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Liquid phase heat transfer coefficient in dehumidification Calculator

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✖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 adiabatic mixing of the gas from a given cross section of duct will result in some equilibrium temperature that accurately reflects average temperature of the moving fluid.ⓘ Bulk Gas Temperature [Tg]			+10% -10%
✖Temperature at inner surface is the temperature value at the inner surface of the wall.ⓘ Temperature at inner surface [Ti]			+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%
✖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 [k_y]			+10% -10%
✖Absolute Humidity of Air(tg) at the initial air temperature.ⓘ Absolute Humidity of Air(tg) [Yg]			+10% -10%
✖Absolute humidity (ti) is the quality of water vapor in the wet air of unit volume at temperature ti.ⓘ Absolute Humidity (ti) [Yi]			+10% -10%
✖Liquid layer temperature is defined as the temperature of the flowing liquid layer in dehumidification.ⓘ Liquid layer temperature [Tl]			+10% -10%

✖Liquid Phase Heat Transfer Coefficient is the heat transfer in liquid per unit area in kelvin.ⓘ Liquid phase heat transfer coefficient in dehumidification [h1]

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Liquid phase heat transfer coefficient in dehumidification Solution

STEP 0: Pre-Calculation Summary

Formula Used

Liquid Phase Heat Transfer Coefficient = ((Gas Phase Heat Transfer Coefficient*(Bulk Gas Temperature-Temperature at inner surface))+Enthalpy of Evaporation*Gas Phase Mass Transfer Coefficient*(Absolute Humidity of Air(tg)-Absolute Humidity (ti)))/(Temperature at inner surface-Liquid layer temperature)
h1 = ((hg*(Tg-Ti))+hfg*k_y*(Yg-Yi))/(Ti-Tl)
This formula uses 9 Variables

Variables Used

Liquid Phase Heat Transfer Coefficient - (Measured in Watt per Square Meter per Kelvin) - Liquid Phase Heat Transfer Coefficient is the heat transfer in liquid per unit area in kelvin.
Gas Phase Heat Transfer Coefficient - (Measured in Watt per Square Meter per Kelvin) - Gas Phase Heat Transfer Coefficient is the heat transfer in gas per unit area in kelvin.
Bulk Gas Temperature - Bulk gas temperature is adiabatic mixing of the gas from a given cross section of duct will result in some equilibrium temperature that accurately reflects average temperature of the moving fluid.
Temperature at inner surface - Temperature at inner surface is the temperature value at the inner surface of the wall.
Enthalpy of Evaporation - (Measured in Joule per Kilogram K) - 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.
Gas Phase Mass Transfer Coefficient - (Measured in Mole per Second Square Meter) - 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.
Absolute Humidity of Air(tg) - Absolute Humidity of Air(tg) at the initial air temperature.
Absolute Humidity (ti) - Absolute humidity (ti) is the quality of water vapor in the wet air of unit volume at temperature ti.
Liquid layer temperature - Liquid layer temperature is defined as the temperature of the flowing liquid layer in dehumidification.

STEP 1: Convert Input(s) to Base Unit

Gas Phase Heat Transfer Coefficient: 40 Watt per Square Meter per Kelvin --> 40 Watt per Square Meter per Kelvin No Conversion Required
Bulk Gas Temperature: 100 --> No Conversion Required
Temperature at inner surface: 30 --> No Conversion Required
Enthalpy of Evaporation: 90 Joule per Kilogram K --> 90 Joule per Kilogram K No Conversion Required
Gas Phase Mass Transfer Coefficient: 90 Mole per Second Square Meter --> 90 Mole per Second Square Meter No Conversion Required
Absolute Humidity of Air(tg): 16 --> No Conversion Required
Absolute Humidity (ti): 50.7 --> No Conversion Required
Liquid layer temperature: 20 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

h1 = ((hg*(Tg-Ti))+hfg*k_y*(Yg-Yi))/(Ti-Tl) --> ((40*(100-30))+90*90*(16-50.7))/(30-20)

Evaluating ... ...

h1 = -27827

STEP 3: Convert Result to Output's Unit

-27827 Watt per Square Meter per Kelvin --> No Conversion Required

FINAL ANSWER

-27827 Watt per Square Meter per Kelvin <-- Liquid Phase Heat Transfer Coefficient

(Calculation completed in 00.020 seconds)

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Created by Nishan Poojary

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

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< Humidification Calculators

Gas phase heat transfer coefficient in dehumidification

LaTeX Go Gas Phase Heat Transfer Coefficient = ((Liquid Phase Heat Transfer Coefficient*(Inside Temperature-Liquid layer temperature))-(Enthalpy of Evaporation*Gas Phase Mass Transfer Coefficient*(Absolute Humidity of Air(tg)-Absolute Humidity (ti))))/(Bulk Gas Temperature-Inside Temperature)

Liquid layer temperature in dehumidification

LaTeX Go Liquid layer temperature = Inside Temperature-(((Gas Phase Heat Transfer Coefficient*(Bulk Gas Temperature-Inside Temperature))+Enthalpy of Evaporation*Gas Phase Mass Transfer Coefficient*(Absolute Humidity of Air(tg)-Absolute Humidity (ti)))/Liquid Phase Heat Transfer Coefficient)

Convective mass transfer coefficient in humidification

LaTeX Go Convective Mass Transfer Coefficient = (Convective Heat Transfer Coefficient*(Air Temperature-Wet Bulb Temperature))/(Enthalpy of Evaporation*(Partial Pressure-Partial Pressure in air))

Enthalpy of evaporation for water in humidification

LaTeX Go Enthalpy of Evaporation = (Convective Heat Transfer Coefficient*(Air Temperature-Wet Bulb Temperature))/(Convective Mass Transfer Coefficient*(Partial Pressure-Partial Pressure in air))

Liquid phase heat transfer coefficient in dehumidification Formula

LaTeX 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 Liquid phase heat transfer coefficient in dehumidification?

Liquid phase heat transfer coefficient in dehumidification calculator uses Liquid Phase Heat Transfer Coefficient = ((Gas Phase Heat Transfer Coefficient*(Bulk Gas Temperature-Temperature at inner surface))+Enthalpy of Evaporation*Gas Phase Mass Transfer Coefficient*(Absolute Humidity of Air(tg)-Absolute Humidity (ti)))/(Temperature at inner surface-Liquid layer temperature) to calculate the Liquid Phase Heat Transfer Coefficient, The Liquid phase heat transfer coefficient in dehumidification formula is defined as the convective heat transfer relation between liquid medium and surface on which the liquid is flowing. Liquid Phase Heat Transfer Coefficient is denoted by h1 symbol.

How to calculate Liquid phase heat transfer coefficient in dehumidification using this online calculator? To use this online calculator for Liquid phase heat transfer coefficient in dehumidification, enter Gas Phase Heat Transfer Coefficient (hg), Bulk Gas Temperature (Tg), Temperature at inner surface (Ti), Enthalpy of Evaporation (hfg), Gas Phase Mass Transfer Coefficient (k_y), Absolute Humidity of Air(tg) (Yg), Absolute Humidity (ti) (Yi) & Liquid layer temperature (Tl) and hit the calculate button. Here is how the Liquid phase heat transfer coefficient in dehumidification calculation can be explained with given input values -> -24704 = ((40*(100-30))+90*90*(16-50.7))/(30-20).

FAQ

What is Liquid phase heat transfer coefficient in dehumidification?

The Liquid phase heat transfer coefficient in dehumidification formula is defined as the convective heat transfer relation between liquid medium and surface on which the liquid is flowing and is represented as h1 = ((hg*(Tg-Ti))+hfg*k_y*(Yg-Yi))/(Ti-Tl) or Liquid Phase Heat Transfer Coefficient = ((Gas Phase Heat Transfer Coefficient*(Bulk Gas Temperature-Temperature at inner surface))+Enthalpy of Evaporation*Gas Phase Mass Transfer Coefficient*(Absolute Humidity of Air(tg)-Absolute Humidity (ti)))/(Temperature at inner surface-Liquid layer temperature). Gas Phase Heat Transfer Coefficient is the heat transfer in gas per unit area in kelvin, Bulk gas temperature is adiabatic mixing of the gas from a given cross section of duct will result in some equilibrium temperature that accurately reflects average temperature of the moving fluid, Temperature at inner surface is the temperature value at the inner surface of the wall, 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, 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, Absolute Humidity of Air(tg) at the initial air temperature, Absolute humidity (ti) is the quality of water vapor in the wet air of unit volume at temperature ti & Liquid layer temperature is defined as the temperature of the flowing liquid layer in dehumidification.

How to calculate Liquid phase heat transfer coefficient in dehumidification?

The Liquid phase heat transfer coefficient in dehumidification formula is defined as the convective heat transfer relation between liquid medium and surface on which the liquid is flowing is calculated using Liquid Phase Heat Transfer Coefficient = ((Gas Phase Heat Transfer Coefficient*(Bulk Gas Temperature-Temperature at inner surface))+Enthalpy of Evaporation*Gas Phase Mass Transfer Coefficient*(Absolute Humidity of Air(tg)-Absolute Humidity (ti)))/(Temperature at inner surface-Liquid layer temperature). To calculate Liquid phase heat transfer coefficient in dehumidification, you need Gas Phase Heat Transfer Coefficient (hg), Bulk Gas Temperature (Tg), Temperature at inner surface (Ti), Enthalpy of Evaporation (hfg), Gas Phase Mass Transfer Coefficient (k_y), Absolute Humidity of Air(tg) (Yg), Absolute Humidity (ti) (Yi) & Liquid layer temperature (Tl). With our tool, you need to enter the respective value for Gas Phase Heat Transfer Coefficient, Bulk Gas Temperature, Temperature at inner surface, Enthalpy of Evaporation, Gas Phase Mass Transfer Coefficient, Absolute Humidity of Air(tg), Absolute Humidity (ti) & Liquid layer 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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