Window and roof configurations for comfort ventilation

Abstract

This paper assesses the applicability of some architectural design elements to provide comfort ventilation in humid tropical regions: size and location of windows, building eaves and roof shapes for a single unit house. Most window and roof con gurations are suf cent to produce only a slightly more comfortable level although they can certainly increase the indoor air velocity. The improvement of indoor air velocity can minimize the physiological effect of the high humidity. Among the tested models, the room with a high gable roof combining with eaves improves signi cantly the indoor air velocity.Cet exposé évalue l'applicabilité de certains é lé ments de con guration visant à assurer une ventilation de confort daus les ré gions tropicales humides: dimensions et emplacement des fenêtres, formes d'avant-toit et de toiture pour une maison individuelle. La plupart des con gurations de fenêtre et de toiture suf sent seulement à fournir un minime supplé ment de confort, bien qu'elles puissent effectivement amé liorer la circulation inté rieure de l'air. Une amé lioration de circulation intérieure de l'air peut atté nuer les effets physiologiques d'une forte humidité. Parmi les modèles essayé s, le local comportant une toiture à pignon é levé associé e à des avant-toits offre une nette amé lioration de circulation inté rieure de l'air.

CFD analysis of cross-ventilation of a generic isolated building with asymmetric opening positions: Impact of roof angle and opening location

“…Less studies focused on buildings with a flat roof and with asymmetric opening positions located in the facade (group 2); some examples are [23,[25][26][27]. Several studies analyzed the influence of the roof shape but with symmetric opening positions (in terms of height in the facade; group 3) [31][32][33][34][35][36]. Finally, quite some studies focused on buildings with a pitched roof and asymmetric opening positions (group 4) (e.g.…”

Impact of eaves on cross-ventilation of a generic isolated leeward sawtooth roof building: Windward eaves, leeward eaves and eaves inclination

“…Refs. [14,15]). Kindangen [14,15] performed Computational Fluid Dynamics (CFD) simulations and observed that in buildings with symmetric opening locations (inlet and outlet openings located at the same height) the use of eaves can increase the cross-ventilation flow rate.…”

Enhanced Single-Sided Ventilation with Overhang in Buildings

“…Typical building façades include a venturi-shaped roof [13], wind catchers [9,[14][15][16], a ventilation shaft [17], wing walls [8], a balcony [7,10,11,18], and eaves [5,6,21]. Prajosan and Sharples [17] proposed a ventilation shaft system to increase the indoor air velocity and thermal comfort in a single-sided residential unit.…”

“…Many researchers have utilized the aerodynamic potential of building façades to investigate their enhancement effect on indoor and outdoor airflow exchanges for both cross and single-sided ventilation buildings [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Typical building façades include a venturi-shaped roof [13], wind catchers [9,[14][15][16], a ventilation shaft [17], wing walls [8], a balcony [7,10,11,18], and eaves [5,6,21].…”