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Liquid layer temperature in dehumidification Calculator

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✖Inside Temperature is the temperature of air present inside.ⓘ Inside Temperature [t_i]			+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 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%
✖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 Phase Heat Transfer Coefficient is the heat transfer in liquid per unit area in kelvin.ⓘ Liquid Phase Heat Transfer Coefficient [h1]			+10% -10%

✖Liquid layer temperature is defined as the temperature of the flowing liquid layer in dehumidification.ⓘ Liquid layer temperature in dehumidification [Tl]

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Formula

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Liquid layer temperature in dehumidification

Formula

Tl = t i - (\frac{(hg \cdot (Tg - t i)) + hfg \cdot k y \cdot (Yg - Yi)}{h1})

Example

27315.04 = 353 K - (\frac{(40 W/m²*K \cdot (100 - 353 K)) + 90 J/kg*K \cdot 90 mol/s*m² \cdot (16 - 50.7)}{10.8 W/m²*K})

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Liquid layer temperature in dehumidification Solution

STEP 0: Pre-Calculation Summary

Formula Used

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)
Tl = t_i-(((hg*(Tg-t_i))+hfg*k_y*(Yg-Yi))/h1)
This formula uses 9 Variables

Variables Used

Liquid layer temperature - Liquid layer temperature is defined as the temperature of the flowing liquid layer in dehumidification.
Inside Temperature - (Measured in Kelvin) - Inside Temperature is the temperature of air present inside.
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.
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 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.

STEP 1: Convert Input(s) to Base Unit

Inside Temperature: 353 Kelvin --> 353 Kelvin No Conversion Required
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
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 Phase Heat Transfer Coefficient: 10.8 Watt per Square Meter per Kelvin --> 10.8 Watt per Square Meter per Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Tl = t_i-(((hg*(Tg-t_i))+hfg*k_y*(Yg-Yi))/h1) --> 353-(((40*(100-353))+90*90*(16-50.7))/10.8)

Evaluating ... ...

Tl = 27315.037037037

STEP 3: Convert Result to Output's Unit

27315.037037037 --> No Conversion Required

FINAL ANSWER

27315.037037037 ≈ 27315.04 <-- Liquid layer temperature

(Calculation completed in 00.020 seconds)

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Home » Physics » Heat and Mass Transfer » Mechanical » Humidification » Liquid layer temperature in dehumidification

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Created by Nishan Poojary

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

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

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< Humidification Calculators

Gas phase heat transfer coefficient in dehumidification

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

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

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

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

Liquid layer temperature in dehumidification Formula

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 layer temperature in dehumidification?

Liquid layer temperature in dehumidification calculator uses 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) to calculate the Liquid layer temperature, The Liquid layer temperature in dehumidification formula is defined as the temperature of the flowing liquid layer in dehumidification. Liquid layer temperature is denoted by Tl symbol.

How to calculate Liquid layer temperature in dehumidification using this online calculator? To use this online calculator for Liquid layer temperature in dehumidification, enter Inside Temperature (t_i), Gas Phase Heat Transfer Coefficient (hg), Bulk Gas Temperature (Tg), Enthalpy of Evaporation (hfg), Gas Phase Mass Transfer Coefficient (k_y), Absolute Humidity of Air(tg) (Yg), Absolute Humidity (ti) (Yi) & Liquid Phase Heat Transfer Coefficient (h1) and hit the calculate button. Here is how the Liquid layer temperature in dehumidification calculation can be explained with given input values -> 24423.37 = 353-(((40*(100-353))+90*90*(16-50.7))/10.8).

FAQ

What is Liquid layer temperature in dehumidification?

The Liquid layer temperature in dehumidification formula is defined as the temperature of the flowing liquid layer in dehumidification and is represented as Tl = t_i-(((hg*(Tg-t_i))+hfg*k_y*(Yg-Yi))/h1) or 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). Inside Temperature is the temperature of air present inside, 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, 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 Phase Heat Transfer Coefficient is the heat transfer in liquid per unit area in kelvin.

How to calculate Liquid layer temperature in dehumidification?

The Liquid layer temperature in dehumidification formula is defined as the temperature of the flowing liquid layer in dehumidification is calculated using 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). To calculate Liquid layer temperature in dehumidification, you need Inside Temperature (t_i), Gas Phase Heat Transfer Coefficient (hg), Bulk Gas Temperature (Tg), Enthalpy of Evaporation (hfg), Gas Phase Mass Transfer Coefficient (k_y), Absolute Humidity of Air(tg) (Yg), Absolute Humidity (ti) (Yi) & Liquid Phase Heat Transfer Coefficient (h1). With our tool, you need to enter the respective value for Inside Temperature, Gas Phase Heat Transfer Coefficient, Bulk Gas Temperature, Enthalpy of Evaporation, Gas Phase Mass Transfer Coefficient, Absolute Humidity of Air(tg), Absolute Humidity (ti) & Liquid Phase Heat Transfer Coefficient 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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