Psychrometry

What is Psychrometry?
Psychrometry is the study of physical properties of air.
Just like any food material or biological material, that has got physical properties like size, shape, mass, volume, density etc., air has also got some properties. The study of those properties is Psychrometry. Usually main properties taken into account in Psychrometry are
1.Dry Bulb temperature.
2. Wet Bulb Temperature
3. Relative Humidity
4.Enthalpy
5.Humid Volume
6.Dew Point temperature
7Humidity Ratio
These are mostly thermodynamic properties and are represented in a chart called Psychrometric Chart. Psychrometry is applicable mainly in gas - vapour mixtures, because of their application in drying, heating , air-conditioning and the like.

References:
1. Agricultural Engineering -Problem Solving Approach
2.Wikipedia