Estudo de viabilidade da utilização de torres de vento para melhoria da ventilação natural em ambientes

Abstract

Natural ventilation is one of the most suitable strategies for passive cooling of buildings and for maintaining air quality. One way to utilize natural ventilation is through wind towers, a system widely used in Middle Eastern and North African countries. These are structures located at the top of buildings that capture incoming wind and lead to the inside. In Brazil, where a hot and humid climate predominates, air velocity rates are favorable for using this system to improve thermal comfort. This study aims to make the use of wind towers feasible for residential buildings in Jataí city. For this purpose, computational simulations were carried out using the Ansys Fluent software, allowing the study of the technical characteristics of the analyzed towers and their effects on indoor ventilation. Simulations were conducted for three types of wind towers: unidirectional (with one opening), bidirectional (with two openings), and tetradirectional (with four openings). After analyzing the data, the tetradirectional tower achieved the best results, as it captures wind from all directions. The results demonstrate a great potential for using this strategy in regions with hot and humid climates.