Wet Bulb Temperature Calculator, Formula, Calculation, Example

Wet Bulb Calculator:

What many people may fail to take into account is the combined effect of heat and humidity – the wet bulb effect. This tool will teach you about the wet bulb and calculate its size.

The wet bulb calculator works on a simple principle. You can use this to work out the wet bulb temperature from two numbers: temperature and humidity. To find some wet bulb applications,

In the following sections you will find a step-by-step process for calculating the wet bulb temperature manually.

Get solved example questions, formulas and useful information related to wet bulb. Below are the steps on how to easily find the wet bulb temperature. Get temperature and humidity from query.

Know the formula for calculating wet bulb temperature. Substitute the given values ​​into the formula. Perform all necessary math operations to obtain the wet bulb temperature value.

Wet Bulb Formula

Tw is the wet bulb temperature Tw(oc) in degree Celsius is equal to the the air temperature which can be measured using a thermometer T(oc) in degree celsius  and Relative humidity rh% in percent .Hence the wet bulb formula can be written as

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Tw(oc)=T(oc)*arctan[0.15199*rh%+8.313659)^(1/2)]+arctan(T+rh%)artan(1.676331)+0.00391838*(rh%)^(3/2)*arctan(0.023101*rh%)-4.686035

Where

Tw is the wet bulb temperature

T=is the air temperature which can be measured using a thermometer

Rh% is the relative humidity.It is the ratio of amount of water vapor in the air to the amount of water in the given temperature

Welt Bulb Globe Temperature:

It is a type of apparent temperature.Wet-bulb globe temperature is used to estimate the effect of humidity temperature, sun light and wind speed on humans.The wet bolb globe temperature equation is follows

WBGT=0.7*TW+0.2+Tg+0.1*T

Where

Tg=is the globe thermometer temperature

Another formula is WBGT=0.7*TW+0.3*T

Example:1

If the ambient temperature is 45c and a relative humidity is 30%,then find wet bulb temperature?

Answer:

Given that

Temperature T=45

Relative humidity rh=30%

The wet-bulb temperature formula is

Tw=T*arctan[0.15199*rh%+8.313659)^(1/2)]+arctan(T+rh%)artan(1.676331)+0.00391838*(rh%)^(3/2)*arctan(0.023101*rh%)-4.686035

Tw=45*arctan[0.151977*(30%+8.313659)^(1/2)]+arctan(45+30%)-arctan(30%-1.676331)+0.00391838*(30%)^(3/2)*arctan(0.023101*30%)-4.686035

Wet bulb temperature=[29.69463021] 0C

Example:1

If the ambient temperature is 45c and a relative humidity is 30%,then find wet bulb temperature?

Answer:

Given that

Temperature T=45c

Relative humidity rh=30%

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The wet-bulb temperature formula is

Tw=T*arctan[0.15199*rh%+8.313659)^(1/2)]+arctan(T+rh%)artan(1.676331)+0.00391838*(rh%)^(3/2)*arctan(0.023101*rh%)-4.686035

Tw=45*arctan[0.151977*(30%+8.313659)^(1/2)]+arctan(45+30%)-arctan(30%-1.676331)+0.00391838*(30%)^(3/2)*arctan(0.023101*30%)-4.686035

Wet bulb temperature=[29.69463021] 0C

Example:2

If the ambient temperature is 28c and a relative humidity is 15%,then find wet bulb temperature?

Answer:

Given that

Temperature T=28c

Relative humidity rh=15%

The wet-bulb temperature formula is

Tw=T*arctan[0.15199*rh%+8.313659)^(1/2)]+arctan(T+rh%)artan(1.676331)+0.00391838*(rh%)^(3/2)*arctan(0.023101*rh%)-4.686035

Tw=28*arctan[0.15977*(15%+8.313659)^(1/2)+arctan(28+15%)-arctan(15%-1.676331)+0.00391838*(15%)^(3/2)*arctan(0.023101*15%)-4.686035

Wet bulb temperature=[13.1671876]C

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