Psychrometric Properties: STD ATM
0.0 10 to 0.0 90
Psychrometric properties of moist air — humidity ratio, enthalpy, dew point, wet-bulb temperature, and specific volume as functions of dry-bulb temperature and relative humidity; also includes saturation thermodynamic and transport properties (viscosity, thermal conductivity, Prandtl number, density) from ASHRAE 2021 tabulated data
| pressure condition | lookup key | dew point C (C) | dry bulb C (C) | enthalpy kJ kg (kJ/kg) | humidity ratio kg kg (kg/kg) | relative humidity pct (%) | specific volume m3 kg (m3/kg) | standard | wet bulb C (C) |
|---|---|---|---|---|---|---|---|---|---|
| STD ATM | 0.0 10 | -28.08 | 0 | 0.939 | 0.000375 | 10 | 0.7743 | ASHRAE Fundamentals 2017 Ch.1 | -4.64 |
| STD ATM | 0.0 100 | 0.01 | 0 | 9.44 | 0.003774 | 100 | 0.7785 | ASHRAE Fundamentals 2017 Ch.1 | -0.13 |
| STD ATM | 0.0 20 | -20.33 | 0 | 1.879 | 0.000751 | 20 | 0.7747 | ASHRAE Fundamentals 2017 Ch.1 | -4.53 |
| STD ATM | 0.0 30 | -15.54 | 0 | 2.82 | 0.001128 | 30 | 0.7752 | ASHRAE Fundamentals 2017 Ch.1 | -4.29 |
| STD ATM | 0.0 40 | -12.01 | 0 | 3.762 | 0.001504 | 40 | 0.7757 | ASHRAE Fundamentals 2017 Ch.1 | -3.95 |
| STD ATM | 0.0 50 | -9.19 | 0 | 4.706 | 0.001882 | 50 | 0.7761 | ASHRAE Fundamentals 2017 Ch.1 | -3.5 |
| STD ATM | 0.0 60 | -6.84 | 0 | 5.65 | 0.002259 | 60 | 0.7766 | ASHRAE Fundamentals 2017 Ch.1 | -2.96 |
| STD ATM | 0.0 70 | -4.81 | 0 | 6.596 | 0.002637 | 70 | 0.7771 | ASHRAE Fundamentals 2017 Ch.1 | -2.35 |
| STD ATM | 0.0 80 | -3.03 | 0 | 7.543 | 0.003016 | 80 | 0.7776 | ASHRAE Fundamentals 2017 Ch.1 | -1.67 |
| STD ATM | 0.0 90 | -1.44 | 0 | 8.491 | 0.003395 | 90 | 0.778 | ASHRAE Fundamentals 2017 Ch.1 | -0.93 |
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