Ambient Air Humidity based on Wet Bulb Temperature Solution

STEP 0: Pre-Calculation Summary
Formula Used
Ambient Air Humidity = Air Humidity at Wet Bulb Temperature-(Heat Transfer Coefficient of the Air Film/(Mass Transfer Coefficient of the Moisture*Heat of Vaporization at Wet Bulb Temperature))*(Temperature of Air-Wet Bulb Temperature)
YA = YW'-(hG/(kY'*λW))*(TG-TW)
This formula uses 7 Variables
Variables Used
Ambient Air Humidity - (Measured in Kg of water vapour per Kg of air) - Ambient air humidity refers to the moisture content present in the surrounding air at a given location an temperature.
Air Humidity at Wet Bulb Temperature - (Measured in Kg of water vapour per Kg of air) - 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.
Heat Transfer Coefficient of the Air Film - (Measured in Watt per Square Meter per Kelvin) - Heat Transfer Coefficient of the Air Film is the proportionality factor between the heat transfer rate and the temperature driving force.
Mass Transfer Coefficient of the Moisture - (Measured in Mole per Second Square Meter) - Mass Transfer Coefficient of the Moisture is the proportionality factor between the mass transfer rate and the concentration driving force.
Heat of Vaporization at Wet Bulb Temperature - (Measured in Joule per Kilogram) - 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.
Temperature of Air - (Measured in Kelvin) - The Temperature of Air is defined as the temperature at which the air-water mixture properties in humidification are calculated.
Wet Bulb Temperature - (Measured in Kelvin) - Wet bulb temperature is the lowest temperature attainable by evaporating water into air at constant pressure.
STEP 1: Convert Input(s) to Base Unit
Air Humidity at Wet Bulb Temperature: 0.021 Kg of water vapour per Kg of air --> 0.021 Kg of water vapour per Kg of air No Conversion Required
Heat Transfer Coefficient of the Air Film: 13.32 Watt per Square Meter per Kelvin --> 13.32 Watt per Square Meter per Kelvin No Conversion Required
Mass Transfer Coefficient of the Moisture: 0.01 Mole per Second Square Meter --> 0.01 Mole per Second Square Meter No Conversion Required
Heat of Vaporization at Wet Bulb Temperature: 2250 Kilojoule per Kilogram --> 2250000 Joule per Kilogram (Check conversion here)
Temperature of Air: 30 Celsius --> 303.15 Kelvin (Check conversion here)
Wet Bulb Temperature: 21 Celsius --> 294.15 Kelvin (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
YA = YW'-(hG/(kY'*λW))*(TG-TW) --> 0.021-(13.32/(0.01*2250000))*(303.15-294.15)
Evaluating ... ...
YA = 0.015672
STEP 3: Convert Result to Output's Unit
0.015672 Kg of water vapour per Kg of air --> No Conversion Required
FINAL ANSWER
0.015672 Kg of water vapour per Kg of air <-- Ambient Air Humidity
(Calculation completed in 00.004 seconds)

Credits

Created by Vaibhav Mishra
DJ Sanghvi College of Engineering (DJSCE), Mumbai
Vaibhav Mishra has created this Calculator and 300+ more calculators!
Verified by Heet
Thadomal Shahani Engineering College (Tsec), Mumbai
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10+ Adiabatic Saturation Temperature and Wet Bulb Temperature Calculators

Air Humidity at Wet Bulb Temperature based on Heat and Mass Transfer Rates
Go Air Humidity at Wet Bulb Temperature = Ambient Air Humidity+(Heat Transfer Coefficient of the Air Film/(Mass Transfer Coefficient of the Moisture*Heat of Vaporization at Wet Bulb Temperature))*(Temperature of Air-Wet Bulb Temperature)
Ambient Air Temperature based on Wet Bulb Temperature
Go Temperature of Air = Wet Bulb Temperature+(Air Humidity at Wet Bulb Temperature-Ambient Air Humidity)*((Mass Transfer Coefficient of the Moisture*Heat of Vaporization at Wet Bulb Temperature)/Heat Transfer Coefficient of the Air Film)
Ambient Air Humidity based on Wet Bulb Temperature
Go Ambient Air Humidity = Air Humidity at Wet Bulb Temperature-(Heat Transfer Coefficient of the Air Film/(Mass Transfer Coefficient of the Moisture*Heat of Vaporization at Wet Bulb Temperature))*(Temperature of Air-Wet Bulb Temperature)
Wet Bulb Temperature
Go Wet Bulb Temperature = Temperature of Air-(Air Humidity at Wet Bulb Temperature-Ambient Air Humidity)*((Mass Transfer Coefficient of the Moisture*Heat of Vaporization at Wet Bulb Temperature)/Heat Transfer Coefficient of the Air Film)
Saturated Exit Air Humidity based on Adiabatic Saturation Temperature
Go Saturated Exit Air Humidity = (Temperature of Air-Adiabatic Saturation Temperature)*(Humid Heat/Heat of Vaporization at Adiabatic Saturation Temp)+Inlet Air Humidity
Air Inlet Temperature based on Adiabatic Saturation Temperature
Go Temperature of Air = (Saturated Exit Air Humidity-Inlet Air Humidity)*(Heat of Vaporization at Adiabatic Saturation Temp/Humid Heat)+Adiabatic Saturation Temperature
Latent Heat of Air based on Adiabatic Saturation Temperature
Go Heat of Vaporization at Adiabatic Saturation Temp = (Temperature of Air-Adiabatic Saturation Temperature)/(Saturated Exit Air Humidity-Inlet Air Humidity)*Humid Heat
Inlet Air Humidity based on Adiabatic Saturation Temperature
Go Inlet Air Humidity = Saturated Exit Air Humidity-(Temperature of Air-Adiabatic Saturation Temperature)*(Humid Heat/Heat of Vaporization at Adiabatic Saturation Temp)
Humid Heat of Air based on Adiabatic Saturation Temperature
Go Humid Heat = (Saturated Exit Air Humidity-Inlet Air Humidity)/(Temperature of Air-Adiabatic Saturation Temperature)*Heat of Vaporization at Adiabatic Saturation Temp
Adiabatic Saturation Temperature
Go Adiabatic Saturation Temperature = Temperature of Air-(Saturated Exit Air Humidity-Inlet Air Humidity)*(Heat of Vaporization at Adiabatic Saturation Temp/Humid Heat)

Ambient Air Humidity based on Wet Bulb Temperature Formula

Ambient Air Humidity = Air Humidity at Wet Bulb Temperature-(Heat Transfer Coefficient of the Air Film/(Mass Transfer Coefficient of the Moisture*Heat of Vaporization at Wet Bulb Temperature))*(Temperature of Air-Wet Bulb Temperature)
YA = YW'-(hG/(kY'*λW))*(TG-TW)

What is Wet Bulb Temperature?

Wet bulb temperature is the lowest temperature that can be achieved by evaporating water into air at constant pressure, measured using a thermometer with its bulb covered by a wet cloth. It provides insights into the cooling potential of air through evaporation and is a key parameter in psychrometrics, commonly used in HVAC engineering and meteorology. Wet bulb temperature helps assess humidity levels, determine dew point, and evaluate the efficiency of cooling processes without direct application mentioned.

What is Humidification Process?

The humidification process involves adding moisture to indoor air to increase its relative humidity. It begins by measuring the current humidity level using a hygrometer. A desired humidity level is set, typically between 30% and 60%. Different humidification methods like evaporative, steam, or ultrasonic are chosen based on space requirements. The humidifier, often equipped with a humidistat, is then operated to release moisture. As the humidifier maintains the setpoint, it continuously monitors and controls humidity levels. Regular maintenance is essential to prevent issues and ensure safe and effective operation, especially in dry environments or during winter when indoor heating can dry out the air.

How to Calculate Ambient Air Humidity based on Wet Bulb Temperature?

Ambient Air Humidity based on Wet Bulb Temperature calculator uses Ambient Air Humidity = Air Humidity at Wet Bulb Temperature-(Heat Transfer Coefficient of the Air Film/(Mass Transfer Coefficient of the Moisture*Heat of Vaporization at Wet Bulb Temperature))*(Temperature of Air-Wet Bulb Temperature) to calculate the Ambient Air Humidity, The Ambient Air Humidity based on Wet Bulb Temperature formula is defined as the humidity of the ambient air based on its humidity at wet bulb temperature and the heat and mass transfer rates. Ambient Air Humidity is denoted by YA symbol.

How to calculate Ambient Air Humidity based on Wet Bulb Temperature using this online calculator? To use this online calculator for Ambient Air Humidity based on Wet Bulb Temperature, enter Air Humidity at Wet Bulb Temperature (YW'), Heat Transfer Coefficient of the Air Film (hG), Mass Transfer Coefficient of the Moisture (kY'), Heat of Vaporization at Wet Bulb Temperature W), Temperature of Air (TG) & Wet Bulb Temperature (TW) and hit the calculate button. Here is how the Ambient Air Humidity based on Wet Bulb Temperature calculation can be explained with given input values -> -5.307 = 0.021-(13.32/(0.01*2250000))*(303.15-294.15).

FAQ

What is Ambient Air Humidity based on Wet Bulb Temperature?
The Ambient Air Humidity based on Wet Bulb Temperature formula is defined as the humidity of the ambient air based on its humidity at wet bulb temperature and the heat and mass transfer rates and is represented as YA = YW'-(hG/(kY'*λW))*(TG-TW) or Ambient Air Humidity = Air Humidity at Wet Bulb Temperature-(Heat Transfer Coefficient of the Air Film/(Mass Transfer Coefficient of the Moisture*Heat of Vaporization at Wet Bulb Temperature))*(Temperature of Air-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, Heat Transfer Coefficient of the Air Film is the proportionality factor between the heat transfer rate and the temperature driving force, Mass Transfer Coefficient of the Moisture is the proportionality factor between the mass transfer rate and the concentration driving force, 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, The Temperature of Air is defined as the temperature at which the air-water mixture properties in humidification are calculated & Wet bulb temperature is the lowest temperature attainable by evaporating water into air at constant pressure.
How to calculate Ambient Air Humidity based on Wet Bulb Temperature?
The Ambient Air Humidity based on Wet Bulb Temperature formula is defined as the humidity of the ambient air based on its humidity at wet bulb temperature and the heat and mass transfer rates is calculated using Ambient Air Humidity = Air Humidity at Wet Bulb Temperature-(Heat Transfer Coefficient of the Air Film/(Mass Transfer Coefficient of the Moisture*Heat of Vaporization at Wet Bulb Temperature))*(Temperature of Air-Wet Bulb Temperature). To calculate Ambient Air Humidity based on Wet Bulb Temperature, you need Air Humidity at Wet Bulb Temperature (YW'), Heat Transfer Coefficient of the Air Film (hG), Mass Transfer Coefficient of the Moisture (kY'), Heat of Vaporization at Wet Bulb Temperature W), Temperature of Air (TG) & Wet Bulb Temperature (TW). With our tool, you need to enter the respective value for Air Humidity at Wet Bulb Temperature, Heat Transfer Coefficient of the Air Film, Mass Transfer Coefficient of the Moisture, Heat of Vaporization at Wet Bulb Temperature, Temperature of Air & Wet Bulb 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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