FIRE AND INDUSTRIAL SAFETY (CIVIL ENGINEERING) COOLING OF A MASSIVE BODY BY HEATPROOF GEL-FORMING COMPOSITION

Statement of the problem. For the protection of building structures during fires from its thermal impact it is proposed gel-forming systems are used, which ensure the application of the protected surfaces resistant layer of the gel. The objective of the research is to study the dynamics of cooling of a massive body with a layer of the gel. Results. A mathematical model describing the dynamics of a cooling structure to be protected is designed. For this, the process of cooling of a massive body is broken into two consecutive stages: 1) warm-up of the wet gel to the boiling temperature, with the subsequent "boiling" of the liquid phase of the gel; 2) cooling of a massive body with a tap of the heat into the environment through the heat-insulating layer of the formed dry gel. The formula was obtained for calculating the temperature of the surface to be cooled after formation of a layer of the wet gel on it. Conclusions. The effectiveness of this mechanism was identified as well as cooling advantages of this method of cooling compared with the cooling by water.