Psychrometric Calculator

Psychrometrics is the study of the thermodynamic properties of moist air, a fundamental topic in HVAC engineering because humidity, temperature, and air-water vapor interactions determine comfort, ventilation requirements, dehumidification loads, and equipment sizing. Key properties such as humidity ratio, dew point temperature, enthalpy, and specific volume are used in cooling/heating load analysis, coil selection, and air-handling system design. This psychrometric calculator estimates these properties based on dry-bulb temperature and relative humidity using standard ASHRAE equations, including saturation vapor pressure (Tetens correlation), moisture content relations, and moist-air enthalpy formulas. Once the user inputs dry-bulb temperature and relative humidity, the calculator computes partial vapor pressure, humidity ratio, dew point, specific volume, and enthalpy, providing fast engineering values without the need to manually reference a psychrometric chart.

As powerful as this calculator is, real-world HVAC design often demands a deeper analysis of airflow, heat transfer, and moisture behavior inside ducts, rooms, AHUs, coils, and diffusers—something traditional hand calculations cannot fully capture. For advanced engineers who want to visualize airflow patterns, temperature distribution, ventilation performance, and thermal comfort in 3D, tensorHVAC-Pro provides a dedicated HVAC-focused flow and thermal simulation environment. Unlike general CFD tools, tensorHVAC-Pro is designed specifically for HVAC engineers, offering automated meshing, predefined HVAC templates, and intuitive workflows without requiring CFD expertise. It is the perfect next step for engineers who begin with calculators like this and want to move toward deeper, simulation-driven HVAC design.