Moles of Air based on Molal Humidity Calculator

✖Moles of Water Vapour is defined as the amount(Kmol) of water vapour that is present in the air.ⓘ Moles of Water Vapour [n_Water]			+10% -10%
✖Molal Humidity is defined as the ratio of moles of vapour(condensable) to the moles of dry(non-condensable) gas.ⓘ Molal Humidity [H_m]			+10% -10%

✖Moles of Bone Dry Air is a sample of air that has no water. A definition of dry air is air that has a low relative humidity.ⓘ Moles of Air based on Molal Humidity [n_Air]

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Formula

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Moles of Air based on Molal Humidity

Formula

`"n"_{"Air"} = "n"_{"Water"}/"H"_{"m"}`

Example

`"15.38462kmol"="10kmol"/"0.65"`

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Moles of Air based on Molal Humidity Solution

STEP 0: Pre-Calculation Summary

Formula Used

Moles of Bone Dry Air = Moles of Water Vapour/Molal Humidity
n_Air = n_Water/H_m
This formula uses 3 Variables

Variables Used

Moles of Bone Dry Air - (Measured in Mole) - Moles of Bone Dry Air is a sample of air that has no water. A definition of dry air is air that has a low relative humidity.
Moles of Water Vapour - (Measured in Mole) - Moles of Water Vapour is defined as the amount(Kmol) of water vapour that is present in the air.
Molal Humidity - Molal Humidity is defined as the ratio of moles of vapour(condensable) to the moles of dry(non-condensable) gas.

STEP 1: Convert Input(s) to Base Unit

Moles of Water Vapour: 10 Kilomole --> 10000 Mole (Check conversion here)
Molal Humidity: 0.65 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

n_Air = n_Water/H_m --> 10000/0.65

Evaluating ... ...

n_Air = 15384.6153846154

STEP 3: Convert Result to Output's Unit

15384.6153846154 Mole -->15.3846153846154 Kilomole (Check conversion here)

FINAL ANSWER

15.3846153846154 ≈ 15.38462 Kilomole <-- Moles of Bone Dry Air

(Calculation completed in 00.004 seconds)

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Home » Engineering » Chemical Engineering » Mass Transfer Operations » Humidification & Dehumidification » Basics of Humidification Process » Moles of Air based on Molal Humidity

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Created by Vaibhav Mishra

DJ Sanghvi College of Engineering (DJSCE), Mumbai

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< 19 Basics of Humidification Process Calculators

Temperature based on Absolute Humidity and Humid Volume

Go Temperature of Air = ((273.15*(Humid Volume of Air/22.4))/((1/28.97)+(Absolute Humidity/18.02)))-273.15

Humid Volume based on Absolute Humidity and Temperature

Go Humid Volume of Air = ((1/28.97)+(Absolute Humidity/18.02))*22.4*((Temperature of Air+273.15)/273.15)

Absolute Humidity based on Humid Volume and Temperature

Go Absolute Humidity = 18.02*((Humid Volume of Air/22.4)*(273.15/(Temperature of Air+273.15))-(1/28.97))

Saturation Humidity based on Vapor Pressure

Go Saturation Humidity = (0.6207)*(Vapour Pressure of Water at DBT/(1-Vapour Pressure of Water at DBT))

Absolute Humidity based on Weight of Air

Go Absolute Humidity = (Weight of Water Vapour/Weight of Bone Dry Air)

Absolute Humidity based on Percentage and Saturation Humidity

Go Absolute Humidity = (Percentage Humidity/100)*Saturation Humidity

Saturation Humidity based on Percentage and Absolute Humidity

Go Saturation Humidity = Absolute Humidity*(100/Percentage Humidity)

Weight of Water Vapour based on Absolute Humidity

Go Weight of Water Vapour = Absolute Humidity*Weight of Bone Dry Air

Weight of Air based on Absolute Humidity

Go Weight of Bone Dry Air = Weight of Water Vapour/Absolute Humidity

Percentage Humidity

Go Percentage Humidity = (Absolute Humidity/Saturation Humidity)*100

Molal Humidity based on Moles of Air and Water

Go Molal Humidity = Moles of Water Vapour/Moles of Bone Dry Air

Moles of Water Vapour based on Molal Humidity

Go Moles of Water Vapour = Molal Humidity*Moles of Bone Dry Air

Moles of Air based on Molal Humidity

Go Moles of Bone Dry Air = Moles of Water Vapour/Molal Humidity

Mixing Ratio on Basis of Specific Humidity

Go Mixing Ratio = Specific Humidity/(1-Specific Humidity)

Specific Humidity on Basis of Mixing Ratio

Go Specific Humidity = Mixing Ratio/(1+Mixing Ratio)

Absolute Humidity based on Humid Heat

Go Absolute Humidity = (Humid Heat-1.006)/1.84

Absolute Humidity on Basis of Molal Humidity

Go Absolute Humidity = 0.6207*Molal Humidity

Molal Humidity based on Absolute Humidity

Go Molal Humidity = Absolute Humidity/0.6207

Humid Heat based on Absolute Humidity

Go Humid Heat = 1.005+1.88*Absolute Humidity

Moles of Air based on Molal Humidity Formula

Moles of Bone Dry Air = Moles of Water Vapour/Molal Humidity
n_Air = n_Water/H_m

What is Molal Humidity?

Molal humidity, denoted as molality, represents the concentration of water vapor in air. It is expressed as the mass of water vapor (in kilograms) per kilogram of dry air, measured in units of mol/kg. Unlike relative humidity, molal humidity is not influenced by temperature and pressure changes, making it a valuable parameter in various scientific and engineering applications, particularly in thermodynamics and the analysis of air-water vapor mixtures. This measurement offers a precise assessment of the moisture content within a given mass of dry air, making it indispensable in fields like meteorology, environmental science, and chemical engineering, where accurate vapor-phase calculations and interactions are essential.

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 Moles of Air based on Molal Humidity?

Moles of Air based on Molal Humidity calculator uses Moles of Bone Dry Air = Moles of Water Vapour/Molal Humidity to calculate the Moles of Bone Dry Air, The Moles of Air based on Molal Humidity formula is defined as the ratio of moles of water vapour present in humid air to that of the molal humidity ratio. Moles of Bone Dry Air is denoted by n_Air symbol.

How to calculate Moles of Air based on Molal Humidity using this online calculator? To use this online calculator for Moles of Air based on Molal Humidity, enter Moles of Water Vapour (n_Water) & Molal Humidity (H_m) and hit the calculate button. Here is how the Moles of Air based on Molal Humidity calculation can be explained with given input values -> 0.015385 = 10000/0.65.

FAQ

What is Moles of Air based on Molal Humidity?

The Moles of Air based on Molal Humidity formula is defined as the ratio of moles of water vapour present in humid air to that of the molal humidity ratio and is represented as n_Air = n_Water/H_m or Moles of Bone Dry Air = Moles of Water Vapour/Molal Humidity. Moles of Water Vapour is defined as the amount(Kmol) of water vapour that is present in the air & Molal Humidity is defined as the ratio of moles of vapour(condensable) to the moles of dry(non-condensable) gas.

How to calculate Moles of Air based on Molal Humidity?

The Moles of Air based on Molal Humidity formula is defined as the ratio of moles of water vapour present in humid air to that of the molal humidity ratio is calculated using Moles of Bone Dry Air = Moles of Water Vapour/Molal Humidity. To calculate Moles of Air based on Molal Humidity, you need Moles of Water Vapour (n_Water) & Molal Humidity (H_m). With our tool, you need to enter the respective value for Moles of Water Vapour & Molal Humidity 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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