Additional Roof Ventilation to Produce a Stack Effect in Ume Kbubu, the Traditional House of the Atoni Tribe

Abstract

Indoor air quality affects the health of building users so that every building needs ventilation. The ume kbubu building was built without using ventilation to get warm temperatures in the building but the air quality inside is highly contaminated with carbon dioxide. The addition of roof ventilation is expected to produce a stack effect phenomenon in ume kbubu. The purpose of this research is to measure the level of carbon dioxide in ume kbubu and the speed at which smoke moves out of the building. The method used in this research is computer simulation using CFD software to determine the effectiveness of adding roof ventilation in reducing carbon dioxide levels and simulation without a computer using mock-ups to see the movement of smoke in ume kbubu. The results of this study indicate that the effectiveness of roof ventilation reaches 60% so that the air quality in the ume kbubu room is safer for its users.