Psychrometric Properties: STD ATM
-5.0 100 to -50.0 100
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 | -5.0 100 | -5.65 | -5 | 1.139 | 0.002476 | 100 | 0.7627 | ASHRAE Fundamentals 2017 Ch.1 | -5.17 |
| STD ATM | -5.0 20 | -25.09 | -5 | -3.8 | 0.000494 | 20 | 0.7602 | ASHRAE Fundamentals 2017 Ch.1 | -7.95 |
| STD ATM | -5.0 30 | -20.5 | -5 | -3.185 | 0.000741 | 30 | 0.7605 | ASHRAE Fundamentals 2017 Ch.1 | -8.07 |
| STD ATM | -5.0 40 | -17.12 | -5 | -2.568 | 0.000988 | 40 | 0.7608 | ASHRAE Fundamentals 2017 Ch.1 | -8.01 |
| STD ATM | -5.0 50 | -14.43 | -5 | -1.952 | 0.001235 | 50 | 0.7611 | ASHRAE Fundamentals 2017 Ch.1 | -7.8 |
| STD ATM | -5.0 60 | -12.18 | -5 | -1.335 | 0.001483 | 60 | 0.7614 | ASHRAE Fundamentals 2017 Ch.1 | -7.46 |
| STD ATM | -5.0 70 | -10.25 | -5 | -0.717 | 0.001731 | 70 | 0.7618 | ASHRAE Fundamentals 2017 Ch.1 | -7.01 |
| STD ATM | -5.0 80 | -8.55 | -5 | -0.099 | 0.001979 | 80 | 0.7621 | ASHRAE Fundamentals 2017 Ch.1 | -6.47 |
| STD ATM | -5.0 90 | -7.02 | -5 | 0.519 | 0.002227 | 90 | 0.7624 | ASHRAE Fundamentals 2017 Ch.1 | -5.86 |
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