Experimental research of heat transfer enhancement and thermal stability at pool boiling on porous surfaces.

This work is dedicated to investigation of boiling regimes and transition processes at boiling of nitrogen on the surfaces with porous coatings. Experimental confirmation was received for existence of some typical for boiling on porous surfaces effects, such as, the presence of two regimes of nucleate boiling, non-monotone dependence of critical heat flux of the coating. The mechanism of development of the first and the second crisis of boiling were studied by thermogram methode. The experimental results correspond fully to the percolation model of thickness crisis at boiling on porous surfaces.