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Actual Vapour Pressure given Evaporation Loss Per Day Formula

GoActual Vapour Pressure given Evaporation Loss Per Month Formula

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The Actual vapour pressure refers to the pressure exerted by the water vapour present in the air, reflecting the current humidity and temperature, typically measured in cm Hg or kPa. Check FAQs

v = V - (\frac{E}{C' \cdot (1.465 - (0.00732 \cdot P a)) \cdot (0.44 + (0.0732 \cdot u))})

v - Actual Vapour Pressure?V - Maximum Vapour Pressure?E - Evaporation Loss per Day?C' - Rohwer's Formula Constant?P_a - Atmospheric Pressure?u - Mean Wind Velocity?

Actual Vapour Pressure given Evaporation Loss Per Day Example

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Here is how the Actual Vapour Pressure given Evaporation Loss Per Day equation looks like with Values.

Here is how the Actual Vapour Pressure given Evaporation Loss Per Day equation looks like with Units.

Here is how the Actual Vapour Pressure given Evaporation Loss Per Day equation looks like.

0.4 = 0.6 - (\frac{8.29}{0.75 \cdot (1.465 - (0.00732 \cdot 74.83)) \cdot (0.44 + (0.0732 \cdot 8))})

0.4cmHg = 0.6cmHg - (\frac{8.29cm}{0.75 \cdot (1.465 - (0.00732 \cdot 74.83cmHg)) \cdot (0.44 + (0.0732 \cdot 8km/h))})

0.4 = 0.6 - (\frac{8.29}{0.75 \cdot (1.465 - (0.00732 \cdot 74.83)) \cdot (0.44 + (0.0732 \cdot 8))})

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Actual Vapour Pressure given Evaporation Loss Per Day Solution

Follow our step by step solution on how to calculate Actual Vapour Pressure given Evaporation Loss Per Day?

FIRST Step Consider the formula

v = V - (\frac{E}{C' \cdot (1.465 - (0.00732 \cdot P a)) \cdot (0.44 + (0.0732 \cdot u))})

Next Step Substitute values of Variables

∴

v = 0.6cmHg - (\frac{8.29cm}{0.75 \cdot (1.465 - (0.00732 \cdot 74.83cmHg)) \cdot (0.44 + (0.0732 \cdot 8km/h))})

Next Step Convert Units

∴

v = 0.6cmHg - (\frac{0.0829m}{0.75 \cdot (1.465 - (0.00732 \cdot 74.83cmHg)) \cdot (0.44 + (0.0732 \cdot 2.2222m/s))})

Next Step Prepare to Evaluate

∴

v = 0.6 - (\frac{0.0829}{0.75 \cdot (1.465 - (0.00732 \cdot 74.83)) \cdot (0.44 + (0.0732 \cdot 2.2222))})

Next Step Evaluate

∴

v = 533.34875705443Pa

Next Step Convert to Output's Unit

∴

v = 0.400045571664414cmHg

LAST Step Rounding Answer

∴

v = 0.4cmHg

Actual Vapour Pressure given Evaporation Loss Per Day Formula Elements

Variables

Actual Vapour Pressure

The Actual vapour pressure refers to the pressure exerted by the water vapour present in the air, reflecting the current humidity and temperature, typically measured in cm Hg or kPa.

Symbol: v

Measurement: PressureUnit: cmHg

Note: Value should be greater than 0.

Formulas to find Actual Vapour Pressure

Maximum Vapour Pressure

The Maximum Vapour Pressure refers to the highest pressure exerted by a vapour in equilibrium with its liquid at a given temperature, often measured in cm Hg or kPa.

Symbol: V

Measurement: PressureUnit: cmHg

Note: Value should be greater than 0.

Formulas to find Maximum Vapour Pressure

Evaporation Loss per Day

Evaporation Loss per Day refers to the amount of water lost from a surface due to evaporation within a single day, typically measured in millimeters (mm).

Symbol: E

Measurement: LengthUnit: cm

Note: Value should be greater than 0.

Formulas to find Evaporation Loss per Day

Rohwer's Formula Constant

Rohwer's Formula Constant refers to an empirical coefficient used in Rohwer's equation to estimate evaporation rates, adjusting for local climatic conditions.

Symbol: C'

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Rohwer's Formula Constant

Atmospheric Pressure

Atmospheric pressure refers to the force exerted by the weight of the atmosphere on a surface, typically measured in pascals (Pa), millibars (mb), or inches of mercury (inHg).

Symbol: P_a

Measurement: PressureUnit: cmHg

Note: Value should be greater than 0.

Formulas to find Atmospheric Pressure

Mean Wind Velocity

Mean Wind Velocity refers to the wind in kilometers per hour at a height of about 9 meters above the ground.

Symbol: u

Measurement: SpeedUnit: km/h

Note: Value should be greater than 0.

Formulas to find Mean Wind Velocity

Other Formulas to find Actual Vapour Pressure

Go Actual Vapour Pressure given Evaporation Loss Per Month

v = V - (\frac{E m}{C \cdot (1 + (\frac{u}{16}))})

Other formulas in Evaporation and Transpiration category

Go Evaporation Loss Per Month

E m = C \cdot (V - v) \cdot (1 + (\frac{u}{16}))

Go Maximum Vapour Pressure given Evaporation Loss Per Month

V = v + (\frac{E m}{C \cdot (1 + (\frac{u}{16}))})

Go Monthly Mean Wind Velocity given Evaporation Loss Per Month

u = ((\frac{E m}{C \cdot (V - v)}) - 1) \cdot 16

Go Evaporation Loss Per Month given Change in Vapour Pressure

E m = C \cdot δV \cdot (1 + (\frac{u}{16}))

How to Evaluate Actual Vapour Pressure given Evaporation Loss Per Day?

Actual Vapour Pressure given Evaporation Loss Per Day evaluator uses Actual Vapour Pressure = Maximum Vapour Pressure-(Evaporation Loss per Day/(Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity)))) to evaluate the Actual Vapour Pressure, The Actual Vapour Pressure given Evaporation Loss Per Day is defined as the pressure exerted by the water vapor present in the air, reflecting the current humidity and temperature, typically measured in cm Hg or kPa. Actual Vapour Pressure is denoted by v symbol.

How to evaluate Actual Vapour Pressure given Evaporation Loss Per Day using this online evaluator? To use this online evaluator for Actual Vapour Pressure given Evaporation Loss Per Day, enter Maximum Vapour Pressure (V), Evaporation Loss per Day (E), Rohwer's Formula Constant (C'), Atmospheric Pressure (P_a) & Mean Wind Velocity (u) and hit the calculate button.

FAQs on Actual Vapour Pressure given Evaporation Loss Per Day

What is the formula to find Actual Vapour Pressure given Evaporation Loss Per Day?

The formula of Actual Vapour Pressure given Evaporation Loss Per Day is expressed as Actual Vapour Pressure = Maximum Vapour Pressure-(Evaporation Loss per Day/(Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity)))). Here is an example- 0.000302 = 799.932-(0.0829/(0.75*(1.465-(0.00732*99764.8526))*(0.44+(0.0732*2.22222222222222)))).

How to calculate Actual Vapour Pressure given Evaporation Loss Per Day?

With Maximum Vapour Pressure (V), Evaporation Loss per Day (E), Rohwer's Formula Constant (C'), Atmospheric Pressure (P_a) & Mean Wind Velocity (u) we can find Actual Vapour Pressure given Evaporation Loss Per Day using the formula - Actual Vapour Pressure = Maximum Vapour Pressure-(Evaporation Loss per Day/(Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity)))).

What are the other ways to Calculate Actual Vapour Pressure?

Here are the different ways to Calculate Actual Vapour Pressure-

Actual Vapour Pressure=Maximum Vapour Pressure-(Evaporation Loss per Month/(Meyer's Constant*(1+(Mean Wind Velocity/16))))

Can the Actual Vapour Pressure given Evaporation Loss Per Day be negative?

No, the Actual Vapour Pressure given Evaporation Loss Per Day, measured in Pressure cannot be negative.

Which unit is used to measure Actual Vapour Pressure given Evaporation Loss Per Day?

Actual Vapour Pressure given Evaporation Loss Per Day is usually measured using the Centimeter Mercury (0 °C)[cmHg] for Pressure. Pascal[cmHg], Kilopascal[cmHg], Bar[cmHg] are the few other units in which Actual Vapour Pressure given Evaporation Loss Per Day can be measured.

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Actual Vapour Pressure given Evaporation Loss Per Day Formula

​GoActual Vapour Pressure given Evaporation Loss Per Month Formula

Actual Vapour Pressure given Evaporation Loss Per Day Example

Actual Vapour Pressure given Evaporation Loss Per Day Solution

Actual Vapour Pressure given Evaporation Loss Per Day Formula Elements

Other Formulas to find Actual Vapour Pressure

Other formulas in Evaporation and Transpiration category

How to Evaluate Actual Vapour Pressure given Evaporation Loss Per Day?

FAQs on Actual Vapour Pressure given Evaporation Loss Per Day

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GoActual Vapour Pressure given Evaporation Loss Per Month Formula