| 八水氢氧化钡相变材料的强化传热实验 |
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| 引用本文： | 盛强,邢玉明,王泽.八水氢氧化钡相变材料的强化传热实验[J].航空动力学报,2013,28(9):1927-1932. |
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| 作者姓名： | 盛强 邢玉明 王泽 |
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| 作者单位： | 北京航空航天大学航空科学与工程学院, 北京100191;黑龙江大学建筑工程学院, 哈尔滨150080;北京航空航天大学航空科学与工程学院, 北京100191;北京航空航天大学航空科学与工程学院, 北京100191 |
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| 基金项目： | 国家自然科学基金(50876004);黑龙江大学青年科学基金(QL201042) |
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| 摘 要： | 采用差示扫描量热法(DSC)对八水氢氧化钡相变材料进行热物性分析,总结出一种针对结晶水合盐相变温度与潜热准确可靠的测量方法.通过扫描电子显微镜(SEM)获得相变材料与金属容器截面腐蚀情况的图像,证明八水氢氧化钡与紫铜有优良的相容性.分别对含/未含泡沫铜的固液相变蓄热体进行实验研究,结果表明:泡沫铜填充使相变材料在固相区内熔化时间减少了26%,增强了相变材料的传热效果,而且将八水氢氧化钡过冷度降低了50%.
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| 关 键 词： | 八水氢氧化钡 示差扫描量热法 扫描电子显微镜 泡沫铜 强化传热 |
| 收稿时间： | 2012/11/19 0:00:00 |
Experiment on heat transfer enhancement of barium hydroxide octahydrate phase change material |
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| SHENG Qiang,XING Yu-ming and WANG Ze.Experiment on heat transfer enhancement of barium hydroxide octahydrate phase change material[J].Journal of Aerospace Power,2013,28(9):1927-1932. |
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| Authors: | SHENG Qiang XING Yu-ming and WANG Ze |
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| Institution: | School of Aeronautics Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;School of Civil Engineering, Heilongjiang University, Harbin 150080, China;School of Aeronautics Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;School of Aeronautics Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | The thermal properties of barium hydroxide octahydrate(Ba(OH)2·8H2O) were measured by differential scanning calorimetry(DSC).The DSC measurement method can be used for phase change temperature and latent heat of salt hydrates.The cross section image from scanning electron microscope(SEM) indicates that Ba(OH)2·8H2O and copper present excellent compatibility.Experiments were conducted to investigate heat transfer characteristics of Ba(OH)2·8H2O with/without copper foams.The results show that melting time of the phase change material(PCM) is shortened by 26% in PCM solid zone and the heat transfer rate of the PCM is enhanced.The supercooling degree of Ba(OH)2·8H2O is reduced by 50%. |
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| Keywords: | barium hydroxide octahydrate DSC SEM copper foams heat transfer enhancement |
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