| 花瓣状翅片管套管间润滑油强化传热性能 |
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| 引用本文： | 邓先和,王世平.花瓣状翅片管套管间润滑油强化传热性能[J].化工学报,1994,45(2):253-256. |
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| 作者姓名： | 邓先和 王世平 |
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| 作者单位： | 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 |
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| 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。
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| 关 键 词： | 翅片管 套管环隙 润滑油 传热 |
INVESTIGATION OF THE BEHAVIOUR OF HEAT TRANSFER ENHANCEMENT WITHIN ANNULAR TUBE WITH PETAL FORM FIN TUBE |
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| Deng Xianhe,Wang Shiping,Lin Peisen and Deng Songjiu.INVESTIGATION OF THE BEHAVIOUR OF HEAT TRANSFER ENHANCEMENT WITHIN ANNULAR TUBE WITH PETAL FORM FIN TUBE[J].Journal of Chemical Industry and Engineering(China),1994,45(2):253-256. |
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| Authors: | Deng Xianhe Wang Shiping Lin Peisen and Deng Songjiu |
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| 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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| Keywords: | petal-form fin tube tube annulus lubricating-oil heat transfer enhancement |
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