Impact of Triangle Leakage on Comprehensive Performanceof Heat Exchangers with Helical Baffles
[1]LIU Min-shan,XU Wei-feng,JIN Zun-long,et al.Impact of Triangle Leakage on Comprehensive Performanceof Heat Exchangers with Helical Baffles[J].Journal of Zhengzhou University (Engineering Science),2014,35(06):1-4.[doi:10.3969/ j. issn.1671 -6833.2014.06.001]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
35
Number of periods:
2014 06
Page number:
1-4
Column:
Public date:
2014-11-25
- Title:
- Impact of Triangle Leakage on Comprehensive Performanceof Heat Exchangers with Helical Baffles
- Keywords:
- heat exchanger; helical baffle ; leakage ; numerical simulation
- CLC:
- -
- DOI:
- 10.3969/ j. issn.1671 -6833.2014.06.001
- Abstract:
- A numerical simulation of trisection-ellipse heat exchangers with helical baffles is carried out， andthe helix angles are 15° and 20° respectively ， and we studied the impact of triangle leakage between continu-ously overlapped and adjacent baffles on heat transfer and resistance performance of heat exchangers.Throughthe comparative analysis about the simulation results of existing triangle leakage and that of blocking trianglearea without leakage , the results show :triangle leakage makes a more serious short circuit flow for the shell-si-ded fluid;Triangle leakage makes heat transfer coefficient，shell-sided pressure drop and comprehensive per-formance of heat exchanger reduce. When triangle leakage is blocked，heat transfer coefficient increases by8.5% ~ 11% , shell-sided pressure drop increases marginally , comprehensive performance increases by 8.1 %~11 . 1 % .
- References:
-
[1]MASTER B I，CHUNANGAD K S，BOXMA A J,etal. Most frequently used heat exchanger from pionee-ring research to worldwideapplication [ J ]. HeatTransfer Engineering ，2006,27(6) :4- 11.[2]潘振,陈宝东,商丽艳.螺旋折流板换热器的研究与进展[J].节能技术,2006,24( 1 ):82 - 85.[3]王秋旺,罗来勤,曾敏,等.交错螺旋折流板管壳式换热器壳侧传热与压力降性能[J].化工学报，2005,56(4) :598 -601 .
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