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Physical properties of airback to main menu
properties listed below:
To calculate relative humidity from dry-bulb and wet-bulb temperatures,
viscosity of air (online calculator) [top] The viscosity of air, as a function of temperature, is well described by the following empirical equation, with air temperature T in Celcius [oC] and viscosity in Pascal-seconds [Pa.s]: Error: <0.1x10-6 Pa.s; validity range: 0-54oC. [Source: parabolic fit on values from CRC Handbook, 1986; Weast (Ed.); page F-42] density of humid air (online calculator) [top] The density of humid air, as a function of temperature, barometric pressure and partial vapour pressure, is well described by the following empirical equation: T: absolute temperature [K]; B: barometric pressure [Pa]; pv: partial pressure of water vapour [Pa]; density in [kg/m3]. NB: saturated vapour pressures can be found here. [Adapted from: CRC Handbook, 1986; Weast (Ed.); page F-8] |
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