周期性环境条件下相变材料对系统热控效果的影响

doi:10.3969/j.issn.0253-2778.2016.10.008

中国科学技术大学学报 ›› 2016, Vol. 46 ›› Issue (10): 845-852.DOI: 10.3969/j.issn.0253-2778.2016.10.008

周期性环境条件下相变材料对系统热控效果的影响

叶宏

1.中国科学技术大学热科学和能源工程系，安徽合肥 230027； 2.北京航天发射技术研究所，北京 100076

收稿日期:2016-03-16 修回日期:2016-04-21 出版日期:2016-10-31 发布日期:2016-10-31
通讯作者: 叶宏
作者简介:叶宏(通讯作者)，男，1973年生，博士/副教授. 研究方向：相变传热与太阳能利用. E-mail: hye@ustc.edu.cn
基金资助:
国家自然科学基金（51576188）资助.

Effects of PCM on thermal control performance of a thermal control system subjected to periodic ambient conditions

YE Hong

1.Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230026, China; 2.Beijing Institute of Space Launch Technology, Beijing 100076, China

Received:2016-03-16 Revised:2016-04-21 Online:2016-10-31 Published:2016-10-31

摘要/Abstract

摘要： 运行于户外周期性环境条件下的热控系统在工业领域有重要应用价值，降低系统能耗和提高温控效果是其性能改进关键所在.为此，采用实验和仿真手段研究了热控系统围护结构中相变材料（PCM）对系统热控效果的影响.典型气象日研究结果表明，相较于聚苯乙烯，PCM在广州地区能显著降低系统能耗（754%）、目标表面温度波动幅度（761%）和轴向温差（569%），在南京和吐鲁番地区可分别降低目标表面温度波动幅度413%和306%，但对系统能耗和目标轴向温差无改善；典型气象年结果表明，PCM在广州地区同样表现出热控优势，但热控效果对控温设定点、PCM相变范围和环境温度波动有很强的依赖性，当所选PCM相变范围包含控温设定点且与环境温度波动范围一致时，PCM能最大限度提高热控效果.

关键词: 周期性环境条件, 热控系统, 相变材料, 能耗, 控温效果

Abstract: Thermal control systems operating under periodic outdoor ambient conditions have numerous important applications in the industrial fields, and reducing system energy consumption and enhancing temperature control effects are key to their performance improvement. Therefore, the influences of phase change material (PCM) in the envelope of a thermal control system on thermal control effects were studied by means of experiment and simulation. The results of the typical meteorological day show that, compared with polystyrene, PCM can significantly reduce system energy consumption (by 754%), surface temperature fluctuation (by 761%) and axial temperature difference (by 569%) of the object in Guangzhou. In Nanjing and Turpan, the surface temperature fluctuation can be reduced by 413% and 306% respectively, no improvement is observed in system energy consumption and axial temperature difference. The results of the typical meteorological year indicate that PCM also exhibits the advantages of thermal control in Guangzhou, but thermal control effects are strongly dependent on the temperature control setpoint, phase change range and the fluctuation of the ambient temperature. When the phase change range of the selected PCM covers the setpoint and the fluctuation range of the ambient temperature, PCM can maximize thermal control effects.

Key words: periodic ambient conditions, thermal control system, phase change material, energy consumption, temperature control effect

叶宏，王子君，王丽伟，韦学中. 周期性环境条件下相变材料对系统热控效果的影响[J]. 中国科学技术大学学报, 2016, 46(10): 845-852.

YE Hong, WANG Zijun, WANG Liwei, WEI Xuezhong. Effects of PCM on thermal control performance of a thermal control system subjected to periodic ambient conditions[J]. Journal of University of Science and Technology of China, 2016, 46(10): 845-852.

周期性环境条件下相变材料对系统热控效果的影响

Effects of PCM on thermal control performance of a thermal control system subjected to periodic ambient conditions

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