Partial Pressure of Water Vapor given Specific Humidity Calculator

✖Total Pressure of Moist Air is the pressure exerted by the mixture of air and water vapour which is equal to the sum of the respected pressures. It is also called barometric pressure.ⓘ Total Pressure of Moist Air [p_t]			+10% -10%
✖Specific Humidity is the ratio of the mass of water vapor to the total mass of the air parcel.ⓘ Specific Humidity [ω]			+10% -10%

✖Pressure of Water Vapor is the pressure exerted by the water vapour in the moist air or the mixture of dry air and water vapour.ⓘ Partial Pressure of Water Vapor given Specific Humidity [p_v]

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Formula

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Partial Pressure of Water Vapor given Specific Humidity

Formula

`"p"_{"v"} = "p"_{"t"}/(1+0.622/"ω")`

Example

`"28.66972Bar"="100Bar"/(1+0.622/"0.25")`

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Partial Pressure of Water Vapor given Specific Humidity Solution

STEP 0: Pre-Calculation Summary

Formula Used

Pressure of Water Vapor = Total Pressure of Moist Air/(1+0.622/Specific Humidity)
p_v = p_t/(1+0.622/ω)
This formula uses 3 Variables

Variables Used

Pressure of Water Vapor - (Measured in Pascal) - Pressure of Water Vapor is the pressure exerted by the water vapour in the moist air or the mixture of dry air and water vapour.
Total Pressure of Moist Air - (Measured in Pascal) - Total Pressure of Moist Air is the pressure exerted by the mixture of air and water vapour which is equal to the sum of the respected pressures. It is also called barometric pressure.
Specific Humidity - Specific Humidity is the ratio of the mass of water vapor to the total mass of the air parcel.

STEP 1: Convert Input(s) to Base Unit

Total Pressure of Moist Air: 100 Bar --> 10000000 Pascal (Check conversion here)
Specific Humidity: 0.25 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

p_v = p_t/(1+0.622/ω) --> 10000000/(1+0.622/0.25)

Evaluating ... ...

p_v = 2866972.47706422

STEP 3: Convert Result to Output's Unit

2866972.47706422 Pascal -->28.6697247706422 Bar (Check conversion here)

FINAL ANSWER

28.6697247706422 ≈ 28.66972 Bar <-- Pressure of Water Vapor

(Calculation completed in 00.004 seconds)

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Shri Govindram Seksaria Institute of Technology and Science (SGSITS), Indore

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< 7 Specific Humidity Calculators

Maximum Specific Humidity

Go Maximum Specific Humidity = (0.622*Partial Pressure of Water Vapour in Saturated Air)/(Total Pressure of Moist Air-Partial Pressure of Water Vapour in Saturated Air)

Specific Humidity given Partial Pressure of Water Vapor

Go Specific Humidity = (0.622*Pressure of Water Vapor)/(Total Pressure of Moist Air-Pressure of Water Vapor)

Total Pressure of Moist Air given Specific Humidity

Go Total Pressure of Moist Air = Pressure of Water Vapor+(0.622*Pressure of Water Vapor)/Specific Humidity

Partial Pressure of Water Vapor given Specific Humidity

Go Pressure of Water Vapor = Total Pressure of Moist Air/(1+0.622/Specific Humidity)

Partial Pressure of Dry Air given Specific Humidity

Go Partial Pressure of Dry Air = (0.622*Pressure of Water Vapor)/Specific Humidity

Specific Humidity given Specific Volumes

Go Specific Humidity = Specific Volume of Dry Air/Specific Volume of Water Vapor

Specific Humidity given Mass of Water Vapor and Dry Air

Go Specific Humidity = Mass of Water Vapor in Moist Air/Mass of Dry Air

Partial Pressure of Water Vapor given Specific Humidity Formula

Pressure of Water Vapor = Total Pressure of Moist Air/(1+0.622/Specific Humidity)
p_v = p_t/(1+0.622/ω)

What is Specific Humidity?

Specific humidity can be defined as the mass of water vapor in a unit mass of moist air, usually expressed as grams of vapor per kilogram of air or in air conditioning as grains per pound.

How to Calculate Partial Pressure of Water Vapor given Specific Humidity?

Partial Pressure of Water Vapor given Specific Humidity calculator uses Pressure of Water Vapor = Total Pressure of Moist Air/(1+0.622/Specific Humidity) to calculate the Pressure of Water Vapor, The Partial pressure of water vapor given specific humidity formula calculates the partial pressure of water vapor in the moist air by using the specific humidity. Pressure of Water Vapor is denoted by p_v symbol.

How to calculate Partial Pressure of Water Vapor given Specific Humidity using this online calculator? To use this online calculator for Partial Pressure of Water Vapor given Specific Humidity, enter Total Pressure of Moist Air (p_t) & Specific Humidity (ω) and hit the calculate button. Here is how the Partial Pressure of Water Vapor given Specific Humidity calculation can be explained with given input values -> 0.000287 = 10000000/(1+0.622/0.25).

FAQ

What is Partial Pressure of Water Vapor given Specific Humidity?

The Partial pressure of water vapor given specific humidity formula calculates the partial pressure of water vapor in the moist air by using the specific humidity and is represented as p_v = p_t/(1+0.622/ω) or Pressure of Water Vapor = Total Pressure of Moist Air/(1+0.622/Specific Humidity). Total Pressure of Moist Air is the pressure exerted by the mixture of air and water vapour which is equal to the sum of the respected pressures. It is also called barometric pressure & Specific Humidity is the ratio of the mass of water vapor to the total mass of the air parcel.

How to calculate Partial Pressure of Water Vapor given Specific Humidity?

The Partial pressure of water vapor given specific humidity formula calculates the partial pressure of water vapor in the moist air by using the specific humidity is calculated using Pressure of Water Vapor = Total Pressure of Moist Air/(1+0.622/Specific Humidity). To calculate Partial Pressure of Water Vapor given Specific Humidity, you need Total Pressure of Moist Air (p_t) & Specific Humidity (ω). With our tool, you need to enter the respective value for Total Pressure of Moist Air & Specific 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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