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Latent Heat of Air based on Wet Bulb Temperature Formula

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The heat of vaporization at wet bulb temperature is the energy required per unit mass to convert liquid water into vapor at the wet bulb temperature of the gas liquid mixture. Check FAQs

λ W = (\frac{T G - T W}{Y W' - Y A}) \cdot (\frac{h G}{k Y'})

λ_W - Heat of Vaporization at Wet Bulb Temperature?T_G - Temperature of Air?T_W - Wet Bulb Temperature?Y_W' - Air Humidity at Wet Bulb Temperature?Y_A - Ambient Air Humidity?h_G - Heat Transfer Coefficient of the Air Film?k_Y' - Mass Transfer Coefficient of the Moisture?

Latent Heat of Air based on Wet Bulb Temperature Example

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Here is how the Latent Heat of Air based on Wet Bulb Temperature equation looks like with Values.

Here is how the Latent Heat of Air based on Wet Bulb Temperature equation looks like with Units.

Here is how the Latent Heat of Air based on Wet Bulb Temperature equation looks like.

2397.6 = (\frac{30 - 21}{0.021 - 0.016}) \cdot (\frac{13.32}{0.01})

2397.6kJ/kg = (\frac{30°C - 21°C}{0.021kg/kg of air - 0.016kg/kg of air}) \cdot (\frac{13.32W/m²*K}{0.01mol/s*m²})

2397.6 = (\frac{30 - 21}{0.021 - 0.016}) \cdot (\frac{13.32}{0.01})

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Latent Heat of Air based on Wet Bulb Temperature Solution

Follow our step by step solution on how to calculate Latent Heat of Air based on Wet Bulb Temperature?

FIRST Step Consider the formula

λ W = (\frac{T G - T W}{Y W' - Y A}) \cdot (\frac{h G}{k Y'})

Next Step Substitute values of Variables

∴

λ W = (\frac{30°C - 21°C}{0.021kg/kg of air - 0.016kg/kg of air}) \cdot (\frac{13.32W/m²*K}{0.01mol/s*m²})

Next Step Convert Units

∴

λ W = (\frac{303.15K - 294.15K}{0.021kg/kg of air - 0.016kg/kg of air}) \cdot (\frac{13.32W/m²*K}{0.01mol/s*m²})

Next Step Prepare to Evaluate

∴

λ W = (\frac{303.15 - 294.15}{0.021 - 0.016}) \cdot (\frac{13.32}{0.01})

Next Step Evaluate

∴

λ W = 2397600J/kg

LAST Step Convert to Output's Unit

∴

λ W = 2397.6kJ/kg

Latent Heat of Air based on Wet Bulb Temperature Formula Elements

Variables

Heat of Vaporization at Wet Bulb Temperature

The heat of vaporization at wet bulb temperature is the energy required per unit mass to convert liquid water into vapor at the wet bulb temperature of the gas liquid mixture.

Symbol: λ_W

Measurement: Latent HeatUnit: kJ/kg

Note: Value should be greater than 0.

Formulas to find Heat of Vaporization at Wet Bulb Temperature

Temperature of Air

The Temperature of Air is defined as the temperature at which the air-water mixture properties in humidification are calculated.

Symbol: T_G

Measurement: TemperatureUnit: °C

Note: Value should be greater than -273.15.

Formulas to find Temperature of Air

Wet Bulb Temperature

Wet bulb temperature is the lowest temperature attainable by evaporating water into air at constant pressure.

Symbol: T_W

Measurement: TemperatureUnit: °C

Note: Value should be greater than -273.15.

Formulas to find Wet Bulb Temperature

Air Humidity at Wet Bulb Temperature

Air humidity at Wet Bulb Temperature refers to the moisture content present in the surrounding air at a given location at the Wet Bulb temperature.

Symbol: Y_W'

Measurement: Specific HumidityUnit: kg/kg of air

Note: Value should be greater than 0.

Formulas to find Air Humidity at Wet Bulb Temperature

Ambient Air Humidity

Ambient air humidity refers to the moisture content present in the surrounding air at a given location an temperature.

Symbol: Y_A

Measurement: Specific HumidityUnit: kg/kg of air

Note: Value should be greater than 0.

Formulas to find Ambient Air Humidity

Heat Transfer Coefficient of the Air Film

Heat Transfer Coefficient of the Air Film is the proportionality factor between the heat transfer rate and the temperature driving force.

Symbol: h_G

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value should be greater than 0.

Formulas to find Heat Transfer Coefficient of the Air Film

Mass Transfer Coefficient of the Moisture

Mass Transfer Coefficient of the Moisture is the proportionality factor between the mass transfer rate and the concentration driving force.

Symbol: k_Y'

Measurement: Molar Flux of Diffusing ComponentUnit: mol/s*m²

Note: Value should be greater than 0.

Formulas to find Mass Transfer Coefficient of the Moisture

Other formulas in Adiabatic Saturation Temperature and Wet Bulb Temperature category

Go Adiabatic Saturation Temperature

T S = T G - (Y S' - Y') \cdot (\frac{λ S}{C s})

Go Air Inlet Temperature based on Adiabatic Saturation Temperature

T G = (Y S' - Y') \cdot (\frac{λ S}{C s}) + T S

How to Evaluate Latent Heat of Air based on Wet Bulb Temperature?

Latent Heat of Air based on Wet Bulb Temperature evaluator uses Heat of Vaporization at Wet Bulb Temperature = ((Temperature of Air-Wet Bulb Temperature)/(Air Humidity at Wet Bulb Temperature-Ambient Air Humidity))*(Heat Transfer Coefficient of the Air Film/Mass Transfer Coefficient of the Moisture) to evaluate the Heat of Vaporization at Wet Bulb Temperature, The Latent Heat of Air based on Wet Bulb Temperature formula is defined as the Latent heat of air calculated from the wet bulb temperature (i.e. temperature decrease due to saturation of air at wet bulb) at specified air properties. Heat of Vaporization at Wet Bulb Temperature is denoted by λ_W symbol.

How to evaluate Latent Heat of Air based on Wet Bulb Temperature using this online evaluator? To use this online evaluator for Latent Heat of Air based on Wet Bulb Temperature, enter Temperature of Air (T_G), Wet Bulb Temperature (T_W), Air Humidity at Wet Bulb Temperature (Y_W'), Ambient Air Humidity (Y_A), Heat Transfer Coefficient of the Air Film (h_G) & Mass Transfer Coefficient of the Moisture (k_Y') and hit the calculate button.

FAQs on Latent Heat of Air based on Wet Bulb Temperature

What is the formula to find Latent Heat of Air based on Wet Bulb Temperature?

The formula of Latent Heat of Air based on Wet Bulb Temperature is expressed as Heat of Vaporization at Wet Bulb Temperature = ((Temperature of Air-Wet Bulb Temperature)/(Air Humidity at Wet Bulb Temperature-Ambient Air Humidity))*(Heat Transfer Coefficient of the Air Film/Mass Transfer Coefficient of the Moisture). Here is an example- 2.3976 = ((303.15-294.15)/(0.021-0.016))*(13.32/0.01).

How to calculate Latent Heat of Air based on Wet Bulb Temperature?

With Temperature of Air (T_G), Wet Bulb Temperature (T_W), Air Humidity at Wet Bulb Temperature (Y_W'), Ambient Air Humidity (Y_A), Heat Transfer Coefficient of the Air Film (h_G) & Mass Transfer Coefficient of the Moisture (k_Y') we can find Latent Heat of Air based on Wet Bulb Temperature using the formula - Heat of Vaporization at Wet Bulb Temperature = ((Temperature of Air-Wet Bulb Temperature)/(Air Humidity at Wet Bulb Temperature-Ambient Air Humidity))*(Heat Transfer Coefficient of the Air Film/Mass Transfer Coefficient of the Moisture).

Can the Latent Heat of Air based on Wet Bulb Temperature be negative?

No, the Latent Heat of Air based on Wet Bulb Temperature, measured in Latent Heat cannot be negative.

Which unit is used to measure Latent Heat of Air based on Wet Bulb Temperature?

Latent Heat of Air based on Wet Bulb Temperature is usually measured using the Kilojoule per Kilogram[kJ/kg] for Latent Heat. Joule per Kilogram[kJ/kg], BTU per Pound[kJ/kg], Calorie per Gram[kJ/kg] are the few other units in which Latent Heat of Air based on Wet Bulb Temperature can be measured.

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Latent Heat of Air based on Wet Bulb Temperature Formula

Latent Heat of Air based on Wet Bulb Temperature Example

Latent Heat of Air based on Wet Bulb Temperature Solution

Latent Heat of Air based on Wet Bulb Temperature Formula Elements

Other formulas in Adiabatic Saturation Temperature and Wet Bulb Temperature category

How to Evaluate Latent Heat of Air based on Wet Bulb Temperature?

FAQs on Latent Heat of Air based on Wet Bulb Temperature

Variable Name