For PCM utilization in building component, energy storage structure is expected to improve the ability to extract heat from heat source and dissipate heat to the room at the same time. This paper presents a ring-shaped energy storage structure with combination of an outer casing pipe and an inner coil pipe in heating terminal. To better understand thermal performance and integration strategy of the terminal, effects of thermal parameters of PCM and structural parameters of casing pipe are analysed by numerical model. Root mean square deviation (RMSD) are 0.3% and 2.1% with experiments conducted to validate numerical model. Compared with conventional PCM and traditional heating terminal, casing tube PCM heating terminal have highest stability coefficient index at 0.983, which shows its thermal constancy and comfort level. Results show both thermal conductivity and heat of fusion of PCM have lifting limit at 0.2 W/m²·K and 350 J/g for enhancing the heating terminal thermal performance. PCM melting temperature have matching point at 293 K for high concrete layer surface average temperature and low temperature amplitude. Changing the ratio of casing and coil pipe diameter from 1.5 to 2 could reduce 12.3 K temperature fluctuation on floor surface. The above research provides a heating terminal which can simultaneously enhance heat absorption from heat source and emission to indoor room, while a basic reference for the terminal design and selection is investigated.

对于PCM在建筑构件中的应用，储能结构有望提高从热源提取热量的同时向房间散热的能力。本文提出了一种由外套管和内盘管组合的供热终端环形储能结构。为更好地了解终端的热性能和集成策略，通过数值模型分析了PCM热参数和套管结构参数的影响。均方根偏差 (RMSD) 为 0.3% 和 2.1%，并进行了实验以验证数值模型。与传统PCM和传统加热端子相比，套管PCM加热端子稳定性系数指数最高，为0.983，显示了其热稳定性和舒适度。² ·K 和 350 J/g 用于提高加热终端热性能。对于高混凝土层表面平均温度和低温度幅值，PCM 熔化温度在 293 K 具有匹配点。将套管与盘管直径的比值从1.5改为2，可以减少地面12.3 K的温度波动。以上研究提供了一种可以同时增强热源吸热和向室内排放的采暖终端，并为终端设计和选择提供了基本参考。