12th November 2019


Why do we measure wet bulb temperature?

A wet bulb thermometer measures the extent of cooling as moisture dries from a surface (evaporative cooling). The wet bulb temperature is always lower than the dry bulb temperature except when there is 100% relative humidity, making the wet bulb temperature a more accurate measurement of product temperature.

Beside this, why would you use wet bulb temperature?

Wet Bulb Temperature (WBT in short) is a measure of how much moisture or water vapour is present in the air. The difference between the dry bulb temperature (AKA normal temperature, DBT in short) and this determines how much dry the air is. If DBT-WBT is large, then the air has lower relative humidity.
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