空调间歇运行模式下建筑内墙热响应特性研究

Research on thermal response characteristics of building interior wall under intermittent operation mode of air conditioning

空调间歇运行模式是夏热冬冷及夏热冬暖地区的典型运行模式,在空调间歇运行模式下,建筑内墙的热工性能对建筑能耗有较大影响。综合采用实验对比及数值计算方式对空调开机后建筑内墙(匀质墙体、饰面墙体)的热响应特性进行了研究。结果表明:在常规的空调间歇模式下,空调开机后的4~6 h内,建筑内墙主要处于蓄能状态,而非传递到邻室;在空调开机后的前4 h内,当饰面材料的导热系数及体积比热容分别小于建筑基墙时,本室侧的壁面热流可分别降低17.0%~22.3%及8.8%~14.1%。

Intermittent operation mode of air conditioning is a typical operation mode in hot summer and cold winter and hot summer and warm winter areas. Under the intermittent operation mode of air conditioning,the thermal performance of building interior wall has a great impact on building energy consumption. The thermal response characteristics of building interior walls(homogeneous wall,decorated walls) after air conditioning is turned on,are studied by means of experimental comparison and numerical calculation. The results show that in the conventional intermittent mode,the interior wall of the building is mainly in the state of energy storage within 4~6 hours after the air conditioner is turned on,rather than transferring to the adjacent room;when the thermal conductivity and volume specific heat capacity of the facing material are less than the base wall,the surface heat flow of the interior wall can be reduced by 17.0%~22.3% and 8.8%~14.1% respectively within the first 4 hours after the air conditioner is turned on.