Psychrometric Chart

About Psychrometric Properties

Psychrometric properties describe the thermodynamic state of moist air. This calculator uses standard ASHRAE correlations to determine air properties from any two independent properties. Common applications include HVAC system design, comfort analysis, and industrial process optimization.

Key Properties:

• Dry Bulb Temperature: Air temperature measured by standard thermometer
• Wet Bulb Temperature: Temperature of adiabatic saturation
• Relative Humidity: Ratio of actual to saturated vapor pressure
• Humidity Ratio: Mass of water vapor per unit mass of dry air
• Enthalpy: Total heat content of moist air
• Specific Volume: Volume per unit mass of dry air