Partial Pressure of Vapor given Vapor Density 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%
✖Vapor Density is defined as the mass of water vapor present in 1 m³ of dry air. It is also called absolute humidity.ⓘ Vapor Density [ρ_v]			+10% -10%
✖Dry bulb temperature is the temperature of air measured by a thermometer freely exposed to the air but shielded from radiation and moisture.ⓘ Dry Bulb Temperature [t_d]			+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 Vapor given Vapor Density [p_v]

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Formula

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Partial Pressure of Vapor given Vapor Density

Formula

`"p"_{"v"} = "p"_{"t"}-(("ρ"_{"v"}*287*"t"_{"d"})/"ω")`

Example

`"-28.576Bar"="100Bar"-(("32kg/m³"*287*"350K")/"0.25")`

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Partial Pressure of Vapor given Vapor Density Solution

STEP 0: Pre-Calculation Summary

Formula Used

Pressure of Water Vapor = Total Pressure of Moist Air-((Vapor Density*287*Dry Bulb Temperature)/Specific Humidity)
p_v = p_t-((ρ_v*287*t_d)/ω)
This formula uses 5 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.
Vapor Density - (Measured in Kilogram per Cubic Meter) - Vapor Density is defined as the mass of water vapor present in 1 m³ of dry air. It is also called absolute humidity.
Dry Bulb Temperature - (Measured in Kelvin) - Dry bulb temperature is the temperature of air measured by a thermometer freely exposed to the air but shielded from radiation and moisture.
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)
Vapor Density: 32 Kilogram per Cubic Meter --> 32 Kilogram per Cubic Meter No Conversion Required
Dry Bulb Temperature: 350 Kelvin --> 350 Kelvin No Conversion Required
Specific Humidity: 0.25 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

p_v = p_t-((ρ_v*287*t_d)/ω) --> 10000000-((32*287*350)/0.25)

Evaluating ... ...

p_v = -2857600

STEP 3: Convert Result to Output's Unit

-2857600 Pascal -->-28.576 Bar (Check conversion here)

FINAL ANSWER

-28.576 Bar <-- Pressure of Water Vapor

(Calculation completed in 00.020 seconds)

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< 6 Vapour Density Calculators

Dry Bulb Temperature given Vapor Density

Go Dry Bulb Temperature = (Specific Humidity*(Total Pressure of Moist Air-Pressure of Water Vapor))/(287*Vapor Density)

Vapour Density

Go Vapor Density = (Specific Humidity*(Total Pressure of Moist Air-Pressure of Water Vapor))/(287*Dry Bulb Temperature)

Partial Pressure of Vapor given Vapor Density

Go Pressure of Water Vapor = Total Pressure of Moist Air-((Vapor Density*287*Dry Bulb Temperature)/Specific Humidity)

Specific Humidity given Vapor Density

Go Specific Humidity = (Vapor Density*Dry Bulb Temperature*287)/(Total Pressure of Moist Air-Pressure of Water Vapor)

Total Pressure of Moist Air given Vapour Density

Go Total Pressure of Moist Air = (287*Vapor Density*Dry Bulb Temperature)/Specific Humidity+Pressure of Water Vapor

Partial Pressure of Dry Air given Vapor Density

Go Partial Pressure of Dry Air = (Vapor Density*287*Dry Bulb Temperature)/Specific Humidity

Partial Pressure of Vapor given Vapor Density Formula

Pressure of Water Vapor = Total Pressure of Moist Air-((Vapor Density*287*Dry Bulb Temperature)/Specific Humidity)
p_v = p_t-((ρ_v*287*t_d)/ω)

What is Vapor density?

Vapor density is defined as the mass of water vapor present in 1 cubic meter of dry air. It is also called absolute humidity.

How to Calculate Partial Pressure of Vapor given Vapor Density?

Partial Pressure of Vapor given Vapor Density calculator uses Pressure of Water Vapor = Total Pressure of Moist Air-((Vapor Density*287*Dry Bulb Temperature)/Specific Humidity) to calculate the Pressure of Water Vapor, The Partial pressure of vapor given vapor density formula calculates the pressure exerted by the water vapor in the air-vapor mixture by using vapor density. Pressure of Water Vapor is denoted by p_v symbol.

How to calculate Partial Pressure of Vapor given Vapor Density using this online calculator? To use this online calculator for Partial Pressure of Vapor given Vapor Density, enter Total Pressure of Moist Air (p_t), Vapor Density (ρ_v), Dry Bulb Temperature (t_d) & Specific Humidity (ω) and hit the calculate button. Here is how the Partial Pressure of Vapor given Vapor Density calculation can be explained with given input values -> -0.000286 = 10000000-((32*287*350)/0.25).

FAQ

What is Partial Pressure of Vapor given Vapor Density?

The Partial pressure of vapor given vapor density formula calculates the pressure exerted by the water vapor in the air-vapor mixture by using vapor density and is represented as p_v = p_t-((ρ_v*287*t_d)/ω) or Pressure of Water Vapor = Total Pressure of Moist Air-((Vapor Density*287*Dry Bulb Temperature)/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, Vapor Density is defined as the mass of water vapor present in 1 m³ of dry air. It is also called absolute humidity, Dry bulb temperature is the temperature of air measured by a thermometer freely exposed to the air but shielded from radiation and moisture & 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 Vapor given Vapor Density?

The Partial pressure of vapor given vapor density formula calculates the pressure exerted by the water vapor in the air-vapor mixture by using vapor density is calculated using Pressure of Water Vapor = Total Pressure of Moist Air-((Vapor Density*287*Dry Bulb Temperature)/Specific Humidity). To calculate Partial Pressure of Vapor given Vapor Density, you need Total Pressure of Moist Air (p_t), Vapor Density (ρ_v), Dry Bulb Temperature (t_d) & Specific Humidity (ω). With our tool, you need to enter the respective value for Total Pressure of Moist Air, Vapor Density, Dry Bulb Temperature & 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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