THERMAL CONDUCTIVITY OF A SILICA GEL + CALCIUM CHLORIDE SYSTEM:
THE EFFECT OF ADSORBED WATER
Yu. Yu. Tanashev and Yu. I. Aristov

UDC 536.24

The effective thermal conductivity of a KSK porous 
silica gel + calcium chloride composite is measured at T = 293 K 
using the hot-wire method, and the effect of the quantity 
w of sorbed water on it is studied. It is shown that the w-dependence 
of the thermal conductivity  is determined by the degree 
of filling of the matrix pores with a salt + water system and 
by the phase transitions in this system. The value of  
increases with a filling increase, this occurring most sharply when 
a continuous phase of the aqueous solution of salt is formed inside 
the sorbent layer. The results obtained are adequately described by 
the Luikov-Bjurstrom model.

JEPTER74920200018
JEPTER7492018