EXPERIMENTAL STUDY OF OVERPRESSURE IN THE PROTECTED ROOM DURING OPERATION OF THE SMOKE EXTRACTION BACKUP SYSTEM IN VARIOUS MODES
DOI:
https://doi.org/10.20397/2177-6652/2024.v24i2.2766Resumo
The purpose of the article was to determine the critical parameter engineers should prioritize during the design of smoke ventilation projects to ensure evacuation safety within protected rooms – specifically, whether overpressure or flow rate (speed) in the opening of the evacuation door is more important. Utilizing a specially designed experimental setup that replicates a building's vestibule-gateway, the research methodically explored the effects of different variables including fan operation, door states, and the presence of overpressure valves on the system's efficacy. Results revealed that door closers significantly impact the force needed for door opening, highlighting a gap in current safety standards. Furthermore, the variability in overpressure valves performance suggested a need for nuanced regulatory guidelines. The study emphasizes the critical role of overpressure valves in maintaining safe evacuation routes and advocates for updated regulatory standards that consider the findings, aiming to enhance the safety and effectiveness of smoke ventilation systems during emergencies
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