Abstract
The energogrammes and velocity curves of silicagel KCK-2 sample drying in strong non-uniform electric fields, including the fields of crown and spark discharge are shown. Equation of drying process heat balance in the conditions of inner and external heat sources (electric heater and gas discharge) presence and the equation for specific heat evaporation of free and combined water determination are adduced. The mech- anism of physical processes directed to decreasing of phase transition with isothermal drying of capillary porous sample in crown and spark discharge is offered. This process is confirmed by the experiment on the electrocalorimetric plant.