Non-Isothermal Desorption of Thin Layers of Aqueous Salt Solutions

Abstract

Abstract. Nonisothermal desorption of the aqueous salt solutions layers on the horizontal heating surface was experimentally investigated. Water solutions of NaCl, CaCl 2 , LiВr, LiCl were used. Surface temperature was T w =80 °С. After warming, the desorption rate for salt solutions continuously decreases with increasing time. Evaporation rate of distillate is constant for a long time period. There is a significant growth of the rate at the end of the evaporation, when the film thickness becomes substantially less than 1 mm. Desorber of absorption heat pump can operate without failure when there is a small local (partial) crystallization.