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Wet bulb temperature of humidification Formula

GoWet bulb temperature given gas constant of water vapor Formula

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Wet Bulb Temperature is the temperature of the wet bulb and denoted by the symbol Tw. Check FAQs

T w = T∞ - (\frac{0.622 \cdot hfg}{cp \cdot ({L e}^{0.67})}) \cdot ((\frac{Pw}{P T}) - (\frac{P∞}{P T}))

T_w - Wet Bulb Temperature?T∞ - Air Temperature?hfg - Enthalpy of Evaporation?cp - Specific Heat of Air?L_e - Lewis Number?Pw - Partial Pressure?P_T - Total Pressure?P∞ - Partial Pressure in air?

Wet bulb temperature of humidification Example

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Here is how the Wet bulb temperature of humidification equation looks like with Values.

Here is how the Wet bulb temperature of humidification equation looks like with Units.

Here is how the Wet bulb temperature of humidification equation looks like.

34.9993 = 35 - (\frac{0.622 \cdot 90}{3 \cdot ({4.5}^{0.67})}) \cdot ((\frac{13}{120000}) - (\frac{0.016}{120000}))

34.9993 = 35 - (\frac{0.622 \cdot 90J/kg*K}{3J/(kg*K) \cdot ({4.5}^{0.67})}) \cdot ((\frac{13}{120000Pa}) - (\frac{0.016}{120000Pa}))

34.9993 = 35 - (\frac{0.622 \cdot 90}{3 \cdot ({4.5}^{0.67})}) \cdot ((\frac{13}{120000}) - (\frac{0.016}{120000}))

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Wet bulb temperature of humidification Solution

Follow our step by step solution on how to calculate Wet bulb temperature of humidification?

FIRST Step Consider the formula

T w = T∞ - (\frac{0.622 \cdot hfg}{cp \cdot ({L e}^{0.67})}) \cdot ((\frac{Pw}{P T}) - (\frac{P∞}{P T}))

Next Step Substitute values of Variables

∴

T w = 35 - (\frac{0.622 \cdot 90J/kg*K}{3J/(kg*K) \cdot ({4.5}^{0.67})}) \cdot ((\frac{13}{120000Pa}) - (\frac{0.016}{120000Pa}))

Next Step Prepare to Evaluate

∴

T w = 35 - (\frac{0.622 \cdot 90}{3 \cdot ({4.5}^{0.67})}) \cdot ((\frac{13}{120000}) - (\frac{0.016}{120000}))

Next Step Evaluate

∴

T w = 34.9992629677085

LAST Step Rounding Answer

∴

T w = 34.9993

Wet bulb temperature of humidification Formula Elements

Variables

Wet Bulb Temperature

Wet Bulb Temperature is the temperature of the wet bulb and denoted by the symbol Tw.

Symbol: T_w

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Wet Bulb Temperature

Air Temperature

Air temperature is the temperature of the air surrounding an individual and is typically measured in degrees Celsius (°C) or in Kelvin.

Symbol: T∞

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Air Temperature

Enthalpy of Evaporation

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.

Symbol: hfg

Measurement: Specific EntropyUnit: J/kg*K

Note: Value can be positive or negative.

Formulas to find Enthalpy of Evaporation

Specific Heat of Air

Specific heat of air is the heat required to raise the temperature of a air by one degree to that required to raise the temperature of an equal mass of water one degree.

Symbol: cp

Measurement: Specific Heat CapacityUnit: J/(kg*K)

Note: Value can be positive or negative.

Formulas to find Specific Heat of Air

Lewis Number

The Lewis Number is a dimensionless number defined as the ratio of thermal diffusivity to mass diffusivity.

Symbol: L_e

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Lewis Number

Partial Pressure

Partial pressure of the water vapor at wet bulb temperature.

Symbol: Pw

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Partial Pressure

Total Pressure

Total Pressure is the sum of all the forces that the gas molecules exert on the walls of their container.

Symbol: P_T

Measurement: PressureUnit: Pa

Note: Value can be positive or negative.

Formulas to find Total Pressure

Partial Pressure in air

Partial pressure in air of the water vapor is the pressure of water in the mixture of water and air.

Symbol: P∞

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Partial Pressure in air

Other Formulas to find Wet Bulb Temperature

Go Wet bulb temperature given gas constant of water vapor

T w = T∞ - (\frac{hfg \cdot (Pw - P∞)}{Rw \cdot ρ \cdot cp \cdot Tf \cdot ({L e}^{0.67})})

Other formulas in Humidification category

Go Enthalpy of evaporation for water in humidification

hfg = \frac{h Conv \cdot (T∞ - T w)}{k L \cdot (Pw - P∞)}

Go Convective mass transfer coefficient in humidification

k L = \frac{h Conv \cdot (T∞ - T w)}{hfg \cdot (Pw - P∞)}

How to Evaluate Wet bulb temperature of humidification?

Wet bulb temperature of humidification evaluator uses Wet Bulb Temperature = Air Temperature-((0.622*Enthalpy of Evaporation)/(Specific Heat of Air*(Lewis Number^0.67)))*((Partial Pressure/Total Pressure)-(Partial Pressure in air/Total Pressure)) to evaluate the Wet Bulb Temperature, The Wet bulb temperature of humidification formula is defined as the temperature of the parcel of air cooled for saturation. Wet Bulb Temperature is denoted by T_w symbol.

How to evaluate Wet bulb temperature of humidification using this online evaluator? To use this online evaluator for Wet bulb temperature of humidification, enter Air Temperature (T∞), Enthalpy of Evaporation (hfg), Specific Heat of Air (cp), Lewis Number (L_e), Partial Pressure (Pw), Total Pressure (P_T) & Partial Pressure in air (P∞) and hit the calculate button.

FAQs on Wet bulb temperature of humidification

What is the formula to find Wet bulb temperature of humidification?

The formula of Wet bulb temperature of humidification is expressed as Wet Bulb Temperature = Air Temperature-((0.622*Enthalpy of Evaporation)/(Specific Heat of Air*(Lewis Number^0.67)))*((Partial Pressure/Total Pressure)-(Partial Pressure in air/Total Pressure)). Here is an example- 34.15768 = 35-((0.622*90)/(3*(4.5^0.67)))*((13/120000)-(0.016/120000)).

How to calculate Wet bulb temperature of humidification?

With Air Temperature (T∞), Enthalpy of Evaporation (hfg), Specific Heat of Air (cp), Lewis Number (L_e), Partial Pressure (Pw), Total Pressure (P_T) & Partial Pressure in air (P∞) we can find Wet bulb temperature of humidification using the formula - Wet Bulb Temperature = Air Temperature-((0.622*Enthalpy of Evaporation)/(Specific Heat of Air*(Lewis Number^0.67)))*((Partial Pressure/Total Pressure)-(Partial Pressure in air/Total Pressure)).

What are the other ways to Calculate Wet Bulb Temperature?

Here are the different ways to Calculate Wet Bulb Temperature-

Wet Bulb Temperature=Air Temperature-((Enthalpy of Evaporation*(Partial Pressure-Partial Pressure in air))/(Gas constant*Density*Specific Heat of Air*Mean Temperature*(Lewis Number^0.67)))

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Wet bulb temperature of humidification Formula

​GoWet bulb temperature given gas constant of water vapor Formula

Wet bulb temperature of humidification Example

Wet bulb temperature of humidification Solution

Wet bulb temperature of humidification Formula Elements

Other Formulas to find Wet Bulb Temperature

Other formulas in Humidification category

How to Evaluate Wet bulb temperature of humidification?

FAQs on Wet bulb temperature of humidification

Variable Name

GoWet bulb temperature given gas constant of water vapor Formula