西安地区办公建筑夜间通风降温实验研究

Experimental study on night ventilation cooling in office buildings in Xi'an area

以西安地区某栋办公建筑为例,通过实验测试,研究了蓄热体质量和蓄热体布置方式对夜间通风效果的影响,从房间室内温度波动和蓄冷量两个方面对夜间通风效果进行了评价。结果表明：在西安地区的夏季,当室外昼夜温差达到6℃以上时,对办公建筑进行夜间通风才有降温效果;蓄热体分散布置相比集中布置,可以增加40%~66%的蓄冷量,蓄热体的质量越小,分散布置的蓄冷优势越明显。

Taking an office building as an example, studies the influence of amount and layout of thermal mass on the night ventilation effect by experimental testing. Evaluates the effect of night ventilation in terms of indoor temperature fluctuation and cool storage capacity. The results show that when the temperature difference between day and night is up to 6℃ or above in Xi＇an area in summer, night ventilation for office buildings would have cooling effect. The cool storage capacity can increase by 40% to 66% with scattered arrangement of the thermal mass comPared to that of centralized arrangement. The smaller the amount of thermal mass is, the more obvious the superiority of scattered arrangement is.