两种池沸腾强化换热管的传热性能实验研究
对两种用于池沸腾换热的强化管在蒸发温度为5℃的工况下进行了水平管外传热性能的实验研究。两种管子为管内外双侧强化管,管外表面同属于TURBO-B类的强化换热管,但表面形状有区别。利用威尔逊图解法确定这两种管型的管内外换热系数的关联式,同？,根据实验测得的数据对这两种管型的换热性能进行比较。结合金相显微镜拍摄的外观形状,分析尺寸结构对强化换热管的换热性能的影响。结果得出：在相同工况下,准三角形形状的管内螺纹换热性能要比梯形好,且管内螺纹数越多,换热性能越好;在一定热流密度范围内,管外换热系数随着热流密度的增加而变大,这主要与管子外表面结构的凹穴半径、凹穴开口尺寸、次级表面通道的宽度和形状等因素有关...
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| Published in | 制冷学报 Vol. 32; no. 4; pp. 53 - 57 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
上海理工大学能源与动力工程学院 上海200093
2011
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-4339 |
| DOI | 10.3969/j.issn.0253-4339.2011.04.053 |
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| Abstract | 对两种用于池沸腾换热的强化管在蒸发温度为5℃的工况下进行了水平管外传热性能的实验研究。两种管子为管内外双侧强化管,管外表面同属于TURBO-B类的强化换热管,但表面形状有区别。利用威尔逊图解法确定这两种管型的管内外换热系数的关联式,同？,根据实验测得的数据对这两种管型的换热性能进行比较。结合金相显微镜拍摄的外观形状,分析尺寸结构对强化换热管的换热性能的影响。结果得出：在相同工况下,准三角形形状的管内螺纹换热性能要比梯形好,且管内螺纹数越多,换热性能越好;在一定热流密度范围内,管外换热系数随着热流密度的增加而变大,这主要与管子外表面结构的凹穴半径、凹穴开口尺寸、次级表面通道的宽度和形状等因素有关,且翅顶表面刻画的浅槽有利于池沸腾换热。 |
|---|---|
| AbstractList | 对两种用于池沸腾换热的强化管在蒸发温度为5℃的工况下进行了水平管外传热性能的实验研究。两种管子为管内外双侧强化管,管外表面同属于TURBO-B类的强化换热管,但表面形状有区别。利用威尔逊图解法确定这两种管型的管内外换热系数的关联式,同？,根据实验测得的数据对这两种管型的换热性能进行比较。结合金相显微镜拍摄的外观形状,分析尺寸结构对强化换热管的换热性能的影响。结果得出：在相同工况下,准三角形形状的管内螺纹换热性能要比梯形好,且管内螺纹数越多,换热性能越好;在一定热流密度范围内,管外换热系数随着热流密度的增加而变大,这主要与管子外表面结构的凹穴半径、凹穴开口尺寸、次级表面通道的宽度和形状等因素有关,且翅顶表面刻画的浅槽有利于池沸腾换热。 TB657.5%TK172; 对两种用于池沸腾换热的强化管在蒸发温度为5℃的工况下进行了水平管外传热性能的实验研究.两种管子为管内外双侧强化管,管外表面同属于TURBO-B类的强化换热管,但表面形状有区别.利用威尔逊图解法确定这两种管型的管内外换热系数的关联式,同时,根据实验测得的数据对这两种管型的换热性能进行比较.结合金相显微镜拍摄的外观形状,分析尺寸结构对强化换热管的换热性能的影响.结果得出:在相同工况下,准三角形形状的管内螺纹换热性能要比梯形好,且管内螺纹数越多,换热性能越好；在一定热流密度范围内,管外换热系数随着热流密度的增加而变大,这主要与管子外表面结构的凹穴半径、凹穴开口尺寸、次级表面通道的宽度和形状等因素有关,且翅顶表面刻画的浅槽有利于池沸腾换热. |
| Author | 李海珍 欧阳新萍 司少娟 |
| AuthorAffiliation | 上海理工大学能源与动力工程学院,上海200093 |
| AuthorAffiliation_xml | – name: 上海理工大学能源与动力工程学院 上海200093 |
| Author_FL | Ouyang Xinping Si Shaojuan Li Haizhen |
| Author_FL_xml | – sequence: 1 fullname: Li Haizhen – sequence: 2 fullname: Ouyang Xinping – sequence: 3 fullname: Si Shaojuan |
| Author_xml | – sequence: 1 fullname: 李海珍 欧阳新萍 司少娟 |
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| DocumentTitleAlternate | Experimental Study of Heat Transfer on Two Enhanced Tubes of Pool Boiling |
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| EndPage | 57 |
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| Keywords | 工程热物理 池沸腾 威尔逊图解法 高效强化换热管 核化空穴 |
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| Notes | An experimental study of heat transfer on two enhanced tubes of pool boiling was conducted at 5℃.The two tubes are enhanced both inside and outside.Both of the outer surfaces belong to the type of TURBO-B enhanced tube.The correlations of heat transfer coefficient on tube inside and outside were obtained by using Wilson plot method.Simultaneously,the performances of the tubes were compared according to the experimental data.Then the effects of the tube geometries were analyzed,which combined with appearance of the tubes photographed by metalloscope.It was concluded that at the same working condition,the performance of triangle shape was better than that of trapezoid,and the more the ridge inner was,the better the performance of inner tube was.At the range of certain heat flux,the heat transfer coefficient of outer tube was higher and higher as the heat flux is increased.The major factors contributed to pool boiling heat transfer were the size of reentrant cavity,the pitch of fin,the width and shape of subsurf |
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| SubjectTerms | 威尔逊图解法 工程热物理 核化空穴 池沸腾 高效强化换热管 |
| Title | 两种池沸腾强化换热管的传热性能实验研究 |
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