STUDY OF THE HEAT EXCHANGE PROCESS IN A COOLING VEST DURING EMERGENCY LIQUIDATION

Abstract

The article is devoted to the study of the process of heat exchange in a cooling
vest during the liquidation of emergency situations under conditions of ergothermic
loads.
In the conditions of martial law, during emergency rescue operations by the units
of the State Emergency Service of the Ministry of Internal Affairs of Ukraine, as a result
of rocket and bomb attacks, extreme microclimatic conditions arise (high temperature,
high and low humidity, air movement speed, gas pollution, dense smoke).
Carrying out emergency and rescue work on fires and liquidation of accidents
requires the personnel of the Operational and Rescue Service of the Emergency
Situations of Emergency Situations to respond quickly to emergency situations, make
effective technical decisions, high professionalism and is associated with high physical
and psychoemotional stress on the body of the firefighter-rescuer [1].
The most effective measure aimed at preserving the health and life of workers in
these conditions is the use of methods and means of individual heat protection, which is
the subject of this article, which is prepared on the basis of the results of scientific
research on fire safety, occupational safety of firefighter-rescuers, mining rescuers.
According to the "Rules of occupational safety in bodies and units of the
Ministry of Emergency Situations of Ukraine and in matters of public protection from
the consequences of the Chernobyl disaster" and "Rules of safety in coal mines" in
mines where people are constantly (during the shift), the permissible air temperature
should not exceed 26℃ [2, 3].
The article examines the results of experimental studies of energy consumption
and the thermal state of the body of firefighters in a cooling vest.
The main components of the heat balance, on which the duration of the
firefighter's work depends, are the internal energy produced by her body - the body's
heat production, which in turn depends on the amount of energy consumption, and
external energy that penetrates from the outside.
At the same time, external energy is, as a rule, a factor independent of a person,
and internal energy depends on many parameters.