Ventilation                                                                                                                                                                                                                                                                               There are two ways in which ventilation might be positively used in this kind of hot climates: reducing air exchanges and infiltrations with external air when the outside temperature is high and encourage this exchange during the few colder nights. In order to avoid air leakages and infiltrations, it is fundamental to pay much attention to the design of openings, not only reducing their area but also properly designing the connections between opaque and transparent parts of the envelope.