The integration of phase-change materials (PCM) into building enclosures can effectively improve the thermal performance of buildings. In this study, a novel phase-change wall of a wood structure with embedded capillaries that can utilize sky-radiation cooling is proposed to reduce energy consumption. The performance of the proposed wall was experimentally investigated and compared to that of an ordinary wood-structured wall under summer conditions. The results show that the proposed wall can significantly reduce the internal temperature of the wallboard and indoor air temperature. Compared with a traditional room with ordinary wood structure walls, the room using the PCM wallboard results in a more stable temperature fluctuation. Furthermore, the load from the east-oriented wall was reduced by 15.63%, the optimum decrement factor was 0.44, and the intensity of thermal discomfort was reduced in all directions. Therefore, the proposed wall has great application potential for reducing energy consumption and improving thermal comfort.

中文翻译：

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天空辐射冷却耦合新型木结构相变墙体性能分析

将相变材料（PCM）集成到建筑围护结构中可以有效提高建筑物的热性能。在这项研究中，提出了一种新型木结构相变墙，该墙具有嵌入式毛细管，可以利用天空辐射冷却来降低能耗。对所提出的墙的性能进行了实验研究，并与夏季条件下的普通木结构墙进行了比较。结果表明，所提出的墙体可以显着降低墙板内部温度和室内空气温度。与传统的普通木结构墙体房间相比，使用PCM墙板的房间温度波动更加稳定。此外，东向墙体荷载减少了15.63%，最佳减量系数为0.44，各个方向的热不适强度均有所降低。因此，所提出的墙在降低能耗和提高热舒适度方面具有巨大的应用潜力。