Convective Processes Heat Transfer Coefficient Calculator

✖The Heat Transfer Coefficient is the heat transferred per unit area per kelvin. Thus, area is included in the equation as it represents the area over which the transfer of heat takes place.ⓘ Heat Transfer Coefficient [h_t]			+10% -10%
✖Surface Temperature is the temperature at or near a surface. Specifically, it may refer to as Surface air temperature, the temperature of the air near the surface of the earth.ⓘ Surface Temperature [T_w]			+10% -10%
✖Recovery Temperature is the temperature in the boundary layer immediately adjacent to the surface of a perfect heat insulator.ⓘ Recovery Temperature [T_aw]			+10% -10%

✖Heat Flux is the heat transfer rate per unit area normal to the direction of heat flow. It is denoted by the letter "Q".ⓘ Convective Processes Heat Transfer Coefficient [Q]

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Formula

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Convective Processes Heat Transfer Coefficient

Formula

Q = h t \cdot (T w - T aw)

Example

69.432 W/m² = 13.2 W/m²*K \cdot (305 K - 299.74 K)

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Convective Processes Heat Transfer Coefficient Solution

STEP 0: Pre-Calculation Summary

Formula Used

Heat Flux = Heat Transfer Coefficient*(Surface Temperature-Recovery Temperature)
Q = h_t*(T_w-T_aw)
This formula uses 4 Variables

Variables Used

Heat Flux - (Measured in Watt per Square Meter) - Heat Flux is the heat transfer rate per unit area normal to the direction of heat flow. It is denoted by the letter "Q".
Heat Transfer Coefficient - (Measured in Watt per Square Meter per Kelvin) - The Heat Transfer Coefficient is the heat transferred per unit area per kelvin. Thus, area is included in the equation as it represents the area over which the transfer of heat takes place.
Surface Temperature - (Measured in Kelvin) - Surface Temperature is the temperature at or near a surface. Specifically, it may refer to as Surface air temperature, the temperature of the air near the surface of the earth.
Recovery Temperature - (Measured in Kelvin) - Recovery Temperature is the temperature in the boundary layer immediately adjacent to the surface of a perfect heat insulator.

STEP 1: Convert Input(s) to Base Unit

Heat Transfer Coefficient: 13.2 Watt per Square Meter per Kelvin --> 13.2 Watt per Square Meter per Kelvin No Conversion Required
Surface Temperature: 305 Kelvin --> 305 Kelvin No Conversion Required
Recovery Temperature: 299.74 Kelvin --> 299.74 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Q = h_t*(T_w-T_aw) --> 13.2*(305-299.74)

Evaluating ... ...

Q = 69.4319999999999

STEP 3: Convert Result to Output's Unit

69.4319999999999 Watt per Square Meter --> No Conversion Required

FINAL ANSWER

69.4319999999999 ≈ 69.432 Watt per Square Meter <-- Heat Flux

(Calculation completed in 00.004 seconds)

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Created by Kethavath Srinath

Osmania University (OU), Hyderabad

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< Boiling Calculators

Heat flux to nucleate pool boiling

Go Heat Flux = Dynamic Viscosity of Fluid*Change in Enthalpy of Vaporization*(([g]*(Density of Liquid-Density of Vapour))/(Surface Tension))^0.5*((Specific Heat of Liquid*Excess Temperature)/(Constant in Nucleate Boiling*Change in Enthalpy of Vaporization*(Prandtl Number)^1.7))^3.0

Enthalpy of evaporation to nucleate pool boiling

Go Change in Enthalpy of Vaporization = ((1/Heat Flux)*Dynamic Viscosity of Fluid*(([g]*(Density of Liquid-Density of Vapour))/(Surface Tension))^0.5*((Specific Heat of Liquid*Excess Temperature)/(Constant in Nucleate Boiling*(Prandtl Number)^1.7))^3)^0.5

Enthalpy of evaporation given critical heat flux

Go Change in Enthalpy of Vaporization = Critical Heat Flux/(0.18*Density of Vapour*((Surface Tension*[g]*(Density of Liquid-Density of Vapour))/(Density of Vapour^2))^0.25)

Critical heat flux to nucleate pool boiling

Go Critical Heat Flux = 0.18*Change in Enthalpy of Vaporization*Density of Vapour*((Surface Tension*[g]*(Density of Liquid-Density of Vapour))/(Density of Vapour^2))^0.25

< Conduction, Convection and Radiation Calculators

Heat Exchange by Radiation due to Geometric Arrangement

Go Heat Transfer = Emissivity*Area*[Stefan-BoltZ]*Shape Factor*(Temperature of Surface 1^(4)-Temperature of Surface 2^(4))

Heat Transfer According to Fourier's Law

Go Heat Flow Through a Body = -(Thermal Conductivity of Material*Surface Area of Heat Flow*Temperature Difference/Thickness of The Body)

Convective Processes Heat Transfer Coefficient

Go Heat Flux = Heat Transfer Coefficient*(Surface Temperature-Recovery Temperature)

Thermal Resistance in Convection Heat Transfer

Go Thermal Resistance = 1/(Exposed Surface Area*Coefficient of Convective Heat Transfer)

Convective Processes Heat Transfer Coefficient Formula

Heat Flux = Heat Transfer Coefficient*(Surface Temperature-Recovery Temperature)
Q = h_t*(T_w-T_aw)

What is heat transfer coefficient?

Heat transfer coefficient is a quantitative characteristic of convective heat transfer between a fluid medium (a fluid) and the surface (wall) flowed over by the fluid.
It is used in calculating the heat transfer, typically by convection or phase transition between a fluid and a solid

How to Calculate Convective Processes Heat Transfer Coefficient?

Convective Processes Heat Transfer Coefficient calculator uses Heat Flux = Heat Transfer Coefficient*(Surface Temperature-Recovery Temperature) to calculate the Heat Flux, Convective Processes Heat Transfer Coefficient, The law applies when the coefficient is independent, or relatively independent, of the temperature difference between object and environment. In classical natural convective heat transfer, the heat transfer coefficient is dependent on the temperature. Heat Flux is denoted by Q symbol.

How to calculate Convective Processes Heat Transfer Coefficient using this online calculator? To use this online calculator for Convective Processes Heat Transfer Coefficient, enter Heat Transfer Coefficient (h_t), Surface Temperature (T_w) & Recovery Temperature (T_aw) and hit the calculate button. Here is how the Convective Processes Heat Transfer Coefficient calculation can be explained with given input values -> 330 = 13.2*(305-299.74).

FAQ

What is Convective Processes Heat Transfer Coefficient?

Convective Processes Heat Transfer Coefficient, The law applies when the coefficient is independent, or relatively independent, of the temperature difference between object and environment. In classical natural convective heat transfer, the heat transfer coefficient is dependent on the temperature and is represented as Q = h_t*(T_w-T_aw) or Heat Flux = Heat Transfer Coefficient*(Surface Temperature-Recovery Temperature). The Heat Transfer Coefficient is the heat transferred per unit area per kelvin. Thus, area is included in the equation as it represents the area over which the transfer of heat takes place, Surface Temperature is the temperature at or near a surface. Specifically, it may refer to as Surface air temperature, the temperature of the air near the surface of the earth & Recovery Temperature is the temperature in the boundary layer immediately adjacent to the surface of a perfect heat insulator.

How to calculate Convective Processes Heat Transfer Coefficient?

Convective Processes Heat Transfer Coefficient, The law applies when the coefficient is independent, or relatively independent, of the temperature difference between object and environment. In classical natural convective heat transfer, the heat transfer coefficient is dependent on the temperature is calculated using Heat Flux = Heat Transfer Coefficient*(Surface Temperature-Recovery Temperature). To calculate Convective Processes Heat Transfer Coefficient, you need Heat Transfer Coefficient (h_t), Surface Temperature (T_w) & Recovery Temperature (T_aw). With our tool, you need to enter the respective value for Heat Transfer Coefficient, Surface Temperature & Recovery Temperature 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 Heat Flux?

In this formula, Heat Flux uses Heat Transfer Coefficient, Surface Temperature & Recovery Temperature. We can use 1 other way(s) to calculate the same, which is/are as follows -

Heat Flux = Dynamic Viscosity of Fluid*Change in Enthalpy of Vaporization*(([g]*(Density of Liquid-Density of Vapour))/(Surface Tension))^0.5*((Specific Heat of Liquid*Excess Temperature)/(Constant in Nucleate Boiling*Change in Enthalpy of Vaporization*(Prandtl Number)^1.7))^3.0

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