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试验研究
钉头管自支承式换热器壳程性能研究
江楠 1 ,江飞飞 1 ,许海峰 2
(1. 华南理工大学化工机械研究所,广东广州 510641;
2. 华南理工大学科技实业总厂,广东广州 510640)
摘要:对钉头管自支承式换热器钉头纵向间距分别为 20, 35和 50 mm 的三种钉头管- 光管混合
管束进行了壳程性能试验研究,并与纯光管管束试验进行了比较,得到了钉头管自支承式换热器的
壳程摩擦阻力系数和传热膜系数的回归关联式。研究结果表明钉头管自支承式换热器具有良好的
壳程强化传热性能,当 1000≤R e≤4295时,以钉头纵向间距 s = 35 mm 的混合管束的α/Δp性能最
优,其平均值比光管管束提高了 34%。
关键词:自支承式换热器;钉头管;混合管束;壳程强化传热
中图分类号: TQ051. 5; TQ050. 3 文献标识码: A 文章编号: 1001 - 4837 (2008) 03 - 0018 - 04
Research on the Shell S ide of Self - support Hea t Exchanger w ith M ixed
Tubes Bundles of P in - f inned and Pla in tubes
J IANG Nan1 , J IANG Fe i - fe i1 , XU Ha i - feng2
( 1. Institute of Chem ical Engineering and Machinery, South China University of Technology, Guangzhou
510641, China; 2. The Science and Technology Industrial Factory of South China University of Technolo
gy, Guangzhou 510640, China)
Abstract: This thesis conducted a shell - side performance research on three kinds of m ixed tubes bundles
of p in - finned and p lain tubes whose longitudinal distance between nailheads are s = 20, 35, 50 mm re
spectively. paring with the experiment on bundles of p lain tubes, this thesis gained the regres
sion correlative equation concerning the friction resistance coefficient of shell side and heat transfer film
coefficient of self - support heat exchanger of p in - finned tubes. The research results s