JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 29 Issue 2
March 2014
Article Contents
FENG Li-hua, WU Xue-hong and LYU Yan-li. The effect of tube row number on heat transfer characteristics of the dimpled fin tube heat exchanger[J]. Journal of Light Industry, 2014, 29(2): 87-90,95. doi: 10.3969/j.issn.2095-476X.2014.02.021
Citation: FENG Li-hua, WU Xue-hong and LYU Yan-li. The effect of tube row number on heat transfer characteristics of the dimpled fin tube heat exchanger[J]. Journal of Light Industry, 2014, 29(2): 87-90,95. doi: 10.3969/j.issn.2095-476X.2014.02.021 shu

The effect of tube row number on heat transfer characteristics of the dimpled fin tube heat exchanger

  • Received Date: 2013-12-09
    Available Online: 2014-03-15
  • The effect of different tube row number on heat transfer and pressure drop characteristics of dimpled fin tube heat exchanger was investigated.The results showed that:the ratio of heat transfer rate and pressuer drop(QP) and COP decreased with the increase of tube row number, QP and COP of two-row tube was the biggest.Compared with the three, four, five-row tube, average Nu number of two-row tube increased by 11.1%, 21.7%, 23.2% at Re=1 138~3 415, respectively.The flow filed indicated that the arrangement of the dimple could intensify flow turbulence,which enhanced the heat transfer,but when the number of tube rows are 4 and 5, the temperature field changed little,which indicated that the heat transfer didn't change significantly when the number of tube rows increased.So the comprehensive performance of two row tube rows was better.
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