Evaporation Loss Per Day given Change in Vapour Pressure Calculator

✖Rohwer's Formula Constant refers to an empirical coefficient used in Rohwer's equation to estimate evaporation rates, adjusting for local climatic conditions.ⓘ Rohwer's Formula Constant [C']			+10% -10%
✖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).ⓘ Atmospheric Pressure [P_a]			+10% -10%
✖Mean Wind Velocity refers to the wind in kilometers per hour at a height of about 9 meters above the ground.ⓘ Mean Wind Velocity [u]			+10% -10%
✖Change in Vapour Pressure refers to the difference between maximum vapour pressure and actual vapour pressure.ⓘ Change in Vapour Pressure [δV]			+10% -10%

✖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).ⓘ Evaporation Loss Per Day given Change in Vapour Pressure [E]

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Formula

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Evaporation Loss Per Day given Change in Vapour Pressure

Formula

E = C' \cdot (1.465 - (0.00732 \cdot P a)) \cdot (0.44 + (0.0732 \cdot u)) \cdot δV

Example

0.082919 cm = 0.75 \cdot (1.465 - (0.00732 \cdot 74.83 cmHg)) \cdot (0.44 + (0.0732 \cdot 8 km/h)) \cdot 0.2 cmHg

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Evaporation Loss Per Day given Change in Vapour Pressure Solution

STEP 0: Pre-Calculation Summary

Formula Used

Evaporation Loss per Day = Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))*Change in Vapour Pressure
E = C'*(1.465-(0.00732*P_a))*(0.44+(0.0732*u))*δV
This formula uses 5 Variables

Variables Used

Evaporation Loss per Day - (Measured in Centimeter) - 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).
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.
Atmospheric Pressure - (Measured in Centimeter Mercury (0 °C)) - 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).
Mean Wind Velocity - (Measured in Meter per Second) - Mean Wind Velocity refers to the wind in kilometers per hour at a height of about 9 meters above the ground.
Change in Vapour Pressure - (Measured in Centimeter Mercury (0 °C)) - Change in Vapour Pressure refers to the difference between maximum vapour pressure and actual vapour pressure.

STEP 1: Convert Input(s) to Base Unit

Rohwer's Formula Constant: 0.75 --> No Conversion Required
Atmospheric Pressure: 74.83 Centimeter Mercury (0 °C) --> 74.83 Centimeter Mercury (0 °C) No Conversion Required
Mean Wind Velocity: 8 Kilometer per Hour --> 2.22222222222222 Meter per Second (Check conversion here)
Change in Vapour Pressure: 0.2 Centimeter Mercury (0 °C) --> 0.2 Centimeter Mercury (0 °C) No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

E = C'*(1.465-(0.00732*P_a))*(0.44+(0.0732*u))*δV --> 0.75*(1.465-(0.00732*74.83))*(0.44+(0.0732*2.22222222222222))*0.2

Evaluating ... ...

E = 0.08291889376

STEP 3: Convert Result to Output's Unit

0.0008291889376 Meter -->0.08291889376 Centimeter (Check conversion here)

FINAL ANSWER

0.08291889376 ≈ 0.082919 Centimeter <-- Evaporation Loss per Day

(Calculation completed in 00.021 seconds)

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Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

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Meerut Institute of Engineering and Technology (MIET), Meerut

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< Evaporation and Transpiration Calculators

Monthly Mean Wind Velocity given Evaporation Loss Per Month

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

Maximum Vapour Pressure given Evaporation Loss Per Month

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

Actual Vapour Pressure given Evaporation Loss Per Month

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

Evaporation Loss Per Month

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

Evaporation Loss Per Day given Change in Vapour Pressure Formula

What is Evaporation Loss ?

The loss of a stored volatile liquid component or mixture by evaporation; controlled by temperature, pressure, and the presence or absence of vapour-recovery systems.

How to Calculate Evaporation Loss Per Day given Change in Vapour Pressure?

Evaporation Loss Per Day given Change in Vapour Pressure calculator uses Evaporation Loss per Day = Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))*Change in Vapour Pressure to calculate the Evaporation Loss per Day, The Evaporation Loss Per Day given Change in Vapour Pressure is defined as the evaporation loss per day when we have prior information of other parameters used. Evaporation Loss per Day is denoted by E symbol.

How to calculate Evaporation Loss Per Day given Change in Vapour Pressure using this online calculator? To use this online calculator for Evaporation Loss Per Day given Change in Vapour Pressure, enter Rohwer's Formula Constant (C'), Atmospheric Pressure (P_a), Mean Wind Velocity (u) & Change in Vapour Pressure (δV) and hit the calculate button. Here is how the Evaporation Loss Per Day given Change in Vapour Pressure calculation can be explained with given input values -> 8.291889 = 0.75*(1.465-(0.00732*99764.8526))*(0.44+(0.0732*2.22222222222222))*266.644.

FAQ

What is Evaporation Loss Per Day given Change in Vapour Pressure?

The Evaporation Loss Per Day given Change in Vapour Pressure is defined as the evaporation loss per day when we have prior information of other parameters used and is represented as E = C'*(1.465-(0.00732*P_a))*(0.44+(0.0732*u))*δV or Evaporation Loss per Day = Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))*Change in Vapour Pressure. Rohwer's Formula Constant refers to an empirical coefficient used in Rohwer's equation to estimate evaporation rates, adjusting for local climatic conditions, 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), Mean Wind Velocity refers to the wind in kilometers per hour at a height of about 9 meters above the ground & Change in Vapour Pressure refers to the difference between maximum vapour pressure and actual vapour pressure.

How to calculate Evaporation Loss Per Day given Change in Vapour Pressure?

The Evaporation Loss Per Day given Change in Vapour Pressure is defined as the evaporation loss per day when we have prior information of other parameters used is calculated using Evaporation Loss per Day = Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))*Change in Vapour Pressure. To calculate Evaporation Loss Per Day given Change in Vapour Pressure, you need Rohwer's Formula Constant (C'), Atmospheric Pressure (P_a), Mean Wind Velocity (u) & Change in Vapour Pressure (δV). With our tool, you need to enter the respective value for Rohwer's Formula Constant, Atmospheric Pressure, Mean Wind Velocity & Change in Vapour Pressure and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Evaporation Loss per Day?

In this formula, Evaporation Loss per Day uses Rohwer's Formula Constant, Atmospheric Pressure, Mean Wind Velocity & Change in Vapour Pressure. We can use 1 other way(s) to calculate the same, which is/are as follows -

Evaporation Loss per Day = Rohwer's Formula Constant*(1.465-(0.00732*Atmospheric Pressure))*(0.44+(0.0732*Mean Wind Velocity))*(Maximum Vapour Pressure-Actual Vapour Pressure)

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