管壳式换热器壳侧传热系数的影响因素研究

摘要针对工业中广泛应用的管壳式换热器，采用3种计算方法分别对7台典型的管壳式换热器的壳侧换热系数进行了计算研究，研究结构参数对壳侧传热性能影响的结果表明，管子节径比、折流板间距、折流板与壳体内壁间隙以及管束外缘与壳体内壁间隙等结构参数均对壳侧的传热性能有较大影响。不同计算方法之间的对比分析表明：以Kern法和Donohue法为代表的整体法相对于流路分析法偏差较大，而Bell-Delaware法的计算精度相对于整体法明显提高。

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	杨敏
	张玉祯
	贾占斌

关键词：传热系数 Kern法 Donohue法 Bell-Delaware法流路分析法管壳式换热器

Abstract： Several kinds of method were used to calculate the shell-side heat transfer coefficients of seven typical industrial shell-and-tube heat exchangers, and detail analysis was carried out for several key structural parameters which could affect the heat transfer performance of the shell side obviously. The results of the analysis show that the key parameters such as the ratio of the pitch to the diameter of the tube, the baffle spacing, the shell-to-baffle clearance and the tube bundle-to-shell clearance have important influence on the heat transfer performance of the shell side. The results of the comparison and analysis of different calculation methods show that both the Kern method and Donohue method have an obvious deviation in contrast to the stream analysis method, while the Bell-Delaware shows a much better accuracy than the Kern method and Donohue method.

Keywords： heat transfer coefficient； Kern method； Donohue method； Bell-Delaware method； stream analysis method； shell-and-tube heat exchanger

Received 2018-02-08;

Corresponding Authors: 贾占斌,E-mail:zhanbin.jia@tju.edu.cn。 Email: zhanbin.jia@tju.edu.cn

About author: 杨敏(1984-),男,硕士研究生,工程师,现从事核设备设计工作。

引用本文:

杨敏, 张玉祯, 贾占斌.管壳式换热器壳侧传热系数的影响因素研究[J]. 化学工业与工程, 2019,36(3): 64-71

Yang Min, Zhang Yuzhen, Jia Zhanbin.Study on the Influence Factor of the Shell-Side Heat Transfer Coefficient in Shell-and-Tube Heat Exchanger[J]. Chemcial Industry and Engineering, 2019,36(3): 64-71

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