Overall heat transfer coefficient given LMTD Calculator

✖Heat exchanged is the amount of heat transferred between two objects.ⓘ Heat exchanged [Q]			+10% -10%
✖Correction Factor is that which is multiplied with the result of an equation to correct for a known amount of systematic error.ⓘ Correction Factor [f]			+10% -10%
✖The area is the amount of two-dimensional space taken up by an object.ⓘ Area [A]			+10% -10%
✖Logarithmic Mean Temperature Difference is the log of the mean of the temperature values.ⓘ Logarithmic Mean Temperature Difference [ΔT_m]			+10% -10%

✖Overall heat transfer coefficient is the overall convective heat transfer between a fluid medium (a fluid) and the surface (wall) flowed over by the fluid.ⓘ Overall heat transfer coefficient given LMTD [U]

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Overall heat transfer coefficient given LMTD Solution

STEP 0: Pre-Calculation Summary

Formula Used

Overall Heat Transfer Coefficient = Heat exchanged/(Correction Factor*Area*Logarithmic Mean Temperature Difference)
U = Q/(f*A*ΔT_m)
This formula uses 5 Variables

Variables Used

Overall Heat Transfer Coefficient - (Measured in Watt per Square Meter per Kelvin) - Overall heat transfer coefficient is the overall convective heat transfer between a fluid medium (a fluid) and the surface (wall) flowed over by the fluid.
Heat exchanged - (Measured in Watt) - Heat exchanged is the amount of heat transferred between two objects.
Correction Factor - Correction Factor is that which is multiplied with the result of an equation to correct for a known amount of systematic error.
Area - (Measured in Square Meter) - The area is the amount of two-dimensional space taken up by an object.
Logarithmic Mean Temperature Difference - Logarithmic Mean Temperature Difference is the log of the mean of the temperature values.

STEP 1: Convert Input(s) to Base Unit

Heat exchanged: 50 Watt --> 50 Watt No Conversion Required
Correction Factor: 0.5 --> No Conversion Required
Area: 50 Square Meter --> 50 Square Meter No Conversion Required
Logarithmic Mean Temperature Difference: 30 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

U = Q/(f*A*ΔT_m) --> 50/(0.5*50*30)

Evaluating ... ...

U = 0.0666666666666667

STEP 3: Convert Result to Output's Unit

0.0666666666666667 Watt per Square Meter per Kelvin --> No Conversion Required

FINAL ANSWER

0.0666666666666667 ≈ 0.066667 Watt per Square Meter per Kelvin <-- Overall Heat Transfer Coefficient

(Calculation completed in 00.004 seconds)

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Home » Physics » Heat and Mass Transfer » Heat Exchanger » Mechanical » Thermal Parameters of Heat Exchanger » Overall heat transfer coefficient given LMTD

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< Thermal Parameters of Heat Exchanger Calculators

Logarithmic mean temperature difference for single pass counter flow

LaTeX Go Logarithmic Mean Temperature Difference = ((Entry Temperature of Hot Fluid-Exit Temperature of Cold Fluid)-(Entry Temperature of Cold Fluid-Exit Temperature of Hot Fluid))/ln((Entry Temperature of Hot Fluid-Exit Temperature of Cold Fluid)/(Entry Temperature of Cold Fluid-Exit Temperature of Hot Fluid))

Overall heat transfer coefficient given LMTD

LaTeX Go Overall Heat Transfer Coefficient = Heat exchanged/(Correction Factor*Area*Logarithmic Mean Temperature Difference)

Logarithmic mean temperature difference

LaTeX Go Logarithmic Mean Temperature Difference = Heat exchanged/(Correction Factor*Overall Heat Transfer Coefficient*Area)

Heat exchanged

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

Overall heat transfer coefficient given LMTD Formula

LaTeX Go

Overall Heat Transfer Coefficient = Heat exchanged/(Correction Factor*Area*Logarithmic Mean Temperature Difference)
U = Q/(f*A*ΔT_m)

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 Overall heat transfer coefficient given LMTD?

Overall heat transfer coefficient given LMTD calculator uses Overall Heat Transfer Coefficient = Heat exchanged/(Correction Factor*Area*Logarithmic Mean Temperature Difference) to calculate the Overall Heat Transfer Coefficient, Overall heat transfer coefficient given LMTD formula is defined as a measure of the efficiency of heat transfer in a heat exchanger, taking into account the logarithmic mean temperature difference and the heat transfer area. Overall Heat Transfer Coefficient is denoted by U symbol.

How to calculate Overall heat transfer coefficient given LMTD using this online calculator? To use this online calculator for Overall heat transfer coefficient given LMTD, enter Heat exchanged (Q), Correction Factor (f), Area (A) & Logarithmic Mean Temperature Difference (ΔT_m) and hit the calculate button. Here is how the Overall heat transfer coefficient given LMTD calculation can be explained with given input values -> 0.066667 = 50/(0.5*50*30).

FAQ

What is Overall heat transfer coefficient given LMTD?

Overall heat transfer coefficient given LMTD formula is defined as a measure of the efficiency of heat transfer in a heat exchanger, taking into account the logarithmic mean temperature difference and the heat transfer area and is represented as U = Q/(f*A*ΔT_m) or Overall Heat Transfer Coefficient = Heat exchanged/(Correction Factor*Area*Logarithmic Mean Temperature Difference). Heat exchanged is the amount of heat transferred between two objects, Correction Factor is that which is multiplied with the result of an equation to correct for a known amount of systematic error, The area is the amount of two-dimensional space taken up by an object & Logarithmic Mean Temperature Difference is the log of the mean of the temperature values.

How to calculate Overall heat transfer coefficient given LMTD?

Overall heat transfer coefficient given LMTD formula is defined as a measure of the efficiency of heat transfer in a heat exchanger, taking into account the logarithmic mean temperature difference and the heat transfer area is calculated using Overall Heat Transfer Coefficient = Heat exchanged/(Correction Factor*Area*Logarithmic Mean Temperature Difference). To calculate Overall heat transfer coefficient given LMTD, you need Heat exchanged (Q), Correction Factor (f), Area (A) & Logarithmic Mean Temperature Difference (ΔT_m). With our tool, you need to enter the respective value for Heat exchanged, Correction Factor, Area & Logarithmic Mean Temperature Difference and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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