Improvement of the Chimney Effect in Stack Ventilation

The article is focused on the airflow in a ventilation system building. work examines methods which enhance chimney effect. In this paper, three cases with different chimneys were analyzed for full-scale experiment. These characterized by geometrical and material parameters, leading to differences intensity of airflow. common denominator was room air inlet outlet system. between experimental concerned canal itself, more precisely its part protruding above roof slope. first case made traditional way, from solid ceramic brick. second that led out slope transparent barrier, called solar chimney. third case, rotary type cap installed improve efficiency stack ventilation. All these used determine performance natural ventilation—Air Change per Hour (CH). Additionally, paper presents technical economic comparison solutions used.