Humidity Ratio Psychrometric Chart -

On a standard psychrometric chart:

This paper aims to:

The (also known as the mixing ratio or moisture content) is a fundamental metric in psychrometrics that represents the actual mass of water vapor present per unit mass of dry air. Unlike relative humidity, which fluctuates with temperature, the humidity ratio remains constant during sensible heating and cooling processes, making it a reliable indicator for HVAC calculations. Understanding the Humidity Ratio on a Psychrometric Chart humidity ratio psychrometric chart

The constant 0.62198 is the ratio of molecular weights of water (18.015) to air (28.9645). On a standard psychrometric chart: This paper aims