水滴结冰相变体积膨胀规律

doi:10.13229/j.cnki.jdxbgxb201605024

吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (5): 1546-1551.doi: 10.13229/j.cnki.jdxbgxb201605024

水滴结冰相变体积膨胀规律

金敬福¹, 韩丽曼¹, 曹敏², 李杨¹, 齐迎春¹, 丛茜^1,3

1.吉林大学生物与农业工程学院,长春130022;
2.吉林大学学报编辑部,长春130022;
3.吉林大学汽车仿真与控制国家重点实验室,长春 130022

收稿日期:2015-06-24 出版日期:2016-09-20 发布日期:2016-09-20
通讯作者: 丛茜(1963-,女,教授,博士生导师.研究方向:工程仿生学.E-mail:congqian@jlu.edu.cn
作者简介:金敬福(1978-,男,副教授,博士.研究方向:机械表面效应及表面技术.E-mail:jinjingfu@jlu.edu.cn
基金资助:
吉林省教育厅“十二五”科学研究项目(2015-473,2015-471); 吉林大学研究生创新基金项目(2016167).

Volume expansion rule of water droplets during freezing process

JIN Jing-fu¹, HAN Li-man¹, CAO Min², LI Yang¹, QI Ying-chun¹, CONG Qian^1,3

1.College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China;
2.Editorial Department of Journals, Jilin University, Changchun 130022, China;
3.State Key Laboratory of Automotive Simulation and Control, Jilin University,Changchun 130022,China

Received:2015-06-24 Online:2016-09-20 Published:2016-09-20

摘要/Abstract

摘要： 利用自制的半导体制冷显微试验观察装置,对冷表面水滴结冰过程中的相变发生点、相变瞬间时长和相应的水滴体积变化规律进行了定量测定,并着重对水滴结冰相变过程中的直径变化系数、高度变化系数和体积膨胀系数进行统计分析。试验结果表明,冷表面水滴结冰过程中相变自下而上完成;结冰过程中水滴超过1.09的体积膨胀集中发生在相变瞬间;相对于液体进入过冷状态的时间,相变瞬间短暂而迅速。研究结论在解释结冰过程中的短时间内大体积膨胀系数及变形带来的冻胀危害根源的同时,提出利用水结冰过程中自发的相变膨胀释能来降低部件表面结冰附着强度,为一种新型除冰/防结冰方法提供了理论和试验依据。

关键词: 工程热力学, 结冰, 相变, 体积膨胀系数

Abstract: The phase transition point, duration and volume change rule of water droplet during freezing process were quantitatively determined using a self-made semiconductor refrigeration device. The diameter variation coefficient, height variation coefficient and the volume expansion coefficient in phase change process are statistically analyzed. Experimental results show that the phase transition of water droplet freezing is from bottom to top. In the freezing process, the volume expansion of more than 1.09 occurs in the instant of phase transition. Compared to the duration as the liquid goes to the cold state, the phase transition is much fast. The results of this study may explain the root of frost heave during freezing process with high volume expansion coefficient and deformation. The results also suggest that the spontaneous phase transition expansion can be used to reduce or resolve the ice adhesion strength on a object surface, thus, providing theoretical and experimental basis for developing new deicing method.

Key words: engineering thermodynamics, icing, phase transformation, volume expansion coefficient

中图分类号:

TB131

金敬福, 韩丽曼, 曹敏, 李杨, 齐迎春, 丛茜. 水滴结冰相变体积膨胀规律[J]. 吉林大学学报(工学版), 2016, 46(5): 1546-1551.

JIN Jing-fu, HAN Li-man, CAO Min, LI Yang, QI Ying-chun, CONG Qian. Volume expansion rule of water droplets during freezing process[J]. 吉林大学学报(工学版), 2016, 46(5): 1546-1551.

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水滴结冰相变体积膨胀规律

Volume expansion rule of water droplets during freezing process

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