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超临界CO_2在管内流动换热特性的实验研究 被引量:4

Experi mental Study on Heat Transfer Characteristics of Supercritical Carbon Dioxidein Horizontal Tube
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摘要 以超临界二氧化碳为研究对象,对其在水平管内与水成垂直交叉流动的换热特性进行了实验研究。实验结果表明,超临界二氧化碳在外部水垂直交叉流动冷却下的入口压力、质量流量、冷却水流量的变化都对换热性能产生一定的影响。并且比较了两种不同冷却方式,即在逆流和垂直交叉流形式下,Re和Pr数的变化规律;最后,利用实验数据对四个考虑不同影响因素的常用经验关联式进行了验证,指出了适合实验条件的关联式。 The heat transfer characteristics of carbon dioxide in a horizontal tube with water in the vertical cross flow form was ex- perimentally investigated. The results indicate that the changes of inlet pressure, mass flux, and cooling water flow have great effects on the heat transfer performance. The variations of Reynolds number and Prandtl number were obtained in counter flow and vertical cross flow. The four conventional correlations for convection heat transfer of supercritical CO2 were verified by the experimental data in this study and the correlation fit for this experimental condition was determined.
出处 《制冷学报》 CAS CSCD 北大核心 2007年第1期8-11,共4页 Journal of Refrigeration
基金 天津市自然科学基金项目(05YFJMJC06200)
关键词 工程热物理 超临界 关联式 二氧化碳 换热 Engineering thermophysics Supercritical Correlation Carbon dioxide Heat transfer
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参考文献9

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同被引文献37

  • 1候光武,丁信伟,陈彦泽,陈金如.超临界二氧化碳传热特性的研究[J].化工装备技术,2006,27(1):25-30. 被引量:6
  • 2Jong Kyu Kim, Hong Kyu Jeon, Joon Sik Lee. Wall temperature measurement and heat transfer correlation of turbulent supercritical carbon dioxide now in vertical circular/non-circular tubes [ J ]. Nuclear Engineering and Design,2007,237 : 1795-1802.
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