垂直矩形窄通道换热特性实验研究
本文以去离子水为工质进行实验，研究垂直矩形窄通道换热特性。采用单侧壁面加热，改变工质流动参数，分析沿流动方向的壁面温度分布特性和测温点处的局部换热系数。实验表明：以对流沸腾为主的阶段，换热系数随着质量流速的增加而增加，入口温度对于换热系数基本没有影响；当干度x〈0．1时，换热系数随着干度的增加而降低，当干度x〉0．1时，换热系数随着干度的增加而基本保持不变。以核态沸腾为主的阶段，换热系数随干度的增加而略微上升，随入口温度的升高而增加。...
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| Published in | 制冷学报 Vol. 35; no. 1; pp. 14 - 19 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
上海理工大学制冷与低温工程研究所 上海200093
2014
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-4339 |
| DOI | 10.3969/j.issn.0253-4339.2014.01.014 |
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| Abstract | 本文以去离子水为工质进行实验，研究垂直矩形窄通道换热特性。采用单侧壁面加热，改变工质流动参数，分析沿流动方向的壁面温度分布特性和测温点处的局部换热系数。实验表明：以对流沸腾为主的阶段，换热系数随着质量流速的增加而增加，入口温度对于换热系数基本没有影响；当干度x〈0．1时，换热系数随着干度的增加而降低，当干度x〉0．1时，换热系数随着干度的增加而基本保持不变。以核态沸腾为主的阶段，换热系数随干度的增加而略微上升，随入口温度的升高而增加。 |
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| AbstractList | TB657.5%TK124; 本文以去离子水为工质进行实验,研究垂直矩形窄通道换热特性.采用单侧壁面加热,改变工质流动参数,分析沿流动方向的壁面温度分布特性和测温点处的局部换热系数.实验表明:以对流沸腾为主的阶段,换热系数随着质量流速的增加而增加,入口温度对于换热系数基本没有影响;当干度x＜0.1时,换热系数随着干度的增加而降低,当干度x＞0.1时,换热系数随着干度的增加而基本保持不变.以核态沸腾为主的阶段,换热系数随干度的增加而略微上升,随入口温度的升高而增加. 本文以去离子水为工质进行实验，研究垂直矩形窄通道换热特性。采用单侧壁面加热，改变工质流动参数，分析沿流动方向的壁面温度分布特性和测温点处的局部换热系数。实验表明：以对流沸腾为主的阶段，换热系数随着质量流速的增加而增加，入口温度对于换热系数基本没有影响；当干度x〈0．1时，换热系数随着干度的增加而降低，当干度x〉0．1时，换热系数随着干度的增加而基本保持不变。以核态沸腾为主的阶段，换热系数随干度的增加而略微上升，随入口温度的升高而增加。 |
| Author | 刘效德 陶乐仁 郑志皋 黄理浩 |
| AuthorAffiliation | 上海理工大学制冷与低温工程研究所,上海200093 |
| AuthorAffiliation_xml | – name: 上海理工大学制冷与低温工程研究所 上海200093 |
| Author_FL | Huang Lihao Liu Xiaode Tao Leren Zheng Zhigao |
| Author_FL_xml | – sequence: 1 fullname: Liu Xiaode – sequence: 2 fullname: Tao Leren – sequence: 3 fullname: Zheng Zhigao – sequence: 4 fullname: Huang Lihao |
| Author_xml | – sequence: 1 fullname: 刘效德 陶乐仁 郑志皋 黄理浩 |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DOI | 10.3969/j.issn.0253-4339.2014.01.014 |
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| DocumentTitleAlternate | Experimental Study for Heat Transfer Characteristics of Vertical Rectangular Narrow Channels |
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| EndPage | 19 |
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| Keywords | heat transfer characteristics 实验研究 experimental study 局部换热系数 换热特性 rectangular narrow channels local heat transfer coefficient 矩形窄通道 |
| Language | Chinese |
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| Notes | 11-2182/TB heat transfer characteristics; local heat transfer coefficient; rectangular narrow channels ;experimental study Liu Xiaode Tao Leren Zheng Zhigao Huang Lihao （Institute of Refrigeration ＆ Cryogenics, University of Shanghai for Science and Technology, Shanghai,200093, Chi- na） Ionized water was used to investigate the heat transfer characteristics of vertical rectangular narrow channels experimentally. The distribution characteristics of wall-temperature and the local heat transfer coefficient were analyzed by using single-side heating and va- rious parameters of the working fluid. The experiment results show that the heat transfer coefficient is increased with the increase of the mass flow rate but the inlet temperature substantially has no effect on the heat transfer coefficient for convection boiling flow. When the dryness X 〈 0. 1, the heat transfer coefficient is increased with decreases of the dryness ; when the dryness X 〉 0. 1, the heat transfer coeffi- cient keeps constant with increases of dr |
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| PublicationTitle | 制冷学报 |
| PublicationTitleAlternate | Journal of Refrigeration |
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| PublicationYear | 2014 |
| Publisher | 上海理工大学制冷与低温工程研究所 上海200093 |
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| Snippet | 本文以去离子水为工质进行实验，研究垂直矩形窄通道换热特性。采用单侧壁面加热，改变工质流动参数，分析沿流动方向的壁面温度分布特性和测温点处的局部换热系数。实验表... TB657.5%TK124; 本文以去离子水为工质进行实验,研究垂直矩形窄通道换热特性.采用单侧壁面加热,改变工质流动参数,分析沿流动方向的壁面温度分布特性和测温点处的局部换热系... |
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| SubjectTerms | 实验研究 局部换热系数 换热特性 矩形窄通道 |
| Title | 垂直矩形窄通道换热特性实验研究 |
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