八水氢氧化钡相变材料储热性能实验

盛强; 邢玉明; 罗恒

doi:10.13700/j.bh.1001-5965.2013.0385

八水氢氧化钡相变材料储热性能实验

doi: 10.13700/j.bh.1001-5965.2013.0385

1. 北京航空航天大学航空科学与工程学院, 北京 100191;
2. 北京宇航系统工程研究所, 北京 100076

基金项目:

国家自然科学基金资助项目（50876004）

详细信息

作者简介:
盛强（1981- ），男，吉林长春人，博士生，shengqiang_buaa@126.com.

中图分类号: TK02
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出版历程
- 收稿日期: 2013-07-02
- 网络出版日期: 2014-05-20

Experiment on thermal storage performance of barium hydroxide octahydrate phase change material

1. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Beijing Institute of Aerospace Systems Engineering, Beijing 100076, China

摘要

摘要: 采用八水氢氧化钡（Ba（OH）₂·8H₂O）作为相变储热材料，经过150次熔化-凝固热循环实验，发现随着热循环次数的增加，Ba（OH）₂·8H₂O的相变点温度变化很小，但是该相变材料结晶时存在严重的过冷现象.通过扫描电子显微镜获得50次热循环后Ba（OH）₂·8H₂O与铝合金和紫铜金属材料之间的腐蚀情况图像，图像分析表明，Ba（OH）₂·8H₂O与紫铜有良好的相容性.搭建了含/未含泡沫铜的相变储能装置的实验台，对比实验结果表明，泡沫铜填充不仅可以提高相变材料的传热效率，而且能够有效地降低Ba（OH）₂·8H₂O的过冷度.
- 八水氢氧化钡 /
- 泡沫铜 /
- 相变材料 /
- 储热
Abstract: Thermal cycling tests were performed to determine the phase change temperature shift of pure barium hydroxide octahydrate (Ba(OH)₂·8H₂O) phase change material (PCM) with respect to 150 accelerated thermal cycles. The results show a slightly phase change temperature shift and a severe supercooling phenomenon with the increasing number of thermal cycles. The compatibility of Ba(OH)₂·8H₂O with the PCM containing materials like aluminum alloy and copper was also studied by using scanning electron microscope (SEM) after 50 thermal cycles. Ba(OH)₂·8H₂O was a stable PCM with good compatibility with copper as a containing material. An experimental setup was built to study the heat transfer performances of Ba(OH)₂·8H₂O with/without copper foams. The contrast experiments conclude that high porosity metal foams not only significantly enhance the heat transfer rate of PCMs, but also effectively reduce the supercooling degree of Ba(OH)₂·8H₂O.
- barium hydroxide octahydrate /
- copper foams /
- phase change material /
- thermal storage

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参考文献(12)

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