+Heat capacity ratio)
Effectiveness of Heat Exchanger=(1-exp(-1*Number of Transfer Units*(1-Heat capacity ratio)))/(1-Heat capacity ratio*exp(-1*Number of Transfer Units*(1-Heat capacity ratio)))
Effectiveness of Heat Exchanger=Number of Transfer Units/(1+Number of Transfer Units)

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: Unit

Effectiveness NTU method Formula

​GoEffectiveness in double pipe parallel flow heat exchanger Formula

​GoEffectiveness of double pipe counter flow heat exchanger Formula

Effectiveness NTU method Example

Effectiveness NTU method Solution

Effectiveness NTU method Formula Elements

Other Formulas to find Effectiveness of Heat Exchanger

How to Evaluate Effectiveness NTU method?

FAQs on Effectiveness NTU method

Variable Name

GoEffectiveness in double pipe parallel flow heat exchanger Formula

GoEffectiveness of double pipe counter flow heat exchanger Formula