A physical model of ventilation of a fitness hall has been developed under conditions of varying visitor load and intensity of physical exercise. The ventilation rate of a fitness room and required amount of supply ventilation air when forming comfortable microclimate in a room under conditions of different intensity of physical exercises were determined. The results of experimental and theoretical studies of dependence of multiplicity of supply and exhaust ventilation depending on the number of visitors to the fitness hall, taking into account intensity of their physical activity and the value of internal air temperature are presented. The method of determining the volumetric and mass flow rate of supply ventilation air and the ventilation rate depending on temperature of the indoor air, carbon dioxide concentration, atmospheric pressure, number of visitors, their gender, age and intensity of physical exercises has been improved.
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