Preparation and application effects of a novel form-stable phase change material as the thermal storage layer of an electric floor heating system
Preparation and application effects of a novel form-stable phase change material as the thermal storage layer of an electric floor heating system
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DOI：
10.1016/j.enbuild.2009.03.009
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发表时间：
2009-08
影响因子：
6.7
通讯作者：
Jianli Li;P. Xue;Hong He;Wenying Ding;Jinmin Han
中科院分区：
文献类型：
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作者：
Jianli Li;P. Xue;Hong He;Wenying Ding;Jinmin Han
以石蜡微胶囊（MEP）为相变储热介质，高密度聚乙烯/木粉复合材料为基体，制备了一种新型的定形相变材料（FSPCM）。它具有以下优点：合适的相变温度，在相变温度区有较大的表观比热，合适的导热系数，良好的保形性和尺寸稳定性。因此，它适用于无封装的节能建筑。对FSPCM作为电地板采暖系统蓄热层材料的温度调节和成本降低效果进行了模拟研究。结果表明，采用FSPCM板作为热释光材料具有较好的调温效果和较低的成本，其应用效果取决于EFHS的加热方式和FSPCM板的厚度。成本效益分析还表明，制备的FSPCM有可能作为TSL在电地板采暖系统。
A novel form-stable phase change material (FSPCM) was prepared, which comprises micro-encapsulated paraffin (MEP) as the latent heat storage medium and high density polyethylene/wood flour composite as the matrix. It has the following merits: proper phase transition temperature, large apparent specific heat in phase change temperature region, suitable thermal conductivity, good shape retention and dimensional stability. Therefore, it is suitable for the applications in energy efficient buildings without encapsulation. Simulation studies were performed to investigate the temperature-regulating and cost-reduction effects of the FSPCM as the thermal storage layer (TSL) material of an electric floor heating system (EFHS). The results show that it is promising to use the FSPCM plate as the TSL to achieve better temperature-regulating and cost-reduction effects, and the application effects depend on the heating mode of the EFHS and the thickness of FSPCM plates. The cost-benefit analysis indicates also that the prepared FSPCM has the potential to serve as the TSL in an electric floor heating system.