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作者:

Li, Liyan (Li, Liyan.) | Liu, Zhongliang (Liu, Zhongliang.) (学者:刘中良) | Zhao, Lingqian (Zhao, Lingqian.) | Li, Yanxia (Li, Yanxia.)

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摘要:

Different nucleation types of water drops were summarized, calculated and analyzed on the basis of classical nucleation theory, and experiments on horizontal cold surfaces were carried out under natural convection to examine the influences of hydrophobic surfaces on frost formation. Illustration of coefficient functions of energy barriers of different nucleation types indicates that the energy barrier to nucleation on a convex surface is relatively larger than that on a concave surface. If significant influences on water drop nucleation are expected of foreign surfaces, the ratio of the size of the foreign nucleus to the size of the critical nucleus of the new phase should vary within the range 0-1. If this ratio is larger than 10, there is no distinction for different heterogeneous nucleation types of water drops. The experiment results show that when there are no observable water drops develop at the early stage of frost formation, the frost crystals on the hydrophobic surface are even denser. If deposition of ice particles is dominant after frost formation starting, the frost growth on the hydrophobic surface and untreated surface is in the same pattern.

关键词:

Nucleation Surface characteristics Frost formation

作者机构:

  • [ 1 ] [Li, Liyan]Beijing Univ Technol, Coll Environm & Energy Engn, Minist Educ, Key Lab Enhanced Heat Transfer, Beijing 100124, Peoples R China
  • [ 2 ] [Liu, Zhongliang]Beijing Univ Technol, Coll Environm & Energy Engn, Minist Educ, Key Lab Enhanced Heat Transfer, Beijing 100124, Peoples R China
  • [ 3 ] [Zhao, Lingqian]Beijing Univ Technol, Coll Environm & Energy Engn, Minist Educ, Key Lab Enhanced Heat Transfer, Beijing 100124, Peoples R China
  • [ 4 ] [Li, Yanxia]Beijing Univ Technol, Coll Environm & Energy Engn, Minist Educ, Key Lab Enhanced Heat Transfer, Beijing 100124, Peoples R China
  • [ 5 ] [Li, Liyan]Beijing Univ Technol, Beijing Adv Innovat Ctr Future Internet Technol, Beijing 100124, Peoples R China

通讯作者信息:

  • 刘中良

    [Liu, Zhongliang]Beijing Univ Technol, Coll Environm & Energy Engn, Minist Educ, Key Lab Enhanced Heat Transfer, Beijing 100124, Peoples R China

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来源 :

INTERNATIONAL JOURNAL OF THERMAL SCIENCES

ISSN: 1290-0729

年份: 2019

卷: 137

页码: 343-351

4 . 5 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:136

JCR分区:1

被引次数:

WoS核心集被引频次: 7

SCOPUS被引频次: 7

ESI高被引论文在榜: 0 展开所有

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