Parametric analysis of influencing factors in Phase Change Material Wallboard (PCMW)
Parametric analysis of influencing factors in Phase Change Material Wallboard (PCMW)
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DOI：
10.1016/j.apenergy.2013.12.059
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发表时间：
2014-04
期刊：
影响因子：
11.2
通讯作者：
Dan Zhou;G. Shire;Yuan Tian
中科院分区：
文献类型：
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作者：
Dan Zhou;G. Shire;Yuan Tian
将相变材料（PCM）引入传统建筑结构中被认为是减少能源供需之间不匹配的有效方法，从而最大限度地减少能源消耗（冷却/加热能量）。对于建筑应用，相变材料墙板（PCMW）由于其易于安装到现有建筑物进行翻新而特别感兴趣。本文研究了内、外两种结构的相变材料壁，并通过数值模拟研究了相变材料的热物性对其热性能的影响。这些影响因素包括熔化温度、熔化范围、潜热、导热系数和表面传热系数。采用有效热容模型来考虑潜热，并通过实验对模型进行了验证。内表面温度和昼夜能量储存被选为评价标准时，比较不同的PCMW的热性能。通过分析各影响因素对系统热工性能的影响，为节能建筑中相变材料的选择提供了有益的指导。
Incorporating Phase Change Materials (PCMs) into traditional building structures has been considered as an effective way to reduce the mismatch between energy supply and demand and in turn to minimise energy consumption (cooling/heating energy). For building applications, Phase Change Material Wallboards (PCMWs) are of particular interest due to their easy installation to existing buildings for refurbishment. Both interior and exterior PCMWs are investigated in this paper, with a numerical study examining the effects of wallboard thermal properties on its thermal performance. These influencing factors include melting temperature, melting range, latent heat, thermal conductivity and surface heat transfer coefficient. An effective heat capacity model is adopted to consider latent heat with the model validated by an experiment. Inner surface temperature and diurnal energy storage are chosen as the evaluation criteria when comparing the thermal performance between different PCMWs. By analysing the effects of influencing factors on the system thermal performance, this study serves as a useful guide for selection of PCMs in energy-efficient buildings.