Stack Effect Ventilation in Different Climates

Abstract

The effect of stack ventilation is dependent on the height of the air column and the
temperature difference across the column’s enclosure. So climate is one of the most important factors to induce the stack effect. Outdoor air temperatures vary for each season and each day in different climates. By this fact, the characteristics and force of the stack effect varies in different climates. The fundamental equation from ASHRAE (2017) is used for the calculations for the airflow rates caused by stack effect. For this study, comparisons are made among different climates in USA to analyze the impact of different times of day within each climate determined the effect of time and season, proposes to compare the different results for the whole year, which gave a basic understanding of the stack effect of those climates in different seasons. The results show that the airflow rate caused by stack effect is high in winter and low in summer. Also, it is high in the nighttime and low during
the daytime in all climates. This study introduces basic understanding of the stack effect ventilation which is useful for designer before applying to buildings, practically.