Natural ventilation in buildings with concave elements (H and C)
A review
DOI:
https://doi.org/10.46421/entac.v20i1.5720Keywords:
Natural ventilation, Air quality, Concave geometry, “H” floor-plan, “C” floor-planAbstract
Concave elements in floor plan are common in architecture; their larger perimeter, allows more openings to the outside. “C” and “H” shaped buildings are examples of design with concave elements, the second being the most recurrent in Brazil and widely used for multifamily social housing. However, many of them do not have good natural ventilation, which is a recommended strategy to improve thermal comfort and air quality in hot climates. In this regard, it was conducted a systematic review of the literature on natural ventilation of buildings with concave bay (“H” and “C”) to understand the behavior of wind flow around these buildings and the impact of their shape on ventilation. In syntheses, results indicate that the “C” shape was less efficient than a rectangular in removing pollutants. It is recommended to design low-rise windward. Finally, it was identified that dense neighborhoods composed of "H" shaped buildings have greater wind resistance, causing a decrease in the leeward ventilation in those buildings.
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