全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

材料物性对抛物线形波纹基底上冷却液膜流动传热特性的影响

DOI: 10.13334/j.0258-8013.pcsee.2014.35.008, PP. 6311-6318

Keywords: 不同材料,波纹基底,冷却液膜,流动传热特性,数值模拟

Full-Text   Cite this paper   Add to My Lib

Abstract:

为分析比较不同材质基底上冷却液膜的流动传热特性,提出一种抛物线形波纹基底,并且分析了不同材料物性对这种新的基底上冷却液膜流动传热特性的影响。利用FLUENT软件,对选用不同材料基底时液膜的温度场进行数值模拟;采用选取特征点的方法,得到了各特征点上的速度分布,漩涡强度,熵,雷诺数(Re),流函数,以及焓等物理参数并绘制相应分布图;结合上述数值摸拟和各分布图,对陶瓷、铝和玻璃钢材质上液膜的流动传热特性进行对比分析。结果表明,不同的材料物性对新波纹基底上冷却液膜的流动传热特性有不同程度的影响,在上述3种材料中换热效果最好的为陶瓷。

References

[1]  叶学民,阎维平.切应力作用下层流饱和蒸发降膜的传热特性[J].中国电机工程学报,2007,27(11):68-72.Ye Xuemin,Yan Weiping.Heat transfer of laminar saturated falling films under interfacial shear[J].Proceedings of the CSEE,2007,27(11):68-72(in Chinese).
[2]  徐平.冷却塔塑料淋水填料热力及阻力特性的分析[J].电力建设,1993,14(12):9-13.Xu Ping.The analysis of cooling tower plastic packing heat and resistance characteristics[J].Electric Power Construction,1993,14(12):9-13(in Chinese).
[3]  高福东,孙奉仲,王凯.电厂冷却塔填料的发展与研究[J].电站系统工程,2007,23(5):7-10.Gao Fudong,Sun Fengzhong,Wang Kai.Development and study of cooling tower fill in power plant[J].Power System Engineering:2007,23(5):7-10(in Chinese).
[4]  Mirksy G,Haggerty D.Developments in cooling tower components[J].Hydrocarbon Engineering,2000,28(10):75-78.
[5]  Burger R.Cooling Tower fill the neglected moneymaker [J].Hydrocarbon Processing,2000,30(5):65-68.
[6]  Donald Zelek.Guidelines for selecting the proper film fill[J].CTI Journal,2007,28(6):28-34.
[7]  刘东兴,周亚素.冷却塔淋水填料的研究进展[J].建筑热能通风空调,2008,27(5):7-10.Liu Dongxing,Zhou Yasu.Development of cooling tower packing[J].Building Energy & Environment,2008,27(5):7-10(in Chinese).
[8]  Barile R G,Dengler J L,Hertwig T A.Performance and design of a turbulent bed cooling tower[J].AICHE Symposium Series,1974,70(138):154-162.
[9]  Dessouky H.Thermal and hydraulic performance of a three phase fluidized bed cooling tower[J].Experimental Thermal and Fluid Science,1993,6(4):417-426.
[10]  Bedekar S,Nithiarasu P,Seethatamu K.Experimental investigation of the performance of a counter flow packed bed mechanical cooling tower[J].Energy,1998,23(11):943-947.
[11]  Goshayshi H,Missenden J.The investigation of cooling tower packing in various arrangements[J].Applied Thermal Engineering,2000,20(1):69-80.
[12]  Milosavljevic N,Heikkilä P.A comprehensive approach to cooling tower design[J].Applied Thermal Engineering,2001,21(9):899-915.
[13]  赵元宾,杨志,高明,等.填料非均匀布置对大型冷却塔冷却性能的影响[J].中国电机工程学报,2013,33(20):96-103.Zhao Yuanbin,Yang Zhi,Gao Ming,et al.Impact of fill non-uniform layout on large-scale cooling tower cooling performance [J].Proceedings of the CSEE,2013,33(20):96-103(in Chinese).
[14]  李相鹏,陈冰冰,高增梁.规整填料表面液膜流动特性的数值模拟[J].化工学报,2013:64(6):1925-1933.Li Xiangpeng,Chen Bingbing,Gao Zengliang.Numerical simulation on hydraulic characteristics of liquid film on structured packing surface[J].CIESC Journal,2013:64(6):1925-1933(in Chinese).
[15]  袁猛.复杂表面液膜流动统计特性研究[D].上海:华东理工大学,2012.Yuan Meng.Study on statistical characteristics of liquid film flows over complex surfaces[D].Shanghai:East China University of Science and Technology,2012(in Chinese).
[16]  邢修三.物理熵、信息熵及其演化方程[J].中国科学,2001,31(1) :77-84.Xing Xiusan.Physical entropy,entropy and its evolution equation[J].Science in China,2001,31(1):77-84(in Chinese).
[17]  赵振国.冷却塔[M].北京:中国水利水电出版社,1996:373.Zhao Zhenguo.Cooling tower[M].Beijing:China Water Power Press,1996:373(in Chinese).
[18]  张超.自然通风湿式冷却塔流场及热力场数值模拟及应用研究[D].北京:清华大学,2010.Zhang Chao.The uumerical simulation and the application study of the flow field and the thermal field in a natural draft wet cooling tower[D].Beijing:Tsinghua University,2010(in Chinese).
[19]  程友良,樊小朝.液膜流动传热稳定性综述[J].应用能源技术,2009,12(144):1-4.Cheng Youliang,Fan Xiaochao.Summary of the stability of liquid film flow and heat transfer[J].Applied Energy Technology,2009,12(144):1-4(in Chinese).
[20]  韩富强.冷却塔中沟槽填料上冷却液膜的流动和传热特性研究[D].保定:华北电力大学,2013.Han Fuqiang.Research on the flow and heat transfer characteristics of the cooling liquid film on the trench fill in the cooling tower of power plant[D].Baoding:North China Electric Power University,2013(in Chinese).
[21]  田英.分层液膜流动传热特性及影响因素分析[D].保定:华北电力大学,2008.Tian Ying.The characteristics of flow and heat transfer and the factors analysis in stratified liquid film[D].Baoding:North China Electric Power University,2008(in Chinese).
[22]  李欣.波动液膜流动传热特性及稳定性研究[D].保定:华北电力,2005.Li Xin.The flow and heat transfer characteristic and stability research on wavy liquid film[D].Baoding:North China Electric Power University,2005(in Chinese).
[23]  程友良,叶学民,阎维平.非线性表面张力对饱和液膜传热稳定性的影响[J].华北电力大学学报,2002,29(2):50-53.Cheng You liang,Ye Xuemin,Yan Weiping.Effect of nonlinear surface tension on heat transfer stability in saturated liquid film[J].Journal of North China Electric Power University,2002,29(2):50-53(in Chinese).

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133