Psychrometric Properties: STD ATM
15.0 10 to 15.0 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 | 15.0 10 | -16.41 | 15 | 17.742 | 0.001049 | 10 | 0.8177 | ASHRAE Fundamentals 2017 Ch.1 | 4.07 |
| STD ATM | 15.0 100 | 15.03 | 15 | 42.016 | 0.010647 | 100 | 0.8303 | ASHRAE Fundamentals 2017 Ch.1 | 14.97 |
| STD ATM | 15.0 20 | -7.78 | 15 | 20.403 | 0.002101 | 20 | 0.8191 | ASHRAE Fundamentals 2017 Ch.1 | 5.69 |
| STD ATM | 15.0 30 | -2.42 | 15 | 23.072 | 0.003156 | 30 | 0.8204 | ASHRAE Fundamentals 2017 Ch.1 | 7.04 |
| STD ATM | 15.0 40 | 1.53 | 15 | 25.751 | 0.004216 | 40 | 0.8218 | ASHRAE Fundamentals 2017 Ch.1 | 8.25 |
| STD ATM | 15.0 50 | 4.69 | 15 | 28.439 | 0.005279 | 50 | 0.8232 | ASHRAE Fundamentals 2017 Ch.1 | 9.4 |
| STD ATM | 15.0 60 | 7.33 | 15 | 31.136 | 0.006345 | 60 | 0.8246 | ASHRAE Fundamentals 2017 Ch.1 | 10.52 |
| STD ATM | 15.0 70 | 9.6 | 15 | 33.842 | 0.007415 | 70 | 0.826 | ASHRAE Fundamentals 2017 Ch.1 | 11.62 |
| STD ATM | 15.0 80 | 11.61 | 15 | 36.558 | 0.008489 | 80 | 0.8274 | ASHRAE Fundamentals 2017 Ch.1 | 12.73 |
| STD ATM | 15.0 90 | 13.4 | 15 | 39.282 | 0.009566 | 90 | 0.8289 | ASHRAE Fundamentals 2017 Ch.1 | 13.84 |
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