Please wait a minute...
浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (9): 1671-1677    DOI: 10.3785/j.issn.1008-973X.2012.09.019
能源工程     
管内颗粒污垢特性分析
李红霞, 李冠球, 李蔚
浙江大学 能源工程学系,浙江 杭州 310027
Analysis of in tubes particulate fouling characteristic
LI Hong-xia, LI Guan-qiu, LI Wei
Department of Energy Engineering, Zhejiang University, Hangzhou 310027, China
 全文: PDF  HTML
摘要：

为了研究强化管管内污垢特性,选取一组直肋管与光管管内颗粒污垢实验进行了分析,对光管和不同几何设计的3种内置直肋管进行了研究,实验所用颗粒为氧化铝和氧化铁颗粒,平均直径分别为1.75 μm和2.11 μm,质量密度约为1 500 mg/L,实验段的热流密度约为13 kW/m2.实验发现,光管的污垢热阻渐进值最小,其次是型号为30/10,30/20,15/10的直肋管,为此建立了一半理论化模型,对影响颗粒污垢形成的主要因素进行了研究.污垢模型从最常用的质量平衡模型出发,分别讨论了质量传递系数、壁面剪切应力、黏附几率、污垢抗分散强度的影响因素,理论模型与实验结果吻合良好.另外,在进行相应简化后,对实验相应管型进行了二维数值分析，数值分析采用控制容积法和标准kω模型.为解释不同管型在抗垢性能上的差异,讨论了不同管型的近壁面流场分布以及壁面剪切应力对颗粒污垢沉积的影响,发现壁面剪切力越大,污垢热阻值越小,而肋间距是影响壁面剪切力的重要几何参数.数值模拟结果与经验公式和实验结果相比也有合理的偏差.
Abstract:

 In order to discover the fouling characteristic inside enhanced tubes, the particulate fouling tests including one smooth tube and three internal repeated rib tubes with different geometry designs were carried out. Foulant in the particulate fouling tests was aluminum oxide and ferric oxide, which had an average diameter of 1.75 μm and 2.11 μm, respectively. The foulant concentration was about 1500 mg/L and the heat flux in the test section was about 13 kW/m2. The experimental results show that the plane tube has the smallest fouling resistance, and the next is rib tube of product code 30/10, 30/20, 15/10. A semi-theoretical model was developed to investigate the main factors of particulate fouling formation from the fouling tests. The fouling model which started from the mass balance model considered the influences of the mass transfer coefficient, wall shear stress, sticking probability and deposit bond strength factor. The model analysis results fit the experimental data well. After some simplifications, the 2D numerical models for the experimental tubes were established, in which volume-control method and standard k-ω model were used. To explain the diversity of anti-fouling performance in different tubes, the influences of velocity field near wall and wall shear stress to the particulate fouling deposition were also discussed. It is found that that the fouling resistance decreases with the increase of the wall shear stress which is affected by the fin distance. The numerical results had reasonable deviations with the experimental data.
出版日期: 2012-09-01
:  TK 124  
基金资助:

国家科技支撑计划资助项目(2012BAA10B01); 国家自然科学基金资助项目（50976096）.
通讯作者: 李蔚，男，教授，博导.     E-mail: weili96@zju.edu.cn
作者简介: 李红霞（1987-），女，硕士生,从事强化传热、微尺度传热等研究.E-mail:hongxiaeq@126.com
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

李红霞, 李冠球, 李蔚. 管内颗粒污垢特性分析[J]. J4, 2012, 46(9): 1671-1677.

LI Hong-xia, LI Guan-qiu, LI Wei. Analysis of in tubes particulate fouling characteristic. J4, 2012, 46(9): 1671-1677.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.09.019    或    http://www.zjujournals.com/eng/CN/Y2012/V46/I9/1671

［1］ STEINHAGEN R, MULLER S, MAANI K. Problems and costs due to heat exchanger fouling in New Zealand industries［J］. Heat Transfer Engineering, 1993, 14(1): 19-30.
［2］ KERN D Q, SEATON R A. A theoretical analysis of thermal surface fouling ［J］. British Chemical Engineering, 1959, 4: 258-262．
［3］ HASSON D, SHERMAN H, BITON M. Prediction of calcium carbonate scaling rates ［J］. Proceedings 6th International Symposium Fresh Water from the Sea, 1978, 2: 193-199．
［4］ TABOREK J, AOKI T, RITTER R B. Predictive Methods for Fouling Behaviors ［J］. Chemical Engineering Progress, 1972, 68(7): 69-78．
［5］ 全贞花,陈永昌,马重芳.碳酸钙于换热表面结垢的传热与传质模型［J］.中国科学：技术科学,2008,38(5): 773-780．
QUAN Zhenhua, CHEN Yongchang, MA Chongfang. The heat and mass transfer model of calcium carbonate fouling on the heat transfer surface ［J］. Science in China: Technological Science, 2008, 38(5): 773-780．
［6］ XU Z M, WEN X Q, SUN Y Y.Forecasting fouling characteristics of plain tube based on least squaressupport vector machine for regression ［J］. Journal of Chemical Industry and Engineering, 2009, 60(7): 1617-1622．
［7］ KIM N H, WEBB R L. Particulate fouling of water in tubes having a twodimensional roughness geometry ［J］. International Journal of Heat and Mass Transfer, 1991, 34(11): 2727．
［8］ CHAMRA L M, WEBB R L. Modeling liquidside particulate fouling in enhanced tubes ［J］. International Journal of Heat and Mass Transfer, 1994, 37(4): 571-579．
［9］ WATKINSON A P. LOUIS L, BRENT R. Scaling of enhanced heat exchanger tubes ［J］. Chemical Engineering Science, 1974, 52: 558-562．
［10］ LI Wei. Modeling liquidside particulate fouling in internal helicalrib tubes ［J］. Chemical Engineering Science, 2007, 62(16): 4204-4213．
［11］ LI Wei, WEBB R L. Fouling characteristics of internal helicalrib roughness tubes using lowvelocity cooling tower water ［J］. International Journal of Heat and Mass Transfer, 2002, 45: 1685-1691．
［12］ WEBB R L, LI Wei. Fouling in enhanced tubes using cooling tower water: Part I: longterm fouling data ［J］. International Journal of Heat and Mass Transfer, 2000, 43: 3567．
［13］ 刘天庆, 李香琴, 于瑞红. 表面材料性质对生物垢形成过程的影响［J］. 大连理工大学学报, 2002,42(2): 173-179．
LIU Tianqing, LI Xiangqin, YU Reihong, et al. Effect of surface material on biofilm formation ［J］. Journal of Dalian University of Technology, 2002, 42(2): 173-179．
［14］ YOUCEF M, ABDELKADER M, LOUNES O. Adynamic model for milk fouling in a plate heat exchanger ［J］. Applied Mathematical Modeling, 2009, 33: 648-662．
［15］ PAPAVERGOS P G, HEDLEY A B. Particle deposition behavior from turbulent flows ［J］. Chemical Engineering Research and Design, 1984, 62: 275-295．
［16］ KADER B A, YAGLOM A M. Turbulent heat and mass transfer from a wall with parallel roughness ridges ［J］. International Journal of Heat and Mass Transfer, 1977, 20: 345-357．
［17］ WEBB R L, ECKERT E R G, GOLDSTEIN R G. Generalized heat transfer and friction correlations for tubes with repeatedrib roughness ［J］. International Journal of Heat and Mass Transfer, 1971, 15: 180-184．
［18］ WEBB R L, KIM N H. Principles of enhanced heat transfer ［M］. 2nd ed.New York: Taylor & Francis Group, 2004:279295．
［19］ WEBB R L, NARAYANAMURTHY R, THORS P, Heat transfer and friction characteristics of internal helicalrib roughness ［J］. Journal of Heat Transfer, 2000, 122: 134-142．
［20］ RAVIGURURAJAN T S, BERGLES A E, General correlations for pressure drop and heat transfer for singlephase turbulent flow in internally ribbed tubes ［J］. Augmentation of Heat Transfer in Energy Systems, 1985, 52: 9-20．
［21］ GNIELINSKI V. New equations for heat mass transfer in turbulent pipe and channel flows ［J］. International Chemical Engineering, 1976, 16: 359-368．
[1] 汪超, 董飞英, 范利武, 俞自涛, 胡亚才. 盐水冷却塔传热传质特性的实验研究[J]. J4, 2014, 48(4): 666-670.
[2] 肖玉麒,范利武,洪荣华,徐旭,俞自涛,胡亚才. 纳米填料对储能式散热器性能影响的数值研究[J]. J4, 2013, 47(9): 1644-1649.
[3] 曾轶, 洪荣华, 范利武,徐旭, 俞自涛, 胡亚才. 放热流体在多孔渗流水平圆柱外的自然对流[J]. J4, 2013, 47(8): 1463-1469.
[4] 王智科, 孙显东, 郭思璞, 李红霞, 李蔚, 朱华. 微小内螺纹管冷凝实验结果及关联式评价[J]. J4, 2013, 47(2): 293-299.
[5] 黄晨,程乐鸣,周星龙,吴朝刚,周棋,方梦祥,骆仲泱. 大型循环流化床炉内悬吊受热面传热特性[J]. J4, 2012, 46(11): 2128-2132.
[6] 陈伟, 屈利娟, 汪超, 俞自涛, 王靖华. 盐水聚能塔式空气源热泵热水系统性能[J]. J4, 2012, 46(8): 1485-1489.
[7] 郑成航, 程乐鸣, 李涛, 骆仲泱, 倪明江, 岑可法. 多孔介质内低热值气体燃烧及传热数值模拟[J]. J4, 2010, 44(8): 1567-1572.