Psychrometric Properties: STD ATM
45.0 10 to 45.0 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 | 45.0 10 | 6.39 | 45 | 60.635 | 0.005945 | 10 | 0.9099 | ASHRAE Fundamentals 2017 Ch.1 | 21.39 |
| STD ATM | 45.0 100 | 45.01 | 45 | 213.385 | 0.065042 | 100 | 0.9955 | ASHRAE Fundamentals 2017 Ch.1 | 45.19 |
| STD ATM | 45.0 20 | 16.88 | 45 | 76.297 | 0.012004 | 20 | 0.9187 | ASHRAE Fundamentals 2017 Ch.1 | 26.11 |
| STD ATM | 45.0 30 | 23.43 | 45 | 92.264 | 0.018182 | 30 | 0.9276 | ASHRAE Fundamentals 2017 Ch.1 | 29.69 |
| STD ATM | 45.0 40 | 28.29 | 45 | 108.546 | 0.024481 | 40 | 0.9368 | ASHRAE Fundamentals 2017 Ch.1 | 32.64 |
| STD ATM | 45.0 50 | 32.18 | 45 | 125.151 | 0.030905 | 50 | 0.9461 | ASHRAE Fundamentals 2017 Ch.1 | 35.19 |
| STD ATM | 45.0 60 | 35.44 | 45 | 142.089 | 0.037458 | 60 | 0.9556 | ASHRAE Fundamentals 2017 Ch.1 | 37.47 |
| STD ATM | 45.0 70 | 38.26 | 45 | 159.371 | 0.044145 | 70 | 0.9653 | ASHRAE Fundamentals 2017 Ch.1 | 39.57 |
| STD ATM | 45.0 80 | 40.75 | 45 | 177.007 | 0.050968 | 80 | 0.9751 | ASHRAE Fundamentals 2017 Ch.1 | 41.53 |
| STD ATM | 45.0 90 | 42.98 | 45 | 195.008 | 0.057932 | 90 | 0.9852 | ASHRAE Fundamentals 2017 Ch.1 | 43.39 |
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