CIESC Journal

• 化工学报 • 上一篇    

花瓣状翅片管套管间润滑油强化传热性能

邓先和,王世平,林培森,邓颂九   

  1. 华南理工大学化工研究所,华南理工大学化工研究所,华南理工大学化工研究所,华南理工大学化工研究所 广州 510641 ,广州 510641 ,广州 510641 ,广州 510641
  • 出版日期:1994-04-25 发布日期:1994-04-25

INVESTIGATION OF THE BEHAVIOUR OF HEAT TRANSFER ENHANCEMENT WITHIN ANNULAR TUBE WITH PETAL FORM FIN TUBE

Deng Xianhe, Wang Shiping, Lin Peisen and Deng Songjiu (Chemical Engineering Research Institute of South China University of Technology,Guangzhou 510641)   

  • Online:1994-04-25 Published:1994-04-25

摘要: <正> 1 引言 润滑油在管外环隙间轴向流动时,由于流体粘度大,雷诺数小,一般为层流,光滑管的传热膜系数很低,在本实验范围,Re=300~1000,Pr≈200,油冷却时传热膜系数仅为240~360W/(m~2·℃)。本研究采用花瓣状翅片管强化环隙间润滑油的冷却传热,可有效地扩大传热表面积,并使高粘流体在翅片管三角齿形翅片间轴向绕流到达翅根部,翅间流动死角较小,在本实验范围内,以光坯管面积计的传热膜系数在较好的管参数时可达800~3500W/(m~2·℃)。花瓣状翅片管是对高粘流体较好的一种传热管型。

Abstract: Experimental investigation of heat transfer enhancement of lubricating - oil flowing through the annular space with petal - form fin tube is reported in this paper. Eight kinds of petal - form fin tube are investigated, and the mechanism of heat transfer enhancement with petal - form fins disturbing oil flow is analysed. The results of evaluation of the efficiency of heat transfer enhancement of eight petal - form fin tubes have also been reported.

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