Psychrometric Properties: STD ATM
81.0 100 to 89.0 100
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 | Pr da | Pr s | Ws kg kg (kg/kg) | cp da kJ kgK (kJ/(kg·K)) | cp s kJ kgK (kJ/(kg·K)) | dry bulb C (C) | hda kJ kg (kJ/kg) | hs kJ kg (kJ/kg) | lambda da W mK (W/(m·K)) | lambda s W mK (W/(m·K)) | mu da uPas (uPa·s) | mu s uPas (uPa·s) | nu da 1e6m2 s (1e-6 m2/s) | nu s 1e6m2 s (1e-6 m2/s) | relative humidity pct (%) | rho da kg m3 (kg/m3) | rho s kg m3 (kg/m3) | sda kJ kgdaK (kJ/(kg·K)) | ss kJ kgdaK (kJ/(kg·K)) | vda m3 kg (m3/kg) | vs m3 kg (m3/kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STD ATM | 81.0 100 | 0.7016 | 0.8602 | 0.59747 | 1.0095 | 1.383 | 81 | 81.579 | 1,661.5 | 0.0303 | 0.02738 | 21.05 | 17.03 | 21.12 | 20.87 | 100 | 0.9967 | 0.8162 | 0.2615 | 4.9919 | 1.0033 | 1.9572 |
| STD ATM | 82.0 100 | 0.7015 | 0.8671 | 0.64722 | 1.0096 | 1.403 | 82 | 82.589 | 1,795.1 | 0.03037 | 0.02723 | 21.1 | 16.83 | 21.23 | 20.86 | 100 | 0.9939 | 0.8066 | 0.2644 | 5.3752 | 1.0061 | 2.0421 |
| STD ATM | 83.0 100 | 0.7014 | 0.8742 | 0.70309 | 1.0097 | 1.4242 | 83 | 83.598 | 1,945.1 | 0.03044 | 0.02705 | 21.14 | 16.6 | 21.33 | 20.84 | 100 | 0.9911 | 0.7969 | 0.2672 | 5.8045 | 1.009 | 2.1373 |
| STD ATM | 84.0 100 | 0.7013 | 0.8814 | 0.76623 | 1.0098 | 1.4467 | 84 | 84.608 | 2,114.6 | 0.03051 | 0.02686 | 21.19 | 16.37 | 21.44 | 20.8 | 100 | 0.9883 | 0.7869 | 0.2701 | 6.2883 | 1.0118 | 2.2446 |
| STD ATM | 85.0 100 | 0.7013 | 0.8888 | 0.83811 | 1.0099 | 1.4704 | 85 | 85.618 | 2,307.4 | 0.03058 | 0.02665 | 21.23 | 16.11 | 21.54 | 20.74 | 100 | 0.9856 | 0.7767 | 0.2729 | 6.8374 | 1.0146 | 2.3665 |
| STD ATM | 86.0 100 | 0.7012 | 0.8963 | 0.92058 | 1.0099 | 1.4955 | 86 | 86.628 | 2,528.6 | 0.03065 | 0.02642 | 21.28 | 15.84 | 21.65 | 20.67 | 100 | 0.9828 | 0.7663 | 0.2757 | 7.4658 | 1.0175 | 2.5062 |
| STD ATM | 87.0 100 | 0.7011 | 0.9039 | 1.0161 | 1.01 | 1.5221 | 87 | 87.638 | 2,784.7 | 0.03072 | 0.02618 | 21.32 | 15.55 | 21.76 | 20.57 | 100 | 0.9801 | 0.7558 | 0.2785 | 8.1917 | 1.0203 | 2.6676 |
| STD ATM | 88.0 100 | 0.701 | 0.9115 | 1.128 | 1.0101 | 1.5503 | 88 | 88.648 | 3,084.5 | 0.03079 | 0.02591 | 21.37 | 15.23 | 21.86 | 20.45 | 100 | 0.9774 | 0.745 | 0.2813 | 9.0393 | 1.0232 | 2.8564 |
| STD ATM | 89.0 100 | 0.701 | 0.9192 | 1.2606 | 1.0102 | 1.5802 | 89 | 89.658 | 3,439.8 | 0.03086 | 0.02563 | 21.41 | 14.91 | 21.97 | 20.31 | 100 | 0.9747 | 0.734 | 0.2841 | 10.042 | 1.026 | 3.0799 |
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