Influence of electrical fields to process of transposition of heat in humid macroporous solid

摘要

On an example of quartz sand - model macroporous solid by experimental way is shown, that constant inhomogeneous electrical fields essentially intensity the process of transposition of heat in a broad interval of moisturecontents, including hygroscopic and humid condition. Experimental dependence of effective thermal conductivity coefficient from moisturecontents λ{sub}(ЗФ)(U) of sand obtained with the help of upgraded classical installation created by Babiev with average temperature on a sample 305 K is determined by a porous structure of a sample, form of connection and condition of an absorbed moisture. The different magnitudes λ{sub}(ЗФ) for characteristic moisturecontents of sand are explained proceeding from possible mechanisms of movement of an absorbed moisture in conditions of a joint operation of an absorbed moisture in conditions of a joint operation of gradients moisture, temperature and electrical fields.