Psychrometric Chart How To Read _top_ Jun 2026

To the untrained eye, a psychrometric chart looks like a tangled spiderweb of lines, curves, and numbers. To HVAC engineers, meteorologists, and building scientists, however, it is one of the most powerful tools in existence. It is a map of the physical and thermodynamic properties of moist air.

Master the intersection of Dry-Bulb and Relative Humidity, and the rest of the chart will follow. Print a large copy, grab a ruler, and start plotting the air in your own home. You will be surprised at what the invisible world has to tell you. psychrometric chart how to read

Move horizontally to the left until you hit the outermost curved line (the Saturation Curve). To the untrained eye, a psychrometric chart looks

💡 At 100% Relative Humidity (the saturation curve), the Dry Bulb, Wet Bulb, and Dew Point temperatures are all identical . How to Read a Psychrometric Chart - Process Sensing Master the intersection of Dry-Bulb and Relative Humidity,

Place a dot at the intersection. This is your State Point. Now, we can determine everything else about this air.