Experimental study on night ventilation for university student dormitories in Chongqing

Taking seven rooms with the same layout as the example, carries out experimental studies on night ventilation. Studies the cooling effect of the night ventilation on student dormitories under different conditions including weather, building orientation, open degree of balcony door and control scheme. The results show that indoor temperature drops at night can reach up to 0.5 ℃ in rainy day and 0.6 ℃ in sunny days. Increasing air change rate and ventilation time is effective measure to improve the night ventilation efficiency. Night ventilation should be vigorously promoted in rainy summer in Chongqing. Besides, the reasonable operation of air conditioning system combined with night ventilation is conducive to building energy efficiency.