Heat flow required Calculator

✖The area is the amount of two-dimensional space taken up by an object.ⓘ Area [A]			+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 [U_overall]			+10% -10%
✖Logarithmic Mean Temperature Difference is the log of the mean of the temperature values.ⓘ Logarithmic Mean Temperature Difference [ΔT_m]			+10% -10%

✖Heat Flow Rate is the amount of heat that is transferred per unit of time in some material, usually measured in watt. Heat is the flow of thermal energy driven by thermal non-equilibrium.ⓘ Heat flow required [Q]

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Heat flow required Solution

STEP 0: Pre-Calculation Summary

Formula Used

Heat Flow Rate = Area*Overall Heat Transfer Coefficient*Logarithmic Mean Temperature Difference
Q = A*U_overall*ΔT_m
This formula uses 4 Variables

Variables Used

Heat Flow Rate - (Measured in Watt) - Heat Flow Rate is the amount of heat that is transferred per unit of time in some material, usually measured in watt. Heat is the flow of thermal energy driven by thermal non-equilibrium.
Area - (Measured in Square Meter) - The area is the amount of two-dimensional space taken up by an object.
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.
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

Area: 50 Square Meter --> 50 Square Meter No Conversion Required
Overall Heat Transfer Coefficient: 0.25 Watt per Square Meter per Kelvin --> 0.25 Watt per Square Meter per Kelvin No Conversion Required
Logarithmic Mean Temperature Difference: 30 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Q = A*U_overall*ΔT_m --> 50*0.25*30

Evaluating ... ...

Q = 375

STEP 3: Convert Result to Output's Unit

375 Watt --> No Conversion Required

FINAL ANSWER

375 Watt <-- Heat Flow Rate

(Calculation completed in 00.020 seconds)

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Home » Physics » Heat and Mass Transfer » Heat Exchanger » Transverse Fin Heat Exchanger » Mechanical » Heat Transfer Through Fin » Heat flow required

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Created by Nishan Poojary

Shri Madhwa Vadiraja Institute of Technology and Management (SMVITM), Udupi

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< Heat Transfer Through Fin Calculators

Overall heat transfer coefficient

LaTeX Go Overall Heat Transfer Coefficient = Heat Flow Rate/(Area*Logarithmic Mean Temperature Difference)

Heat flow required

LaTeX Go Heat Flow Rate = Area*Overall Heat Transfer Coefficient*Logarithmic Mean Temperature Difference

Mass flux of fluid in transverse fin heat exchanger

LaTeX Go Mass Flux = (Reynolds Number(e)*Viscosity of Fluid)/Equivalent Diameter

Reynolds number in heat exchanger

LaTeX Go Reynolds Number = (Mass Flux*Equivalent Diameter)/(Viscosity of Fluid)

Heat flow required Formula

LaTeX Go

Heat Flow Rate = Area*Overall Heat Transfer Coefficient*Logarithmic Mean Temperature Difference
Q = A*U_overall*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 Heat flow required?

Heat flow required calculator uses Heat Flow Rate = Area*Overall Heat Transfer Coefficient*Logarithmic Mean Temperature Difference to calculate the Heat Flow Rate, The Heat flow required formula is defined as amount of heat flow required between the fluid and the wall surface for effective heat transfer. Heat Flow Rate is denoted by Q symbol.

How to calculate Heat flow required using this online calculator? To use this online calculator for Heat flow required, enter Area (A), Overall Heat Transfer Coefficient (U_overall) & Logarithmic Mean Temperature Difference (ΔT_m) and hit the calculate button. Here is how the Heat flow required calculation can be explained with given input values -> 375 = 50*0.25*30.

FAQ

What is Heat flow required?

The Heat flow required formula is defined as amount of heat flow required between the fluid and the wall surface for effective heat transfer and is represented as Q = A*U_overall*ΔT_m or Heat Flow Rate = Area*Overall Heat Transfer Coefficient*Logarithmic Mean Temperature Difference. The area is the amount of two-dimensional space taken up by an object, 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 & Logarithmic Mean Temperature Difference is the log of the mean of the temperature values.

How to calculate Heat flow required?

The Heat flow required formula is defined as amount of heat flow required between the fluid and the wall surface for effective heat transfer is calculated using Heat Flow Rate = Area*Overall Heat Transfer Coefficient*Logarithmic Mean Temperature Difference. To calculate Heat flow required, you need Area (A), Overall Heat Transfer Coefficient (U_overall) & Logarithmic Mean Temperature Difference (ΔT_m). With our tool, you need to enter the respective value for Area, Overall Heat Transfer Coefficient & 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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