Modified Heat of Vaporization Calculator

✖Latent Heat of Vaporization is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure.ⓘ Latent Heat of Vaporization [h_fg]			+10% -10%
✖Specific heat of Water Vapor is the heat required to raise the temperature of water vapor by one degree to that required to raise the temperature of an equal mass of water one degree.ⓘ Specific Heat of Water Vapor [c_pv]			+10% -10%
✖Plate Surface Temperature is the temperature at the surface of the plate.ⓘ Plate Surface Temperature [T_w]			+10% -10%
✖Saturation temperature is the temperature at which a given liquid and its vapour or a given solid and its vapour can co-exist in equilibrium, at a given pressure.ⓘ Saturation Temperature [T_Sat]			+10% -10%

✖Modified Heat of Vaporization is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure.ⓘ Modified Heat of Vaporization [λ]

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Formula

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Modified Heat of Vaporization

Formula

`"λ" = ("h"_{"fg"}+("c"_{"pv"})*(("T"_{"w"}-"T"_{"Sat"})/2))`

Example

`"2636J/kg"=("2260J/kg"+("23.5J/(kg*K)")*(("405K"-"373K")/2))`

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Modified Heat of Vaporization Solution

STEP 0: Pre-Calculation Summary

Formula Used

Modified Heat of Vaporization = (Latent Heat of Vaporization+(Specific Heat of Water Vapor)*((Plate Surface Temperature-Saturation Temperature)/2))
λ = (h_fg+(c_pv)*((T_w-T_Sat)/2))
This formula uses 5 Variables

Variables Used

Modified Heat of Vaporization - (Measured in Joule per Kilogram) - Modified Heat of Vaporization is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure.
Latent Heat of Vaporization - (Measured in Joule per Kilogram) - Latent Heat of Vaporization is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure.
Specific Heat of Water Vapor - (Measured in Joule per Kilogram per K) - Specific heat of Water Vapor is the heat required to raise the temperature of water vapor by one degree to that required to raise the temperature of an equal mass of water one degree.
Plate Surface Temperature - (Measured in Kelvin) - Plate Surface Temperature is the temperature at the surface of the plate.
Saturation Temperature - (Measured in Kelvin) - Saturation temperature is the temperature at which a given liquid and its vapour or a given solid and its vapour can co-exist in equilibrium, at a given pressure.

STEP 1: Convert Input(s) to Base Unit

Latent Heat of Vaporization: 2260 Joule per Kilogram --> 2260 Joule per Kilogram No Conversion Required
Specific Heat of Water Vapor: 23.5 Joule per Kilogram per K --> 23.5 Joule per Kilogram per K No Conversion Required
Plate Surface Temperature: 405 Kelvin --> 405 Kelvin No Conversion Required
Saturation Temperature: 373 Kelvin --> 373 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

λ = (h_fg+(c_pv)*((T_w-T_Sat)/2)) --> (2260+(23.5)*((405-373)/2))

Evaluating ... ...

λ = 2636

STEP 3: Convert Result to Output's Unit

2636 Joule per Kilogram --> No Conversion Required

FINAL ANSWER

2636 Joule per Kilogram <-- Modified Heat of Vaporization

(Calculation completed in 00.004 seconds)

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Created by Ayush gupta

University School of Chemical Technology-USCT (GGSIPU), New Delhi

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< 14 Boiling Calculators

Radius of Vapour Bubble in Mechanical Equilibrium in Superheated Liquid

Go Radius of Vapor Bubble = (2*Surface Tension*[R]*(Saturation Temperature^2))/(Pressure of Superheated Liquid*Enthalpy of Vaporization of Liquid*(Temperature of Superheated Liquid-Saturation Temperature))

Critical Heat Flux by Zuber

Go Critical Heat Flux = ((0.149*Enthalpy of Vaporization of Liquid*Density of Vapor)*(((Surface Tension*[g])*(Density of Liquid-Density of Vapor))/(Density of Vapor^2))^(1/4))

Radiation Heat Transfer Coefficient

Go Radiation Heat Transfer Coefficient = (([Stefan-BoltZ]*Emissivity*(((Plate Surface Temperature)^4)-((Saturation Temperature)^4)))/(Plate Surface Temperature-Saturation Temperature))

Total Heat Transfer Coefficient

Go Total Heat Transfer Coefficient = Heat Transfer Coefficient in Film Boiling Region*((Heat Transfer Coefficient in Film Boiling Region/Heat Transfer Coefficient)^(1/3))+Radiation Heat Transfer Coefficient

Modified Heat of Vaporization

Go Modified Heat of Vaporization = (Latent Heat of Vaporization+(Specific Heat of Water Vapor)*((Plate Surface Temperature-Saturation Temperature)/2))

Modified Heat Transfer Coefficient under Influence of Pressure

Go Heat Transfer Coefficient at Some Pressure P = (Heat Transfer Coefficient at Atmospheric Pressure)*((System Pressure/Standard Atmospheric Pressure)^(0.4))

Correlation for Heat Flux proposed by Mostinski

Go Heat Transfer Coefficient For Nucleate Boiling = 0.00341*(Critical Pressure^2.3)*(Excess Temperature in Nucleate Boiling^2.33)*(Reduced Pressure^0.566)

Heat Transfer Coefficient for Forced Convection Local Boiling Inside Vertical Tubes

Go Heat Transfer Coefficient for Forced Convection = (2.54*((Excess Temperature)^3)*exp((System Pressure in Vertical Tubes)/1.551))

Heat Flux in Fully Developed Boiling State for Higher Pressures

Go Rate of Heat Transfer = 283.2*Area*((Excess Temperature)^(3))*((Pressure)^(4/3))

Heat Transfer Coefficient given Biot Number

Go Heat Transfer Coefficient = (Biot Number*Thermal Conductivity)/Thickness of Wall

Saturated Temperature given Excess Temperature

Go Saturation Temperature = Surface Temperature-Excess Temperature in Heat Transfer

Surface Temperature given Excess Temperature

Go Surface Temperature = Saturation Temperature+Excess Temperature in Heat Transfer

Excess Temperature in Boiling

Go Excess Temperature in Heat Transfer = Surface Temperature-Saturation Temperature

Heat Flux in Fully Developed Boiling State for Pressure upto 0.7 Megapascal

Go Rate of Heat Transfer = 2.253*Area*((Excess Temperature)^(3.96))

Modified Heat of Vaporization Formula

Modified Heat of Vaporization = (Latent Heat of Vaporization+(Specific Heat of Water Vapor)*((Plate Surface Temperature-Saturation Temperature)/2))
λ = (h_fg+(c_pv)*((T_w-T_Sat)/2))

What is Heat Transfer?

Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, thermal convection, thermal radiation, and transfer of energy by phase changes.

Define Thermal Conductivity & Factors affecting it?

Thermal conductivity is defined as the ability of a substance to conduct heat. Factors Affecting The Thermal Conductivity are: Moisture, Density of material, Pressure, Temperature & Structure of material.

How to Calculate Modified Heat of Vaporization?

Modified Heat of Vaporization calculator uses Modified Heat of Vaporization = (Latent Heat of Vaporization+(Specific Heat of Water Vapor)*((Plate Surface Temperature-Saturation Temperature)/2)) to calculate the Modified Heat of Vaporization, The Modified Heat of Vaporization formula is defined as the function of latent heat of vapourization, specific heat of water vapor, plate surface temperature and saturated temperature. Modified Heat of Vaporization is denoted by λ symbol.

How to calculate Modified Heat of Vaporization using this online calculator? To use this online calculator for Modified Heat of Vaporization, enter Latent Heat of Vaporization (h_fg), Specific Heat of Water Vapor (c_pv), Plate Surface Temperature (T_w) & Saturation Temperature (T_Sat) and hit the calculate button. Here is how the Modified Heat of Vaporization calculation can be explained with given input values -> 2636 = (2260+(23.5)*((405-373)/2)).

FAQ

What is Modified Heat of Vaporization?

The Modified Heat of Vaporization formula is defined as the function of latent heat of vapourization, specific heat of water vapor, plate surface temperature and saturated temperature and is represented as λ = (h_fg+(c_pv)*((T_w-T_Sat)/2)) or Modified Heat of Vaporization = (Latent Heat of Vaporization+(Specific Heat of Water Vapor)*((Plate Surface Temperature-Saturation Temperature)/2)). Latent Heat of Vaporization is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure, Specific heat of Water Vapor is the heat required to raise the temperature of water vapor by one degree to that required to raise the temperature of an equal mass of water one degree, Plate Surface Temperature is the temperature at the surface of the plate & Saturation temperature is the temperature at which a given liquid and its vapour or a given solid and its vapour can co-exist in equilibrium, at a given pressure.

How to calculate Modified Heat of Vaporization?

The Modified Heat of Vaporization formula is defined as the function of latent heat of vapourization, specific heat of water vapor, plate surface temperature and saturated temperature is calculated using Modified Heat of Vaporization = (Latent Heat of Vaporization+(Specific Heat of Water Vapor)*((Plate Surface Temperature-Saturation Temperature)/2)). To calculate Modified Heat of Vaporization, you need Latent Heat of Vaporization (h_fg), Specific Heat of Water Vapor (c_pv), Plate Surface Temperature (T_w) & Saturation Temperature (T_Sat). With our tool, you need to enter the respective value for Latent Heat of Vaporization, Specific Heat of Water Vapor, Plate Surface Temperature & Saturation Temperature 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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