When air is saturated (relative humidity = 100%), ( P_v = P_sat(T) ), and:
A psychrometric chart that displays the relationship between the humidity ratio (ω) and other thermodynamic properties of air, such as dry-bulb temperature (Tdb), relative humidity (RH), and enthalpy (h). humidity ratio psychrometric chart
This demonstrates how tracking W allows quantification of added moisture. When air is saturated (relative humidity = 100%),
The Humidity Ratio Psychrometric Chart is a valuable tool for engineers, researchers, and students working in the fields of HVAC, indoor air quality, and weather forecasting. ( P_v = P_sat(T) )