OFFICE SPACE AIR MONITORING SYSTEM

The article describes the air monitoring system of office premises designed to assess air quality. The urgency of the task of creating air quality monitoring systems is due to the fact that the air environment contaminated with harmful chemicals can have a negative impact on humans.

The developed system includes information-measuring and information-analytical blocks that meet certain requirements, such as sensitivity, selectivity, speed and compactness. The main task of the information and measurement module is the detection and identification of harmful chemicals. The purpose of the information and measurement module is to determine concentration, velocity and temperature fields at any time at any point in the room.

The approbation of the developed system was carried out on the basis of experimental studies. Butyl acetate was selected as a contaminant. The source of the contamination was located near the ventilation system. Modeling of the spread of pollutants in the room is performed in the Solidworks 2020 software package. The distribution of butyl acetate concentration in an office space at the level of the human respiration layer is obtained, taking into account the location of the source of pollution and the workplace, as well as taking into account the time of year. The values of butyl acetate concentration at various points of time at the employee's workplace were determined.

The simulation results showed that in the summer, due to a slight difference in outdoor and indoor air temperatures, the concentration of butyl acetate at the employee's workplace reaches the maximum permissible values much faster than in winter.

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