[1]张丽娜,刘敏珊,董其伍..超临界二氧化碳细管内流动与换热特性分析研究[J].郑州大学学报(工学版),2009,30(04):69-72.
ZHANG Lina,LIU Minshan,DONG Qiwu.Analysis of Flow and Heat Transfer Characteristics ofSupercritical C02 in Circular Tube[J].Journal of Zhengzhou University (Engineering Science),2009,30(04):69-72.
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超临界二氧化碳细管内流动与换热特性分析研究(
)
《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]
- 卷:
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30卷
- 期数:
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2009年04期
- 页码:
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69-72
- 栏目:
-
- 出版日期:
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1900-01-01
文章信息/Info
- Title:
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Analysis of Flow and Heat Transfer Characteristics ofSupercritical C02 in Circular Tube
- 作者:
-
张丽娜; 刘敏珊; 董其伍.
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郑州大学工学院热能工程研究中心,河南郑州,450002, 郑州大学工学院热能工程研究中心,河南郑州,450002, 郑州大学工学院热能工程研究中心,河南郑州,450002
- Author(s):
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ZHANG Lina; LIU Minshan; DONG Qiwu
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Thermal Energy Engineering Research Centre，Zhengzhou University，Zhengzhou 450002，China
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- 关键词:
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超临界流体; 对流换热; 二氧化碳; 数值研究
- Keywords:
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upercritical fluid; convection heat transfer; carbon dioxide; numerical study
- 文献标志码:
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A
- 摘要:
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对超临界压力下二氧化碳在水平管内的对流换热进行了模拟研究,分析了热流密度、壁面温度、质量流量以及压力等对二氧化碳对流换热的影响.结果表明:热流密度和壁面温度对换热系数的影响相对较小,质量流量和压力的影响较为显著,质量流量升高,传热系数有明显提高,压力越接近二氧化碳的临界压力,传热系数在临界点附近的变化越明显,峰值越高.
- Abstract:
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Convection heat transfer of CO，at supercritical pressures in horizontal circular tube is studied numerically．The effect of heat flux，temperature of the wall，mass flux，and pressure on the heat transfer coeffi—cient is investigated．The simulated data indicates that heat flux and temperature of the wall affect slightly theconvection heat transfer of supercritical C02，and mass flux and pressure affect it significantly．With the in—crease of mass flux，heat transfer coefficient is improved distinctly．The operation pressure is closer to the critical pressure，the change of heat transfer coefficient near critical line is clearer，and the peak value is higher．
更新日期/Last Update:
1900-01-01