DSC test error of phase change material (PCM) and its influence on the simulation of the PCM floor
DSC test error of phase change material (PCM) and its influence on the simulation of the PCM floor
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DOI：
10.1016/j.renene.2015.07.085
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发表时间：
2016-03-01
期刊：
影响因子：
8.7
通讯作者：
Cao, Chihong
中科院分区：
文献类型：
--
作者：
Feng, Guohui;Huang, Kailiang;Cao, Chihong
相变材料的可靠参数是相变地板设计和模拟的基础，相变地板可有效地应用于非连续能源供暖系统。本文总结了一种典型的相变材料（癸酸）的相变潜热、固相线温度和液相线温度的差示扫描量热法（DSC）测试结果。发现对于相同的PCM，结果是显著不一致的。然后，我们安排了DSC测试与不同的程序对癸酸和使用所获得的参数在PCM地板，这已经报道了详细的实验结果，在我们以前的研究模拟。其目的是提出可靠的潜热，固相线温度和液体温度的这种常见的PCM和评估的影响，误解的制冷能力功能的模拟的PCM地板的热存储和释放效果。由于实验安排不当，对相变材料相变范围的测量误差在33%~ 883%之间.在模拟的情况下，观察到地板表面温度的最大差异为20%。这意味着在PCM系统设计相关的仿真中，设置标准DSC试验和确定正确的PCM有效容量或焓函数是值得的。(C)2015爱思唯尔有限公司版权所有。
Reliable parameters of phase change material are essential for design and simulation of the PCM floor, which can be effectively used in heating system with non-continuous energy. This paper summarized latent heat, solidus temperature and liquids temperature of a typical PCM (capric acid) from reported tests based on differential scanning calorimeter (DSC). It is discovered that the results for the same PCM were significantly incongruent. Then, we arranged DSC tests with different procedures on capric acid and use the acquired parameters in simulations of a PCM floor, which has been reported with detailed experimental results in our former research. The aim is to present reliable latent heat, solidus temperature and liquids temperature of this common PCM and assess the impact of misinterpreted enthalpy-capacity function on the simulated thermal storage and releasing effect of the PCM floor. Errors with 33 %-883 % deviation for phase transition range of PCM were discovered from the improperly arranged tests. In the cases of simulation, a maximum difference of 20% was observed for the floor surface temperature. It means it is worthwhile setting standard DSC tests and ascertaining right effective capacity or enthalpy function of PCM in simulations related to PCM system design. (C) 2015 Elsevier Ltd. All rights reserved.