NON-ISOTHERMAL TWO-PHASE FREE JET WITH HIGH POWER OF HEAT ABSORPTION

Abstract

The paper presents the theoretical and experimental aspects concerning the use of two-phase jet for the flames extinguish. In the first part of the work are displayed the theoretical basis which determined the experimental bench conception. Consequently, the particularities of the droplet evaporation processes from the liquid jet, sprayed in an air vapour mixture, are shown. The experiment provides that the liquid phase in contact with the flame evaporates instantaneously. By the huge volume expansion, the oxygen concentration in the mixture falls under the ignition limit, and the temperature decreases due to the heat absorption. The proposed system may be use in the fire extinguish equipment.