Air Lite Psychrometric Calcs 1.1

Psychrometric calculator designed for professionals in the HVAC field, including engineers, designers, technicians, commissioning agents, and maintenance personnel. The tool supports both SI and IP units.

Inputs:

• Altitude
• Dry Bulb Temperature

And one of the following:

• Wet Bulb Temperature
• Relative Humidity
• Dew Point Temperature

To Calculate:

• Wet Bulb Temperature
• Relative Humidity
• Dew Point Temperature
• Atmospheric Pressure
• Barometric Pressure
• Enthalpy
• Humidity Ratio
• Density
• Specific Volume
• Vapor Pressure

The calculations are based on the ideal gas equations from The American Society of Heating Refrigerating and Air Conditioning Engineers (ASHRAE) Fundamentals 2009.

It is important to press the clear button between calculations. If more than three properties are entered, the application will default to using wet bulb temperature as the humidity input.