Natural ventilation through windows and other openings in the building envelope is still the most common way to ensure the necessary fresh air supply in buildings. To date, there are few validated models for the calculation of ventilation rates through large openings. In particular, there is a lack of information about natural cross-ventilation. On the basis of an empirical study a mathematical...

BACKGROUND Transmission of drug susceptible and drug resistant TB occurs in health care facilities, and community and households settings, particularly in highly prevalent TB and HIV areas. There is a paucity of data regarding factors that may affect TB transmission risk in household settings. We evaluated air exchange and the impact of natural ventilation on estimated TB transmission risk in t...

For centuries, dome roofs were used in traditional houses in hot regions such as the Middle East and Mediterranean basin due to its thermal advantages, structural benefits and availability of construction materials. This article presents the computational modelling of the windand buoyancy-induced ventilation in a geodesic dome building in a hot climate. The airflow and temperature distributions...

washers, fans and other devices may be required. This kind of setup is typically a requisite for the warm air in the summer to create a comfortable environment for the passengers. The last type of ventilation is in the case of an emergency, like the times the train is caught in fire. This kind of situation requires larger amounts of ventilation, which needs to be provided by mechanical means. F...