SIMPLE KELVIN EqUATION APPLICABLE IN THE CRITICAL POINT VICINITY

sat p are the saturated vapor pressures against a plain surface and a meniscus with effective curvature radius r, respectively, the latter accounting for such effects as the adsorption at the pore wall. Number “2” stays for spherical geometry of the meniscus. It should be replaced by “1” in the case of the cylindrical geometry. μ is the molar mass of the substance in use, ρL is the liquid phase density, R is the universal gas constant. quite often, this equation is misused when applied to high-presser gases and to liquids at near-critical temperatures. To account for the gas’s nonideality, another equation [3] was developed: