VENTILATION IMPROVEMENT IN FIRE SMOKE CONTROL

Thermal gradients, wind pressure and mechanical ventilation systems determine a natural airflow travelling the two atmospheres. A fire ignition in a confined space increases thermal gradients and determines a growing smoke flux towards adjacent atmospheres. A free air jet from an air curtain system reduces the exchange airflow and improves fire and smoke compartimentation. Two theoretical analyses are used for the air curtain device dimensioning in emergency conditions. The results provide guidelines to improve the project quality