Case study of wind-induced natural ventilation tower in hot and humid climatic conditions

Abstract

This paper investigates the performance of a wind-induced natural ventilation tower through an empirical analysis in hot and humid climatic conditions. There are mainly two methods for inducing natural ventilation; namely stack ventilation and wind-induced ventilation. Due to the relatively lower difference between the indoor and outdoor temperature in hot and humid conditions, stack ventilation method alone is rendered insufficient to create desirable air flow between outdoor and indoor building environment to achieve comfort and indoor air quality for the building occupant. Hence, wind-induced ventilation method can be used to achieve the desired air flow rates and improve the indoor air quality for the building. This study revealed that at external wind speed of 0.1m/s, the aerodynamic inverted airfoil roof geometry on the wind-induced natural ventilation tower is able to generate extraction air flow rate of 10,000m3/h with average of 57 ACH to provide comfort and indoor air quality to the internal building environment in hot and humid climatic conditions.