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化工学报  2013 

新型六分扇形螺旋折流板换热器壳程传热及流动特性

DOI: 10.3969/j.issn.0438-1157.2013.09.007, PP. 3123-3129

Keywords: 换热器,螺旋折流板,六分折流板,弓形折流板

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Abstract:

针对现有四分螺旋折流板换热器中心区域漏流明显的特征,提出了一种新型的六分扇形螺旋折流板换热器。建立了六分扇形螺旋折流板换热器的三维物理模型,应用AnsysCFX软件对其壳程流动与传热特性进行数值模拟,分析了不同螺旋角(10°、20°、30°、40°)和不同工况下六分扇形螺旋折流板换热器的壳侧性能,并与传统的弓形折流板换热器作对比。结果表明,六分扇形螺旋折流板可以显著减少三角区漏流现象的发生,壳程流体旋流特性较好。随着螺旋角的增大,壳侧速度场与温度场分布更加均匀,综合换热性能逐步提高。

References

[1]  Lutcha J,Nemcansky J.Performance improvement of tubular heat exchangers by helical baffles[J].Trans. IChemE,1990,68a:263-270
[2]  Stehlik P,Wadekar V V.Different strategies to improve industrial heat exchange[J].Heat Transfer Engineering,2002,23(6):36-48
[3]  Wang Q W,Chen G D,Chen Q Y,et al.Review of improvements on shell-and-tube heat exchangers with helical baffles[J].Heat Transfer Engineering,2010,31(10):836-853
[4]  Kral D,Stelik P,Vander P H J.Helical baffles in shell-and-tube heat exchangers(Ⅰ):Experimental verification[J].Heat Transfer Engineering,1996,17(1):93-101
[5]  Cao Xing(曹兴),Du Wenjing(杜文静),Cheng Lin(程林).Analyses on flow and heat transfer performance and entropy generation of heat exchanger with continuous helical baffles[J].CIESC Journal(化工学报),2012,63(8):2375-2382
[6]  Wang Liang(王良),Luo Laiqin(罗来勤),Wang Qiuwang(王秋旺),et al.Effect of inserting block plates on pressure drop and heat transfer in shell-and-tube heat exchangers with helical baffles[J].Journal of Engineering Thermophysics(工程热物理学报),2001,22:173-176
[7]  Song Xiaoping(宋小平),Pei Zhizhong(裴志中).Shell and tube heat exchanger with anti-short circuit spiral baffle plate[J].Static Equipment(静设备),2007,28(3):13-17
[8]  Liu Huajin(刘化瑾),Chen Yaping(陈亚平),Li Yanqing(李彦晴).Influence of equivalent helix angle on performance of trisection helix baffled heat exchanger[J].Chemical Engineering(China)(化学工程),2010,38(7):22-25
[9]  Wang Weihan(王伟晗),Chen Yaping(陈亚平),Wu Jiafeng(吴嘉峰),et al.Numerical simulation of flow field and temperature field in shell side of trisection helix heat exchangers[J].Journal of Engineering Thermophysics(工程热物理学报),2012,33(1):131-134
[10]  Sun Haitao(孙海涛),Chen Yaping(陈亚平),Wu Jiafeng(吴佳峰),et al.Shell-side heat transfer performance of circumferential overlap trisection helical baffle heat exchangers[J].CIESC Journal(化工学报),2012,63(5):1360-1366
[11]  Dong Cong(董聪),Chen Yaping(陈亚平),Wu Jiafeng(吴佳峰),et al.Water to water heat transfer on shell-side of trisection helical baffle heat exchangers[J].CIESC Journal(化工学报),2012,63(3):721-727
[12]  Cao Xing(曹兴).Theoretical analysis and experimental study of shell-and-tube heat exchanger with continuous helical baffles and overlapped helical baffles[D].Jinan:Shandong University,2012
[13]  Yakhot V,Orszag S A.Renormalization group analysis of turbulence(Ⅰ):Basic theory[J].Journal of Scientific Computing,1986,1(1):3-51
[14]  Yakhot V,Smith L.The renormalization group,the ε-expansion and derivation of turbulence models[J].Journal of Scientific Computing,1992,7(1):35-61
[15]  Tao Wenquan(陶文铨).Numerical Heat Transfer(数值传热学)[M].2nd ed.Xi'an:Xi'an Jiaotong University Press,2001:1-6
[16]  Xie Gongnan(谢公南),Peng Botao(彭波涛),Chen Qiuyang(陈秋炀),et al.Experimental study and prediction of pressure drop and heat transfer in shell-side of tube-and-shell heat exchangers[J].Proceedings of the CSEE(中国电机工程学报),2006,26(21):104-108
[17]  Kays W M,London A L.Compact Heat Exchangers[M].New York:McGraw-Hill,1984
[18]  Kim M S,Lee K S,Song S.Effects of pass arrangement and optimization of design parameters on the thermal performance of a multi-pass heat exchanger[J].International Journal of Heat and Fluid Flow,2008,29(1):352-363

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