Psychometric Chart Link | Editor's Choice

): The actual mass of water vapor per unit mass of dry air (expressed as ). It forms the vertical axis (y-axis) on the far right. Specific Enthalpy (

slope gently downward from top-left to bottom-right. psychometric chart

Invented by in 1904, the chart graphically represents the thermodynamic properties of moist air at a constant pressure. It acts as a roadmap for understanding the relationship between temperature and humidity, helping designers create comfortable indoor environments. The Anatomy of the Chart ): The actual mass of water vapor per

closely align with wet-bulb lines but utilize a distinct scale on the outer perimeter. Specific volume lines are much steeper than wet-bulb lines. 3. Standard HVAC Processes Invented by in 1904, the chart graphically represents

The psychrometric chart is a graphical representation of the thermodynamic properties of moist air. It is an essential tool for HVAC engineers, meteorologists, and building scientists to visualize and calculate air conditioning, drying, and humidification processes.

Here’s a general , suitable for a lab report, training manual, or engineering summary.

) compares the actual vapor pressure to the saturation vapor pressure ( Pwscap P sub w s end-sub ) at the same dry-bulb temperature: