Thermophysical and transport properties of humid air at temperature range between 0 and 100 °C

The aim of the present investigation is evaluation of the thermophysical and transport properties of moist air as a function of mixture temperature with relative humidity as a parameter, ranging between dry air and saturation conditions. Based on a literature review of the most widely available analytical procedures and methods, a number of developed correlations are presented, which are employed with recent gas mixture component properties as input parameters, to derive the temperature and humidity dependence of mixture density, viscosity, specific heat capacity, thermal conductivity, thermal diffusivity and Prandtl number under conditions corresponding to the total barometric pressure of 101.3 kPa. The derived results at an accuracy level suitable for engineering calculations were plotted and compared with adequate accuracy with existing results from previous analytical calculations and measured data from earlier experimental investigations. The saturated mixture properties were also appropriately fitted, and the fitting expressions suitable for computer calculations are also presented.