Moist Air - Properties
- pressure of water vapor at saturation
- humidity ratio at saturation
- specific volume of dry air
- specific volume of saturated mixture
- specific enthalpy of dry air
- specific enthalpy of saturated mixture
- specific entropy of saturated mixture
For full table with Specific Volume and Specific Enthalpy - rotate the screen!
| Temperature | Saturation Pressure (Pa) | Humidity ratio at Saturation (kgH2O/kgdry air) | Specific Volume | Specific Enthalpy | Specific Entropy (J/K.kgdry air) | |||
|---|---|---|---|---|---|---|---|---|
| oC | oF | Dry Air (m3/kg) | Saturated Mixture (m3/kg) | Dry Air (kJ/kgdry air) | Saturated Mixture (kJ/kgdry air) | |||
| -40 | -40 | 12.84 | 0.000079 | 0.660 | 0.660 | -40.2 | -40.0 | -90.7 |
| -30 | -22 | 38 | 0.00023 | 0.688 | 0.688 | -30.2 | -29.6 | -46.7 |
| -25 | -13 | 63.25 | 0.00039 | 0.702 | 0.703 | -25.2 | -24.2 | -24.7 |
| -20 | -4 | 103.2 | 0.00064 | 0.716 | 0.717 | -20.1 | -18.5 | -2.2 |
| -15 | 5 | 165.2 | 0.0010 | 0.731 | 0.732 | -15.1 | -12.6 | 21.2 |
| -10 | 14 | 259.2 | 0.0016 | 0.745 | 0.747 | -10.1 | -6.1 | 46.1 |
| -5 | 23 | 401.5 | 0.0025 | 0.759 | 0.762 | -5.0 | 1.2 | 76.4 |
| 0 | 32 | 610.8 | 0.0038 | 0.773 | 0.778 | 0 | 9.5 | 104.1 |
| 5 | 41 | 871.9 | 0.0054 | 0.788 | 0.794 | 5.0 | 18.6 | 137.4 |
| 10 | 50 | 1227 | 0.0077 | 0.802 | 0.812 | 10.1 | 29.5 | 175.4 |
| 15 | 59 | 1704 | 0.011 | 0.816 | 0.830 | 15.1 | 42.9 | 220.2 |
| 20 | 68 | 2337 | 0.015 | 0.830 | 0.850 | 20.1 | 58.2 | 273.3 |
| 25 | 77 | 3167 | 0.020 | 0.844 | 0.872 | 25.2 | 76.1 | 337.4 |
| 30 | 86 | 4243 | 0.027 | 0.859 | 0.896 | 30.2 | 99.2 | 415.6 |
| 35 | 95 | 5623 | 0.037 | 0.873 | 0.924 | 35.2 | 130.1 | 512.2 |
| 40 | 104 | 7378 | 0.049 | 0.887 | 0.957 | 40.2 | 166.4 | 532.3 |
| 45 | 113 | 9585 | 0.065 | 0.901 | 0.995 | 45.3 | 213.2 | 783.1 |
| 50 | 122 | 12339 | 0.087 | 0.915 | 1.042 | 50.3 | 275.9 | 975.3 |
| 55 | 131 | 14745 | 0.12 | 0.929 | 1.1 | 55.3 | 367.6 | 1221 |
| 60 | 140 | 19925 | 0.15 | 0.944 | 1.175 | 60.4 | 452.1 | 1544 |
| 65 | 149 | 25014 | 0.21 | 0.958 | 1.272 | 65.4 | 615.7 | 1974 |
| 70 | 158 | 31167 | 0.28 | 0.972 | 1.404 | 70.4 | 806.8 | 2565 |
| 75 | 167 | 38554 | 0.38 | 0.986 | 1.592 | 75.5 | 1078 | 3413 |
| 80 | 176 | 47365 | 0.55 | 1 | 1.879 | 80.5 | 1537 | 4711 |
| 85 | 185 | 57809 | 0.84 | 1.015 | 2.363 | 85.5 | 2317 | 6893 |
| 90 | 194 | 70112 | 1.03 | 3.340 | 3876 | 11281 | ||
Related Topics
• Air Psychrometrics
Moist and humid air calculations. Psychrometric charts and Mollier diagrams. Air-condition systems temperatures, absolute and relative humidities and moisture content in air.
Related Documents
Air - Absolute Humidity
Absolute humidity is the actual mass of water vapor present in the air water vapor mixture.
Air - Humidity Measurement from Dry and Wet Bulb Temperature
Relative humidity in moist air can estimated by measuring the dry and wet bulb temperature.
Air - Maximum Moisture Carrying Capacity
Maximum water content in humid air vs. temperature.
Air - Moisture Holding Capacity vs. Temperature
The moisture holding capacity of air increases with temperature.
Air - Prandtl Number
Prandtl number for air vs. temperature and pressure.
Air - Specific Heat vs. Pressure at Constant Temperature
Figures and tables with isobaric (Cp) and isochoric (Cv) specific heat of air at constant temperature and pressure ranging 0.01 to 10000 bara.
Air - Thermal Diffusivity vs. Temperature and Pressure
Figures and tables withdry air thermal diffusivity vs. temperarure and pressure. SI and Imperial units.
Air Properties - Thermal Conductivity vs. Temperature and Pressure Charts and Calculator
Online calculator with figures and tables showing air thermal conductivity vs. temperature and pressure. SI and imperial units.
Dry Air Thermodynamic and Physical Properties – Density, Specific Heat, Viscosity
THe essential thermodynamic properties of dry air like specific heat, ratio of specific heats, dynamic viscosity, thermal conductivity, Prandtl number, density and kinematic viscosity at temperatures ranging 175 - 1900 K.
Heat Recovery Efficiency
Classification of heat recovery efficiencies - temperature efficiency, moisture efficiency and enthalpy efficiency - online heat exchanger efficiency calculator.
Helium - Thermophysical Properties
Chemical, Physical and Thermal Properties of Helium - He.
Moist Air - Degree of Saturation
Humidity ratio of moist air to humidity ratio of saturated moist air.
Moist Air - Density vs. Pressure
Density of moist air vs. pressure ranging 75 - 1000 mmHg.
Moist Air - Enthalpy
Sensible and latent heat of moist air.
Moist Air - Partial Pressure and Daltons Law
The pressure in a mixture of dry air and water vapor - humid or moist air - can be estimated by using Daltons Law of partial pressures.
Moist Air - Psychrometric Table for Pressure 29.92 inHg
Dry and wet bulb temperatures, saturation pressure, water vapor weight, specific volume, heat and more.
Moist Air - Specific Volume
Specific volume of moist air is defined as the total volume of humid air per mass unit of dry air
Moist Air - Specific vs. Relative Humidity
Specific humidity of moist air vs. relative humidity, water vapor and air density.