Dynamic heat storage and cooling capacity of a concrete deck with PCM and thermally activated building system
Dynamic heat storage and cooling capacity of a concrete deck with PCM and thermally activated building system
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DOI：
10.1016/j.enbuild.2012.07.007
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发表时间：
2012-10
影响因子：
6.7
通讯作者：
M. Pomianowski;P. Heiselberg;R. L. Jensen
中科院分区：
文献类型：
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作者：
M. Pomianowski;P. Heiselberg;R. L. Jensen
本文提出了一种蓄热和冷却概念，该概念利用相变材料（PCM）和在空心混凝土板中实施的热激活建筑系统（TABS）。提出了带有和不带有微胶囊 PCM 的空心混凝土桥面板元件的动态蓄热能力的数值计算。新型微胶囊 PCM 混凝土桥面板是标准桥面板，在其上添加了额外的 PCM 混凝土层，同时在结构中引入了潜热存储。使用 PCM 混凝土对新桥面板的性能进行数值模拟的挑战是这种新材料的热性能，因为 PCM 混凝土尚未得到很好的定义。本文提出的结果包括首先从理论上计算 PCM 混凝土材料特性（例如导热率和比热容）的模型，然后用实验确定的 PCM 混凝土热特性更新模型。然后，对具有理论和实验确定的热性能的板的蓄热性能进行了相互比较。最后，文章中提出的结果强调了在预制混凝土桥面元件中使用 TABS 和 PCM 的潜力。
This paper presents a heat storage and cooling concept that utilizes a phase change material (PCM) and a thermally activated building system (TABS) implemented in a hollow core concrete deck. Numerical calculations of the dynamic heat storage capacity of the hollow core concrete deck element with and without microencapsulated PCM are presented. The new concrete deck with microencapsulated PCM is the standard deck on which an additional layer of the PCM concrete was added and, at the same time, the latent heat storage was introduced to the construction. The challenge of numerically simulating the performance of the new deck with PCM concrete is the thermal properties of such a new material, as the PCM concrete is yet to be well defined. The results presented in the paper include models in which the PCM concrete material properties, such as thermal conductivity, and specific heat capacity were first calculated theoretically and subsequently the models were updated with the experimentally determined thermal properties of the PCM concrete. Then, the heat storage of the decks with theoretically and experimentally determined thermal properties were compared with each other. Finally, the results presented in the article highlight the potential of using TABS and PCM in a prefabricated concrete deck element.