Gas phase mass transfer coefficient Calculator

Category	Physics ↺
Physics	Heat and Mass Transfer ↺
Heat-And-Mass-Transfer	Humidification ↺

✖Liquid phase heat transfer coefficient is the heat transfer in liquid per unit area in kelvinⓘ Liquid phase heat transfer coefficient [h1]			+10% -10%
✖Inside Temperature is the temperature of air present inside.ⓘ Inside Temperature [ti]			+10% -10%
✖Liquid layer temperature is the temperature of the liquid layerⓘ Liquid layer temperature [Tl]			+10% -10%
✖Gas phase heat transfer coefficient is the heat transfer in gas per unit area in kelvinⓘ Gas phase heat transfer coefficient [hg]			+10% -10%
✖Bulk gas temperature is the average temperatureⓘ Bulk gas temperature [Tg]			+10% -10%
✖Enthalpy of evaporation is the amount of energy (enthalpy) that must be added to a liquid substance to transform a quantity of that substance into a gas.ⓘ Enthalpy of evaporation [hfg]			+10% -10%
✖Absolute of humidity of air at the initial air temperatureⓘ Absolute of humidity of air [Yg]			+10% -10%
✖Absolute humidity is the quality of water vapor in the wet air of unit volume at temperature tiⓘ Absolute humidity [Yi]			+10% -10%

✖Gas phase mass transfer coefficient is a diffusion rate constant that relates the mass transfer rate, mass transfer area, and concentration change as driving forceⓘ Gas phase mass transfer coefficient [hmg]

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Nishan Poojary

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

Nishan Poojary has created this Calculator and 300+ more calculators!

Rajat Vishwakarma

University Institute of Technology RGPV (UIT - RGPV), Bhopal

Rajat Vishwakarma has verified this Calculator and 50+ more calculators!

< 11 Other formulas that you can solve using the same Inputs

Temperature of air during humidification

Temperature=(((0.622*Enthalpy of evaporation)/(Specific heat of air*(Lewis Number^0.67)))*((Partial pressure /Total pressure)-(Partial pressure /Total pressure)))+Wet bulb temperature GO

Specific heat of air given gas constant

Specific heat of air=(((Enthalpy of evaporation*(Partial pressure -Partial pressure ))/(Gas constant*Density*(Temperature-Wet bulb temperature)*Mean temperature*(Lewis Number^0.67)))) GO

Temperature of air given gas constant of water

Temperature=(((Enthalpy of evaporation*(Partial pressure -Partial pressure ))/(Gas constant*Density*Specific heat of air*Mean temperature*(Lewis Number^0.67))))+Wet bulb temperature GO

Wet bulb temperature of humidification

Wet bulb temperature=Temperature-((0.622*Enthalpy of evaporation)/(Specific heat of air*(Lewis Number^0.67)))*((Partial pressure /Total pressure)-(Partial pressure /Total pressure)) GO

Wet bulb temperature given gas constant of water vapor

Wet bulb temperature=Temperature-((Enthalpy of evaporation*(Partial pressure -Partial pressure ))/(Gas constant*Density*Specific heat of air*Mean temperature*(Lewis Number^0.67))) GO

Partial pressure of water vapor at wet bulb temperature

Partial pressure =((Convective heat transfer coefficient*(Temperature-Wet bulb temperature))/(Enthalpy of evaporation*Convective mass transfer coefficient))+Partial pressure GO

Partial pressure of water vapor in air

Partial pressure =Partial pressure -((Convective heat transfer coefficient*(Temperature-Wet bulb temperature))/(Enthalpy of evaporation*Convective mass transfer coefficient)) GO

Specific heat of air during humidification

Specific heat of air=(Absolute humidity of air-Absolute humidity of air)*Enthalpy of evaporation/((Temperature-Temperature)*Lewis Number^0.67) GO

Heat Transfer Through Plane Wall or Surface

Heat Rate=-Thermal Conductivity*Original cross sectional area*(Outside Temperature-Inside Temperature)/Width GO

Sensible Heat

Sensible Heat=1.10*Rate of Flow of air entering inside*(Outside Temperature-Inside Temperature) GO

Heat Transfer in a Heat Exchanger using overall heat transfer coefficient

Heat=Overall Heat Transfer Coefficient*Area*(Outside Temperature-Inside Temperature) GO

< 1 Other formulas that calculate the same Output

Gas phase mass transfer coefficient

Gas phase mass transfer coefficient=(Mass velocity of air/Height)*ln((Absolute of humidity of air-Humidity of air at entry )/(Absolute of humidity of air-Humidity of air at exit )) GO

Gas phase mass transfer coefficient Formula

Gas phase mass transfer coefficient=((Liquid phase heat transfer coefficient*(Inside Temperature-Liquid layer temperature))-Gas phase heat transfer coefficient*(Bulk gas temperature-Inside Temperature))/(Enthalpy of evaporation*(Absolute of humidity of air-Absolute humidity))
hmg=((h1*(ti-Tl))-hg*(Tg-ti))/(hfg*(Yg-Yi))

More formulas

Partial pressure of water vapor at wet bulb temperature GO

Partial pressure of water vapor in air GO

Temperature of air given gas constant of water GO

Wet bulb temperature given gas constant of water vapor GO

Temperature of air during humidification GO

Wet bulb temperature of humidification GO

Specific heat of air during humidification GO

Specific heat of air given gas constant GO

Gas constant of water vapor GO

Enthalpy of evaporation of water in humidification GO

Absolute humidity of air at the final equilibrium air temperature GO

Height of tower in abiotic humidification GO

Gas phase mass transfer coefficient GO

Mass velocity of air per unit area GO

Liquid phase heat transfer coefficient in dehumidification GO

Liquid layer temperature in dehumidification GO

Gas phase heat transfer coefficient in dehumidification GO

Bulk gas temperature in dehumidification GO

Enthalpy of evaporation in dehumidification GO

Absolute humidity at inside temperature in dehumidification GO

Heat transfer coefficient in humidification GO

Enthalpy of evaporation for water in humidification GO

Convective mass transfer coefficient in humidification GO

What is humidification?

Humidification is the process in which the moisture or water vapor or humidity is added to the air. Common equipment used in this process is a humidifier. Dehumidification as the term suggests, is the opposite of humidification since dehumidification means removing the moisture from the air. Common equipment used in this process is a dehumidifier. Humidity is the presence of water vapor or moisture in the air, while relative humidity, on the other hand, is the comparison of the actual moisture or water vapor in the air vs. the total water vapor or moisture that the air can handle.

How to Calculate Gas phase mass transfer coefficient?

Gas phase mass transfer coefficient calculator uses Gas phase mass transfer coefficient=((Liquid phase heat transfer coefficient*(Inside Temperature-Liquid layer temperature))-Gas phase heat transfer coefficient*(Bulk gas temperature-Inside Temperature))/(Enthalpy of evaporation*(Absolute of humidity of air-Absolute humidity)) to calculate the Gas phase mass transfer coefficient, The Gas phase mass transfer coefficient formula is defined as a diffusion rate constant that relates the mass transfer rate, mass transfer area, and concentration change as driving force. Gas phase mass transfer coefficient and is denoted by hmg symbol.

How to calculate Gas phase mass transfer coefficient using this online calculator? To use this online calculator for Gas phase mass transfer coefficient, enter Liquid phase heat transfer coefficient (h1), Inside Temperature (ti), Liquid layer temperature (Tl), Gas phase heat transfer coefficient (hg), Bulk gas temperature (Tg), Enthalpy of evaporation (hfg), Absolute of humidity of air (Yg) and Absolute humidity (Yi) and hit the calculate button. Here is how the Gas phase mass transfer coefficient calculation can be explained with given input values -> 9.370E-6 = ((10*((-0.214034551291851)-(-0.0734888848061731)))-30*((-0.0734888848061731)-(-0.214034551291851)))/(20000*(20-50)).

FAQ

What is Gas phase mass transfer coefficient?

The Gas phase mass transfer coefficient formula is defined as a diffusion rate constant that relates the mass transfer rate, mass transfer area, and concentration change as driving force and is represented as hmg=((h1*(ti-Tl))-hg*(Tg-ti))/(hfg*(Yg-Yi)) or Gas phase mass transfer coefficient=((Liquid phase heat transfer coefficient*(Inside Temperature-Liquid layer temperature))-Gas phase heat transfer coefficient*(Bulk gas temperature-Inside Temperature))/(Enthalpy of evaporation*(Absolute of humidity of air-Absolute humidity)). Liquid phase heat transfer coefficient is the heat transfer in liquid per unit area in kelvin, Inside Temperature is the temperature of air present inside, Liquid layer temperature is the temperature of the liquid layer, Gas phase heat transfer coefficient is the heat transfer in gas per unit area in kelvin, Bulk gas temperature is the average temperature, Enthalpy of evaporation is the amount of energy (enthalpy) that must be added to a liquid substance to transform a quantity of that substance into a gas, Absolute of humidity of air at the initial air temperature and Absolute humidity is the quality of water vapor in the wet air of unit volume at temperature ti.

How to calculate Gas phase mass transfer coefficient?

The Gas phase mass transfer coefficient formula is defined as a diffusion rate constant that relates the mass transfer rate, mass transfer area, and concentration change as driving force is calculated using Gas phase mass transfer coefficient=((Liquid phase heat transfer coefficient*(Inside Temperature-Liquid layer temperature))-Gas phase heat transfer coefficient*(Bulk gas temperature-Inside Temperature))/(Enthalpy of evaporation*(Absolute of humidity of air-Absolute humidity)). To calculate Gas phase mass transfer coefficient, you need Liquid phase heat transfer coefficient (h1), Inside Temperature (ti), Liquid layer temperature (Tl), Gas phase heat transfer coefficient (hg), Bulk gas temperature (Tg), Enthalpy of evaporation (hfg), Absolute of humidity of air (Yg) and Absolute humidity (Yi). With our tool, you need to enter the respective value for Liquid phase heat transfer coefficient, Inside Temperature, Liquid layer temperature, Gas phase heat transfer coefficient, Bulk gas temperature, Enthalpy of evaporation, Absolute of humidity of air and Absolute humidity 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 Gas phase mass transfer coefficient?

In this formula, Gas phase mass transfer coefficient uses Liquid phase heat transfer coefficient, Inside Temperature, Liquid layer temperature, Gas phase heat transfer coefficient, Bulk gas temperature, Enthalpy of evaporation, Absolute of humidity of air and Absolute humidity. We can use 1 other way(s) to calculate the same, which is/are as follows -

Gas phase mass transfer coefficient=(Mass velocity of air/Height)*ln((Absolute of humidity of air-Humidity of air at entry )/(Absolute of humidity of air-Humidity of air at exit ))

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