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The processes of vaporization in porous structures, working with the excess   of liquid are investigated. With regard to the thermal power plants new   porous cooling system is proposed and investigated, in which the supply of   coolant is conducted by the combined action of gravity and capillary forces.   The cooling surface is made of stainless steel, brass, copper, bronze,   nickel, alundum and glass, with wall thickness of (0.05-2)•10-3 m.   Visualizations of the processes of vaporization were carried out using   holographic interferometry with the laser system and high speed camera. The   operating conditions of the experiments were: water pressures (0.01-10) MPa,   the temperature difference of sub-cooling (0-20)°C, an excess of liquid   (1-14) of the steam flow, the heat load (1-60)•104 W/m2, the temperature   difference (1-60)°C and orientation of the system (± 0 - ± 90) degrees.   Studies have revealed three areas of liquid vaporization process   (transitional, developed and crisis). The impact of operating and design   parameters on the integrated and thermal hydraulic characteristics was   defined. The optimum (minimum) flow rate of cooling fluid and the most   effective type of mesh porous structure were also defined

The processes of vaporization in the porous structures working with the excess of liquid