Experimental and numerical study on thermal energy storage of polyethylene glycol/expanded graphite composite phase change material
Experimental and numerical study on thermal energy storage of polyethylene glycol/expanded graphite composite phase change material
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DOI：
10.1016/j.enbuild.2015.11.042
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发表时间：
2016-01-01
影响因子：
6.7
通讯作者：
Jin, Weizhun
中科院分区：
文献类型：
--
作者：
Lv, Yajun;Zhou, Weibing;Jin, Weizhun
聚乙二醇（PEG）是一种导热系数低的有机相变材料，这阻碍了相变材料的应用。本文首先制备了不同质量分数的PEG/膨胀石墨复合材料，并对其热性能进行了研究。在此基础上，进行了纯PEG和PEG/EG相变材料的潜热储能实验，研究了相变材料在充放电过程中某一位置的温度变化规律。与纯PEG相比，PEG/EG的LHTES可以在潜热损失较小的情况下显著提高传热速率。(C)2015 Elsevier B. V.版权所有。
Polyethylene glycol (PEG) is one of organic phase change materials with low thermal conductivity, which hindered the application of the PCM. In this paper, PEG/expanded graphite (EG) with the different mass fraction was prepared and the thermal properties were investigated first. And then, experiments of latent heat thermal energy storage (LHTES) with pure PEG and PEG/EG PCMs were conducted to investigate the temperature involutions at certain position in LHTES during the charging and discharging processes. Compared with the pure PEG, LHTES with PEG/EG can dramatically enhance the heat transfer rate with little latent heat loss. (C) 2015 Elsevier B.V. All rights reserved.