EVALUATION OF EFFICIENCY USING WATER EVAPORATION HEAT AT THE FOREST FIRE QUENCHING

The heat transfer model is presented in article. This model allows a numerical evaluation of efficiency using water evaporation heat at the forest fire quenching. Maximum values of volume fraction for liquid, which evaporates from “water shell” at it's driving through the flame, are determined at the result of numerical modeling complex heat transfer processes. The conditions for movement of water through the flames using isothermal and temperature fields are analyzed. The characteristic times of resizing “temperature” traces for “water shells” are determined. It is substantiated that to increase the geometric characteristics of the “temperature” traces appropriate increase of water evaporation area in the “shell” due to its spray. It is shown that the upper bounds for efficiency using water evaporation heat in typical fire is less than 0.1 %. The conclusions about the desirability of improved technologies forest fires from aircraft (primarily by spraying of quenching water) are formulated.