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Heat Transfer Coefficient based on Wet Bulb Temperature Formula

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

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

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

Heat Transfer Coefficient based on Wet Bulb Temperature Example

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Here is how the Heat Transfer Coefficient based on Wet Bulb Temperature equation looks like with Values.

Here is how the Heat Transfer Coefficient based on Wet Bulb Temperature equation looks like with Units.

Here is how the Heat Transfer Coefficient based on Wet Bulb Temperature equation looks like.

12.5 = 0.01 \cdot 2250 \cdot (\frac{0.021 - 0.016}{30 - 21})

12.5W/m²*K = 0.01mol/s*m² \cdot 2250kJ/kg \cdot (\frac{0.021kg/kg of air - 0.016kg/kg of air}{30°C - 21°C})

12.5 = 0.01 \cdot 2250 \cdot (\frac{0.021 - 0.016}{30 - 21})

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Heat Transfer Coefficient based on Wet Bulb Temperature Solution

Follow our step by step solution on how to calculate Heat Transfer Coefficient based on Wet Bulb Temperature?

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

h G = 0.01mol/s*m² \cdot 2250kJ/kg \cdot (\frac{0.021kg/kg of air - 0.016kg/kg of air}{30°C - 21°C})

Next Step Convert Units

∴

h G = 0.01mol/s*m² \cdot 2.3E+6J/kg \cdot (\frac{0.021kg/kg of air - 0.016kg/kg of air}{303.15K - 294.15K})

Next Step Prepare to Evaluate

∴

h G = 0.01 \cdot 2.3E+6 \cdot (\frac{0.021 - 0.016}{303.15 - 294.15})

LAST Step Evaluate

∴

h G = 12.5W/m²*K

Heat Transfer Coefficient based on Wet Bulb Temperature Formula Elements

Variables

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

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

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

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

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 Heat Transfer Coefficient based on Wet Bulb Temperature?

Heat Transfer Coefficient based on Wet Bulb Temperature evaluator uses Heat Transfer Coefficient of the Air Film = Mass Transfer Coefficient of the Moisture*Heat of Vaporization at Wet Bulb Temperature*((Air Humidity at Wet Bulb Temperature-Ambient Air Humidity)/(Temperature of Air-Wet Bulb Temperature)) to evaluate the Heat Transfer Coefficient of the Air Film, The Heat Transfer Coefficient based on Wet Bulb Temperature formula is defined as the heat transfer coefficient of the air-water mixture where the evaporation of air for its saturation is represented by the wet bulb temperature. Heat Transfer Coefficient of the Air Film is denoted by h_G symbol.

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

FAQs on Heat Transfer Coefficient based on Wet Bulb Temperature

What is the formula to find Heat Transfer Coefficient based on Wet Bulb Temperature?

The formula of Heat Transfer Coefficient based on Wet Bulb Temperature is expressed as Heat Transfer Coefficient of the Air Film = Mass Transfer Coefficient of the Moisture*Heat of Vaporization at Wet Bulb Temperature*((Air Humidity at Wet Bulb Temperature-Ambient Air Humidity)/(Temperature of Air-Wet Bulb Temperature)). Here is an example- 12.5 = 0.01*2250000*((0.021-0.016)/(303.15-294.15)).

How to calculate Heat Transfer Coefficient based on Wet Bulb Temperature?

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

Can the Heat Transfer Coefficient based on Wet Bulb Temperature be negative?

No, the Heat Transfer Coefficient based on Wet Bulb Temperature, measured in Heat Transfer Coefficient cannot be negative.

Which unit is used to measure Heat Transfer Coefficient based on Wet Bulb Temperature?

Heat Transfer Coefficient based on Wet Bulb Temperature is usually measured using the Watt per Square Meter per Kelvin[W/m²*K] for Heat Transfer Coefficient. Watt per Square Meter per Celcius[W/m²*K], Joule per Second per Square Meter per Kelvin[W/m²*K], Kilocalorie (IT) per Hour per Square Foot per Celcius[W/m²*K] are the few other units in which Heat Transfer Coefficient based on Wet Bulb Temperature can be measured.

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Heat Transfer Coefficient based on Wet Bulb Temperature Formula

Heat Transfer Coefficient based on Wet Bulb Temperature Example

Heat Transfer Coefficient based on Wet Bulb Temperature Solution

Heat Transfer Coefficient based on Wet Bulb Temperature Formula Elements

Other formulas in Adiabatic Saturation Temperature and Wet Bulb Temperature category

How to Evaluate Heat Transfer Coefficient based on Wet Bulb Temperature?

FAQs on Heat Transfer Coefficient based on Wet Bulb Temperature

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