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Heat exchanged NTU method Formula

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

Q = ϵ \cdot C min \cdot (T1 - t1)

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

Heat exchanged NTU method Example

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

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

Here is how the Heat exchanged NTU method equation looks like.

12000 = 8 \cdot 30 \cdot (60 - 10)

12000W = 8 \cdot 30 \cdot (60K - 10K)

12000 = 8 \cdot 30 \cdot (60 - 10)

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Heat exchanged NTU method Solution

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

FIRST Step Consider the formula

Q = ϵ \cdot C min \cdot (T1 - t1)

Next Step Substitute values of Variables

∴

Q = 8 \cdot 30 \cdot (60K - 10K)

Next Step Prepare to Evaluate

∴

Q = 8 \cdot 30 \cdot (60 - 10)

LAST Step Evaluate

∴

Q = 12000W

Heat exchanged NTU method Formula Elements

Variables

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

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

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 Heat exchanged

Go Heat exchanged

Q = f \cdot U \cdot A \cdot ΔT m

Other formulas in Thermal Parameters of Heat Exchanger category

Go Logarithmic mean temperature difference for single pass counter flow

ΔT m = \frac{(T1 - t2) - (t1 - T2)}{\ln (\frac{T1 - t2}{t1 - T2})}

Go Overall heat transfer coefficient given LMTD

U = \frac{Q}{f \cdot A \cdot ΔT m}

Go Logarithmic mean temperature difference

ΔT m = \frac{Q}{f \cdot U \cdot A}

Go Entry temperature of cold fluid

t1 = T1 - (\frac{Q}{ϵ \cdot C min})

How to Evaluate Heat exchanged NTU method?

Heat exchanged NTU method evaluator uses Heat exchanged = Effectiveness of Heat Exchanger*Smaller Value*(Entry Temperature of Hot Fluid-Entry Temperature of Cold Fluid) to evaluate the Heat exchanged, Heat exchanged NTU method formula is defined as a technique used to analyze the performance of heat exchangers by relating the heat transfer rate to the effectiveness and the minimum heat capacity rate, facilitating efficient thermal design and evaluation. Heat exchanged is denoted by Q symbol.

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

FAQs on Heat exchanged NTU method

What is the formula to find Heat exchanged NTU method?

The formula of Heat exchanged NTU method is expressed as Heat exchanged = Effectiveness of Heat Exchanger*Smaller Value*(Entry Temperature of Hot Fluid-Entry Temperature of Cold Fluid). Here is an example- 12000 = 8*30*(60-10).

How to calculate Heat exchanged NTU method?

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

What are the other ways to Calculate Heat exchanged?

Here are the different ways to Calculate Heat exchanged-

Heat exchanged=Correction Factor*Overall Heat Transfer Coefficient*Area*Logarithmic Mean Temperature Difference

Can the Heat exchanged NTU method be negative?

Yes, the Heat exchanged NTU method, measured in Power can be negative.

Which unit is used to measure Heat exchanged NTU method?

Heat exchanged NTU method is usually measured using the Watt[W] for Power. Kilowatt[W], Milliwatt[W], Microwatt[W] are the few other units in which Heat exchanged NTU method can be measured.

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Heat exchanged NTU method Formula

​GoHeat exchanged Formula

Heat exchanged NTU method Example

Heat exchanged NTU method Solution

Heat exchanged NTU method Formula Elements

Other Formulas to find Heat exchanged

Other formulas in Thermal Parameters of Heat Exchanger category

How to Evaluate Heat exchanged NTU method?

FAQs on Heat exchanged NTU method

Variable Name

GoHeat exchanged Formula