Thermal properties of air at different temperatures - density, viscosity, critical temperature and pressure, triple point, enthalpi and entropi, thermal conductivity and diffusivity and more.Īmmonia Gas - Density vs. Temperature and Pressureįigures and tables withdry air thermal diffusivity vs. SI and imperial units.Īir - Thermal Diffusivity vs. Online calculator with figures and tables showing air thermal conductivity vs. SI and imperial units.Īir - Thermal Conductivity vs. Online calculator with figures and tables showing specific heat (Cp and Cv) of dry air vs. Pressure at Constant Temperatureįigures and tables with isobaric (Cp) and isochoric (Cv) specific heat of air at constant temperature and pressure ranging 0.01 to 10000 bara.Īir - Specific Heat vs. Psychrometric chart for air at barometric pressure 29.921 inches of Mercury and temperature ranging 20 oF to 120 oF.Īir - Specific Heat vs. An air phase diagram included.Īir - Psychrometric Chart for Standard Atmospheric Conditions - Imperial Units Properties of air change along the boiling and condensation curves (temperature and pressure between triple point and critical point conditions). temperature and pressure.Īir - Properties at Gas-Liquid Equilibrium Conditions The moisture holding capacity of air increases with temperature.ĭry air is a mixture of gases where the average molecular weight (or molar mass) can be calculated by adding the weight of each component. temperature.Īir - Moisture Holding Capacity vs. The mass of water vapor present in moist air - to the mass of dry air. Relative humidity in moist air can estimated by measuring the dry and wet bulb temperature. Online calculator, figures and tables with dynamic (absolute) and kinematic viscosity for air at temperatures ranging -100 to 1600☌ (-150 to 2900☏) and at pressures ranging 1 to 10 000 bara (14.5 - 145000 psia) - SI and Imperial Units.Īir - Heating, Cooling, Mixing, Humidifying or Dehumidifying Processesīasic air changing state processes - heating, cooling, mixing, humidifying and dehumidifying by adding steam or water - psychometric diagrams and the Mollier charts.Īir - Humidifying by Adding Steam or WaterĪir can be humidified by adding water or steam.Īir - Humidifying with Steam - Imperial UnitsĮstimate the amount of steam required (lb/h in 100 cfm) in humid air.Īir - Humidity Measurement from Dry and Wet Bulb Temperature The drying force of air depends on the air moisture holding capacity and the water surface to air evaporation capacity. Online calculator, figures and tables showing density, specific weight and thermal expansion coefficients of air at temperatures ranging -100 to 1600 ☌ (-140 to 2900 ☏) at atmospheric and higher pressure - Imperial and SI Units.Īir - Diffusion Coefficients of Gases in Excess of Airĭiffusion coefficients (D 12) for gases in large excess of air at temperatures ranging 0 - 400 ☌. Pressure and TemperaturesĪir density at pressure ranging 1 to 10 000 bara (14.5 - 145000 psi) and constant selected temperatures.Īir - Density, Specific Weight and Thermal Expansion Coefficient vs. Altitudeĭensity and specific volume of air varies with elevation above sea level.Īir - Density vs. This can be seen by using the ideal gas law as an approximation.Absolute humidity is the actual mass of water vapor present in the air water vapor mixture.ĭry air is a mechanical mixture of nitrogen, oxygen, argon and several other gases in minor amounts.Īir - Density and Specific Volume vs. Other things being equal, hotter air is less dense than cooler air and will thus rise through cooler air. Air is a mixture of gases and the calculations always simplify, to a greater or lesser extent, the properties of the mixture. ĭepending on the measuring instruments used, different sets of equations for the calculation of the density of air can be applied. Pure liquid water is 1,000 kg/m 3 (62 lb/cu ft).Īir density is a property used in many branches of science, engineering, and industry, including aeronautics gravimetric analysis the air-conditioning industry atmospheric research and meteorology agricultural engineering (modeling and tracking of Soil-Vegetation-Atmosphere-Transfer (SVAT) models) and the engineering community that deals with compressed air. At 101.325 kPa (abs) and 15 ☌ (59 ☏), air has a density of approximately 1.225 kg/m 3 (0.0765 lb/cu ft), which is about 1⁄ 800 that of water, according to the International Standard Atmosphere (ISA). At 101.325 kPa (abs) and 20 ☌ (68 ☏), air has a density of approximately 1.204 kg/m 3 (0.0752 lb/cu ft), according to the International Standard Atmosphere (ISA). It also changes with variations in atmospheric pressure, temperature and humidity. Air density, like air pressure, decreases with increasing altitude. The density of air or atmospheric density, denoted ρ, is the mass per unit volume of Earth's atmosphere. Mass per unit volume of the Earth's atmosphere
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |