How to use the Psychrometric Calculator？

1. Input Data

• Dry Bulb Temperature: Enter the air temperature in degrees Celsius. This is the temperature you’d read on a standard thermometer.
• Relative Humidity: Input the relative humidity as a percentage. This represents the amount of moisture in the air compared to the maximum it could hold at that temperature.
• Atmospheric Pressure: The default is set to 101.325 kPa (standard atmospheric pressure at sea level), but you can adjust this if you’re working at different pressures.
• Altitude: Enter the altitude in meters. This helps in adjusting calculations for locations above sea level.

2. Calculate
Click the “Calculate” button after entering all required data. The tool will process your inputs using psychrometric equations.

3. Interpret Results
The calculator will display several key psychrometric properties:

• Dew Point: This is the temperature at which water vapor in the air will condense into liquid water. It’s crucial for understanding when condensation might occur on surfaces.
• Wet Bulb Temperature: This temperature is important for evaporative cooling processes and indicates the lowest temperature achievable through evaporative cooling.
• Humidity Ratio: This shows the mass of water vapor per unit mass of dry air, expressed in grams of moisture per kilogram of dry air.
• Enthalpy: This represents the total heat content of the air, including both sensible and latent heat. It’s essential for energy calculations in HVAC systems.
• Specific Volume: This indicates the volume occupied by a unit mass of air, useful in air flow calculations.

Limitations:
Remember that this calculator assumes standard atmospheric conditions and uses simplified equations. For extremely precise calculations or unusual conditions (e.g., very high altitudes or extreme temperatures), more complex models might be necessary.

By using this psychrometric calculator, you can quickly obtain accurate information about air properties, saving time on manual calculations and providing valuable insights for various applications in engineering, environmental science, and building management.