Psychrometric Table |top| File

| DBT (°C) | RH (%) | WBT (°C) | W (g/kg) | h (kJ/kg) | v (m³/kg) | T_dp (°C) | |----------|--------|----------|----------|-----------|-----------|-----------| | 25.0 | 50 | 18.2 | 9.92 | 50.3 | 0.857 | 14.0 | | 25.0 | 60 | 19.6 | 11.90 | 55.4 | 0.861 | 16.7 | | 30.0 | 50 | 22.5 | 13.25 | 63.8 | 0.876 | 18.6 |

1. Introduction A psychrometric table is a tabular representation of the thermodynamic properties of moist air. Unlike a psychrometric chart (which is graphical), a table provides discrete, high-precision numerical values for combinations of dry-bulb temperature and either relative humidity or wet-bulb temperature. These tables are essential for HVAC engineering, meteorology, agricultural drying processes, and any application requiring accurate psychrometric calculations without the interpolation errors inherent in reading a chart. 2. Fundamental Properties Defined in the Table Psychrometric tables typically list combinations of the following seven key properties at a given total (barometric) pressure (most commonly standard atmospheric pressure: 101.325 kPa or 14.696 psia, or 29.921 inHg at sea level). psychrometric table

| DBT (°C) | RH (%) | W (g/kg) | h (kJ/kg) | v (m³/kg) | T_dp (°C) | WBT (°C) | |----------|--------|----------|-----------|-----------|-----------|----------| | 20.0 | 40 | 5.86 | 34.9 | 0.835 | 6.0 | 12.0 | | 20.0 | 50 | 7.35 | 38.7 | 0.840 | 9.3 | 14.0 | | 20.0 | 60 | 8.86 | 42.6 | 0.845 | 12.0 | 15.7 | | 25.0 | 40 | 7.95 | 45.2 | 0.854 | 10.5 | 16.1 | | 25.0 | 50 | 9.92 | 50.3 | 0.857 | 14.0 | 18.2 | | 25.0 | 60 | 11.90 | 55.4 | 0.861 | 16.7 | 19.6 | | 30.0 | 40 | 10.60 | 57.2 | 0.873 | 15.0 | 20.5 | | 30.0 | 50 | 13.25 | 63.8 | 0.876 | 18.6 | 22.5 | | 30.0 | 60 | 15.90 | 70.6 | 0.881 | 21.4 | 24.0 | | DBT (°C) | RH (%) | WBT