Heat transfer coefficient by convection for stable film boiling Solution

STEP 0: Pre-Calculation Summary
Formula Used
Heat Transfer Coefficient by Convection = 0.62*((((Thermal Conductivity of Vapor^3)*Density of Vapour*Acceleration due to Gravity*(Density of Liquid-Density of Vapour)*(Change in Enthalpy of Vaporization+(0.68*Specific Heat of Vapour)*Excess Temperature))/(Dynamic Viscosity of Vapour*Diameter*Excess Temperature))^0.25)
hc = 0.62*((((kv^3)*ρv*g*(ρl-ρv)*(∆Hvap+(0.68*Cv)*ΔT))/(μv*D*ΔT))^0.25)
This formula uses 10 Variables
Variables Used
Heat Transfer Coefficient by Convection - (Measured in Watt per Square Meter per Kelvin) - Heat Transfer Coefficient by Convection is the heat transferred per unit area per kelvin.
Thermal Conductivity of Vapor - (Measured in Watt per Meter per K) - Thermal conductivity of vapor is defined as the transport of energy due to random molecular motion across a temperature gradient.
Density of Vapour - (Measured in Kilogram per Cubic Meter) - The Density of Vapour is the mass of a unit volume of a material substance.
Acceleration due to Gravity - (Measured in Meter per Square Second) - Acceleration due to Gravity is acceleration gained by an object because of gravitational force.
Density of Liquid - (Measured in Kilogram per Cubic Meter) - Density of Liquid is mass of a unit volume of a material substance.
Change in Enthalpy of Vaporization - (Measured in Joule Per Mole) - Change in Enthalpy of Vaporization is the amount of energy (enthalpy) that must be added to a liquid substance to transform a quantity of that substance into a gas.
Specific Heat of Vapour - (Measured in Joule per Kilogram per K) - Specific Heat of Vapour is the amount of heat per unit mass required to raise the temperature by one degree Celsius.
Excess Temperature - (Measured in Kelvin) - Excess temperature is defined as the temperature difference between heat source and saturation temperature of the fluid.
Dynamic Viscosity of Vapour - (Measured in Pascal Second) - Dynamic Viscosity of Vapour is the resistance to movement of one layer of a fluid over another.
Diameter - (Measured in Meter) - Diameter is a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
STEP 1: Convert Input(s) to Base Unit
Thermal Conductivity of Vapor: 14 Watt per Meter per K --> 14 Watt per Meter per K No Conversion Required
Density of Vapour: 0.5 Kilogram per Cubic Meter --> 0.5 Kilogram per Cubic Meter No Conversion Required
Acceleration due to Gravity: 9.8 Meter per Square Second --> 9.8 Meter per Square Second No Conversion Required
Density of Liquid: 4 Kilogram per Cubic Meter --> 4 Kilogram per Cubic Meter No Conversion Required
Change in Enthalpy of Vaporization: 500 Joule Per Mole --> 500 Joule Per Mole No Conversion Required
Specific Heat of Vapour: 5 Joule per Kilogram per K --> 5 Joule per Kilogram per K No Conversion Required
Excess Temperature: 12 Kelvin --> 12 Kelvin No Conversion Required
Dynamic Viscosity of Vapour: 16 Pascal Second --> 16 Pascal Second No Conversion Required
Diameter: 10 Meter --> 10 Meter No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
hc = 0.62*((((kv^3)*ρv*g*(ρlv)*(∆Hvap+(0.68*Cv)*ΔT))/(μv*D*ΔT))^0.25) --> 0.62*((((14^3)*0.5*9.8*(4-0.5)*(500+(0.68*5)*12))/(16*10*12))^0.25)
Evaluating ... ...
hc = 6.65254178267727
STEP 3: Convert Result to Output's Unit
6.65254178267727 Watt per Square Meter per Kelvin --> No Conversion Required
FINAL ANSWER
6.65254178267727 6.652542 Watt per Square Meter per Kelvin <-- Heat Transfer Coefficient by Convection
(Calculation completed in 00.004 seconds)

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11 Boiling Calculators

Maximum heat flux to nucleate pool boiling
Go Heat Flux = (1.464*10^-9)*(((Specific Heat of Liquid*(Thermal Conductivity of Liquid^2)*(Density of Liquid^0.5)*(Density of Liquid-Density of Vapour))/(Density of Vapour*Change in Enthalpy of Vaporization*Dynamic Viscosity of Fluid^0.5))^0.5)*(((Change in Enthalpy of Vaporization*Density of Vapour*Excess Temperature)/(Surface Tension*Temperature of Fluid))^2.3)
Heat transfer coefficient by convection for stable film boiling
Go Heat Transfer Coefficient by Convection = 0.62*((((Thermal Conductivity of Vapor^3)*Density of Vapour*Acceleration due to Gravity*(Density of Liquid-Density of Vapour)*(Change in Enthalpy of Vaporization+(0.68*Specific Heat of Vapour)*Excess Temperature))/(Dynamic Viscosity of Vapour*Diameter*Excess Temperature))^0.25)
Heat flux to nucleate pool boiling
Go Heat Flux = Dynamic Viscosity of Fluid*Change in Enthalpy of Vaporization*(((Acceleration due to Gravity*(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))^3.0)
Enthalpy of evaporation to nucleate pool boiling
Go Change in Enthalpy of Vaporization = ((1/Heat Flux)*Dynamic Viscosity of Fluid*((Acceleration due to Gravity*(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 = Heat Flux/(0.18*Density of Vapour*(((Surface Tension*Acceleration due to Gravity*(Density of Liquid-Density of Vapour))/(Density of Vapour^2))^0.25))
Critical heat flux to nucleate pool boiling
Go Heat Flux = 0.18*Change in Enthalpy of Vaporization*Density of Vapour*((Surface Tension*Acceleration due to Gravity*(Density of Liquid-Density of Vapour))/(Density of Vapour^2))^0.25
Heat transfer coefficient due to radiation for horizontal tubes
Go Heat Transfer Coefficient by Radiation = [Stefan-BoltZ]*Emissivity*(((Wall Temperature^4)-(Saturation Temperature^4))/(Wall Temperature-Saturation Temperature))
Emissivity given heat transfer coefficient by radiation
Go Emissivity = Heat Transfer Coefficient by Radiation/([Stefan-BoltZ]*((Wall Temperature^4-Saturation Temperature^4)/(Wall Temperature-Saturation Temperature)))
Heat transfer coefficient by radiation
Go Heat Transfer Coefficient by Radiation = (Heat Transfer Coefficient by Boiling-Heat Transfer Coefficient by Convection)/0.75
Heat transfer coefficient in film boiling
Go Heat Transfer Coefficient by Boiling = Heat Transfer Coefficient by Convection+0.75*Heat Transfer Coefficient by Radiation
Heat transfer coefficient for convection
Go Heat Transfer Coefficient by Convection = Heat Transfer Coefficient by Boiling-0.75*Heat Transfer Coefficient by Radiation

Heat transfer coefficient by convection for stable film boiling Formula

Heat Transfer Coefficient by Convection = 0.62*((((Thermal Conductivity of Vapor^3)*Density of Vapour*Acceleration due to Gravity*(Density of Liquid-Density of Vapour)*(Change in Enthalpy of Vaporization+(0.68*Specific Heat of Vapour)*Excess Temperature))/(Dynamic Viscosity of Vapour*Diameter*Excess Temperature))^0.25)
hc = 0.62*((((kv^3)*ρv*g*(ρl-ρv)*(∆Hvap+(0.68*Cv)*ΔT))/(μv*D*ΔT))^0.25)

What is boiling

Boiling is the rapid vaporization of a liquid, which occurs when a liquid is heated to its boiling point, the temperature at which the vapour pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere.

How to Calculate Heat transfer coefficient by convection for stable film boiling?

Heat transfer coefficient by convection for stable film boiling calculator uses Heat Transfer Coefficient by Convection = 0.62*((((Thermal Conductivity of Vapor^3)*Density of Vapour*Acceleration due to Gravity*(Density of Liquid-Density of Vapour)*(Change in Enthalpy of Vaporization+(0.68*Specific Heat of Vapour)*Excess Temperature))/(Dynamic Viscosity of Vapour*Diameter*Excess Temperature))^0.25) to calculate the Heat Transfer Coefficient by Convection, The Heat transfer coefficient by convection for stable film boiling formula is defined as the heat transferred per unit area per kelvin. Heat Transfer Coefficient by Convection is denoted by hc symbol.

How to calculate Heat transfer coefficient by convection for stable film boiling using this online calculator? To use this online calculator for Heat transfer coefficient by convection for stable film boiling, enter Thermal Conductivity of Vapor (kv), Density of Vapour v), Acceleration due to Gravity (g), Density of Liquid l), Change in Enthalpy of Vaporization (∆Hvap), Specific Heat of Vapour (Cv), Excess Temperature (ΔT), Dynamic Viscosity of Vapour v) & Diameter (D) and hit the calculate button. Here is how the Heat transfer coefficient by convection for stable film boiling calculation can be explained with given input values -> 6.652542 = 0.62*((((14^3)*0.5*9.8*(4-0.5)*(500+(0.68*5)*12))/(16*10*12))^0.25).

FAQ

What is Heat transfer coefficient by convection for stable film boiling?
The Heat transfer coefficient by convection for stable film boiling formula is defined as the heat transferred per unit area per kelvin and is represented as hc = 0.62*((((kv^3)*ρv*g*(ρlv)*(∆Hvap+(0.68*Cv)*ΔT))/(μv*D*ΔT))^0.25) or Heat Transfer Coefficient by Convection = 0.62*((((Thermal Conductivity of Vapor^3)*Density of Vapour*Acceleration due to Gravity*(Density of Liquid-Density of Vapour)*(Change in Enthalpy of Vaporization+(0.68*Specific Heat of Vapour)*Excess Temperature))/(Dynamic Viscosity of Vapour*Diameter*Excess Temperature))^0.25). Thermal conductivity of vapor is defined as the transport of energy due to random molecular motion across a temperature gradient, The Density of Vapour is the mass of a unit volume of a material substance, Acceleration due to Gravity is acceleration gained by an object because of gravitational force, Density of Liquid is mass of a unit volume of a material substance, Change in Enthalpy of Vaporization is the amount of energy (enthalpy) that must be added to a liquid substance to transform a quantity of that substance into a gas, Specific Heat of Vapour is the amount of heat per unit mass required to raise the temperature by one degree Celsius, Excess temperature is defined as the temperature difference between heat source and saturation temperature of the fluid, Dynamic Viscosity of Vapour is the resistance to movement of one layer of a fluid over another & Diameter is a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
How to calculate Heat transfer coefficient by convection for stable film boiling?
The Heat transfer coefficient by convection for stable film boiling formula is defined as the heat transferred per unit area per kelvin is calculated using Heat Transfer Coefficient by Convection = 0.62*((((Thermal Conductivity of Vapor^3)*Density of Vapour*Acceleration due to Gravity*(Density of Liquid-Density of Vapour)*(Change in Enthalpy of Vaporization+(0.68*Specific Heat of Vapour)*Excess Temperature))/(Dynamic Viscosity of Vapour*Diameter*Excess Temperature))^0.25). To calculate Heat transfer coefficient by convection for stable film boiling, you need Thermal Conductivity of Vapor (kv), Density of Vapour v), Acceleration due to Gravity (g), Density of Liquid l), Change in Enthalpy of Vaporization (∆Hvap), Specific Heat of Vapour (Cv), Excess Temperature (ΔT), Dynamic Viscosity of Vapour v) & Diameter (D). With our tool, you need to enter the respective value for Thermal Conductivity of Vapor, Density of Vapour, Acceleration due to Gravity, Density of Liquid, Change in Enthalpy of Vaporization, Specific Heat of Vapour, Excess Temperature, Dynamic Viscosity of Vapour & Diameter 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 Transfer Coefficient by Convection?
In this formula, Heat Transfer Coefficient by Convection uses Thermal Conductivity of Vapor, Density of Vapour, Acceleration due to Gravity, Density of Liquid, Change in Enthalpy of Vaporization, Specific Heat of Vapour, Excess Temperature, Dynamic Viscosity of Vapour & Diameter. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Heat Transfer Coefficient by Convection = Heat Transfer Coefficient by Boiling-0.75*Heat Transfer Coefficient by Radiation
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