Psychrometric Calculator
Calculate humidity ratios, dew point, and other psychrometric properties of air-water mixtures
About this calculator
The Psychrometric Calculator determines key properties of humid air including humidity ratio, dew point temperature, wet bulb temperature, enthalpy, and specific volume. This tool is essential for HVAC engineers, meteorologists, and building professionals who need to analyze air-water vapor mixtures for climate control, ventilation design, and energy efficiency calculations. By understanding these psychrometric properties, users can optimize heating, cooling, and dehumidification systems while ensuring proper indoor air quality and comfort conditions.
How to use
Enter the known air properties such as dry bulb temperature, relative humidity, or wet bulb temperature into the input fields. Select your preferred units (Celsius/Fahrenheit, metric/imperial). Click calculate to instantly determine all psychrometric properties including humidity ratio, dew point, enthalpy, and specific volume of the air-water mixture.
Frequently asked questions
What is humidity ratio in psychrometrics?
Humidity ratio is the mass of water vapor per unit mass of dry air, typically expressed in pounds of moisture per pound of dry air or grams per kilogram.
How is dew point temperature calculated?
Dew point is the temperature at which air becomes saturated with water vapor. It's calculated based on current temperature and relative humidity levels.
Why are psychrometric calculations important for HVAC?
These calculations help HVAC professionals design efficient heating, cooling, and ventilation systems by understanding how air behaves at different temperature and humidity conditions.