Evaporation Loss Per Day 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%
✖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.ⓘ Maximum Vapour Pressure [V]			+10% -10%
✖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.ⓘ Actual Vapour Pressure [v]			+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 [E]

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Formula

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Evaporation Loss Per Day

Formula

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

Example

8.291889 cm = 0.75 \cdot (1.465 - (0.00732 \cdot 74.83 cmHg)) \cdot (0.44 + (0.0732 \cdot 8 km/h)) \cdot (0.6 cmHg - 0.4 cmHg)

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Evaporation Loss Per Day 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))*(Maximum Vapour Pressure-Actual Vapour Pressure)
E = C'*(1.465-(0.00732*P_a))*(0.44+(0.0732*u))*(V-v)
This formula uses 6 Variables

Variables Used

Evaporation Loss per Day - (Measured in Meter) - 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.
Maximum Vapour Pressure - (Measured in Centimeter Mercury (0 °C)) - 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.
Actual Vapour Pressure - (Measured in Centimeter Mercury (0 °C)) - 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.

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)
Maximum Vapour Pressure: 0.6 Centimeter Mercury (0 °C) --> 0.6 Centimeter Mercury (0 °C) No Conversion Required
Actual Vapour Pressure: 0.4 Centimeter Mercury (0 °C) --> 0.4 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))*(V-v) --> 0.75*(1.465-(0.00732*74.83))*(0.44+(0.0732*2.22222222222222))*(0.6-0.4)

Evaluating ... ...

E = 0.08291889376

STEP 3: Convert Result to Output's Unit

0.08291889376 Meter -->8.291889376 Centimeter (Check conversion here)

FINAL ANSWER

8.291889376 ≈ 8.291889 Centimeter <-- Evaporation Loss per Day

(Calculation completed in 00.004 seconds)

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Credits

Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Calculator and 2100+ more calculators!

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

Ishita Goyal has verified this Calculator and 2600+ more calculators!

< 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 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?

Evaporation Loss Per Day calculator uses 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) to calculate the Evaporation Loss per Day, The Evaporation Loss Per Day is defined as the amount of water lost from a surface due to evaporation within a single day, typically measured in millimeters (mm) or liters (L). Evaporation Loss per Day is denoted by E symbol.

How to calculate Evaporation Loss Per Day using this online calculator? To use this online calculator for Evaporation Loss Per Day, enter Rohwer's Formula Constant (C'), Atmospheric Pressure (P_a), Mean Wind Velocity (u), Maximum Vapour Pressure (V) & Actual Vapour Pressure (v) and hit the calculate button. Here is how the Evaporation Loss Per Day calculation can be explained with given input values -> 829.1889 = 0.75*(1.465-(0.00732*99764.8526))*(0.44+(0.0732*2.22222222222222))*(799.932-533.288).

FAQ

What is Evaporation Loss Per Day?

The Evaporation Loss Per Day is defined as the amount of water lost from a surface due to evaporation within a single day, typically measured in millimeters (mm) or liters (L) and is represented as E = C'*(1.465-(0.00732*P_a))*(0.44+(0.0732*u))*(V-v) or 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). 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, 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 & 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.

How to calculate Evaporation Loss Per Day?

The Evaporation Loss Per Day is defined as the amount of water lost from a surface due to evaporation within a single day, typically measured in millimeters (mm) or liters (L) is calculated using 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). To calculate Evaporation Loss Per Day, you need Rohwer's Formula Constant (C'), Atmospheric Pressure (P_a), Mean Wind Velocity (u), Maximum Vapour Pressure (V) & Actual Vapour Pressure (v). With our tool, you need to enter the respective value for Rohwer's Formula Constant, Atmospheric Pressure, Mean Wind Velocity, Maximum Vapour Pressure & Actual 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, Maximum Vapour Pressure & Actual 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))*Change in Vapour Pressure

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