To manage the temperature of air flow in absence of sun, storage tank can be utilized in building. In current modeling a duct has been employed with considering PCM in outer layer. Inner zone is passage of cold air and its inlet temperature is lower than 28 °C. To augment thermal behavior, nano powders was added in to RT28 and inclusion of CuO reduces the time about 6.94% when a = 10. At night the cold air of ambient enters the duct and discharging of PCM makes it warmer. The difference of temperature between outlet and inlet air declines as solidification occurs and minimum value occurs at end of process. Utilizing greater “a” provides higher rate of solidification and temperature reduces with augment of this parameter. As amplitude of new configuration of duct augments from 0 to 10, time of solidification shorten about 22.74%. Also, as a alters from 5 to 10, needed time decreases from 2498.4 min to 2170.8 min. Switching from flat style to a = 5 has lower influence than changing from a = 5 to 10. At t = 35 h, augmenting “a” from 0 to 10, makes the temperature of PCM to decline about 0.18%. Rise of time from 5 to 35 h, augment of T_PCM about 1.14% when a = 10 mm.

为了在没有阳光的情况下控制气流的温度，可以在建筑物中使用储罐。在当前的建模中，考虑到外层中的PCM已采用了管道。内部区域是冷空气的通道，其入口温度低于28°C。为了增强热性能，将纳米粉末添加到RT28中，当a = 10时，包含CuO可以将时间减少约6.94％。晚上，周围的冷空气进入管道，而PCM的排放使之变暖。随着固化的发生，出风口和进风口之间的温度差会减小，并且在过程结束时会出现最小值。使用更大的“ a”可提供更高的凝固速率，并且随着该参数的增加温度会降低。随着新管道结构的振幅从0增加到10，凝固时间缩短了约22.74％。也，从5更改为10，所需时间从2498.4分钟减少到2170.8分钟。从平面样式切换为a = 5的影响要小于从a = 5变为10的影响。t  = 35 h，将“ a”从0增加到10，使PCM的温度下降了约0.18％。时间从5小时增加到35小时，当a = 10 mm时，T _PCM增加约1.14％。