複合相變混凝土牆板之熱學性質與應用於台灣氣候條件之研究

The Study of Thermal Properties of Concrete Wallboard Containing Phase Change Materials and Its Applications for Taiwan's Climate Conditions

楊泓斌(Hong-Bin Yang) ； 劉楨業(Tony C. Liu) ； 陳振川(Jenn-Chuan Chern) ； 陳柏寰(Po-Huan Chen) ； 羅宜筠(Yi-Yub Lo)

《中國土木水利工程學刊》 26卷4期 (2014/12) Pp. 281-291

https://doi.org/10.6652/JoCICHE.201412_26(4).0002

摘要

相變材料是一種於特定溫度區間改變其物理狀態的材料，藉潛熱於相變化時吸放出大量熱能。近期研究發現，混凝土中加入相變材料，可改善建築外殼熱學性能進而達到節能減碳效果。本研究以相變材料取代混凝土體積10%、20%、30%的方式，討論相變混凝土的熱學性質。研究發現相變材料取代量越高，熱擴散係數下降、熱容量增加、熱傳導係數降低。另外，以2012年台北市夏季、冬季氣候條件進行熱貫流試驗，模擬相變混凝土對室內溫度造成的影響。夏季時隨著牆板中的相變材料添加量增加，可降低與延遲室內的溫度峰值；冬季時添加量增加，低溫溫度有上升的情形。相變材料應用於台灣氣候條件將可更有效率地提升室內的舒適度，並在夏季降低空調與電力的使用。

關鍵字

相變材料 ； 潛熱 ； 複合牆板 ； 熱貫流儀器

並列摘要

Phase-change material (PCM) is a relatively new material that has the ability of changing its physical phase under specific temperature range. Because of its large latent heat capacity, PCM absorbs or releases large amount of heat energy as it changes its physical phase. Recent research has found that the unique property of concrete containing PCM can improve thermal behavior of a building envelop resulting in energy saving and carbon reduction. This paper presents the results of laboratory studies of thermal properties (i.e., thermal diffusivity, heat capacity, and thermal conductivity) of concrete containing PCM in three different volume replacement rates (10%, 20% and 30%) Test results indicated that increase in replacement rate of PCM resulted in lower thermal diffusivity, higher heat capacity, and lower thermal conductivity. The thermal behavior of concrete wallboard containing PCM under selected temperature ranges of summer and winter months of 2012 in Taipei was investigated using a special hot box testing apparatus. Test results showed that by increasing the PCM contents in the concrete wallboard, the peak indoor temperature in the summer was reduced and peak temperature occurrence was delayed and in the winter the peak indoor temperature was higher than the ambient temperature. Concrete wallboard containing PCM efficiently creates more comfortable indoor environment and reduces the usage of air conditioner and electricity in the summer months in Taiwan.

並列關鍵字

Phase change material ； Latent heat ； Composite wall ； Hot box test