[1]于燕,徐俊超,张,等.生长管中过饱和度在不同构建方式下的分布特性[J].东南大学学报(自然科学版),2016,46(4):733-738.[doi:10.3969/j.issn.1001-0505.2016.04.010]
 Yu Yan,Xu Junchao,Zhang Jun,et al.Distribution characteristics of supersaturation from different creating methods in growth tube[J].Journal of Southeast University (Natural Science Edition),2016,46(4):733-738.[doi:10.3969/j.issn.1001-0505.2016.04.010]
点击复制

生长管中过饱和度在不同构建方式下的分布特性()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第4期
页码:
733-738
栏目:
能源与动力工程
出版日期:
2016-07-20

文章信息/Info

Title:
Distribution characteristics of supersaturation from different creating methods in growth tube
作者:
于燕徐俊超钟辉
东南大学太阳能技术研究中心, 南京 210096
Author(s):
Yu Yan Xu Junchao Zhang Jun Meng Qiang Zhong Hui
Solar Energy Technology Research Center, Southeast University, Nanjing 210096, China
关键词:
过饱和度 传热传质 生长管 水汽相变
Keywords:
supersaturation heat and mass transfer growth tube vapor phase transition
分类号:
TK16
DOI:
10.3969/j.issn.1001-0505.2016.04.010
摘要:
为了研究水汽相变中不同构建方式形成的细颗粒长大所需的过饱和环境,利用变物性参数传热传质模型对生长管中过饱和度水平进行了预测,并评价了2种过饱和构建方式:低温饱和气流与高温热水相接触(方式1);高温饱和气流与低温冷水相接触(方式2).同时分析了进气温度、管壁水温度、进气流速和压力对2种构建方式下所得过饱和度的影响.结果表明:变物性与定物性参数下预测过饱和水平有一定的差异性,最大差异性体现在生长管中心线处;方式2获得的过饱和分布较为均匀;气流与水温差较低时,方式1所得平均过饱和度大;温差较高时,方式2所得平均过饱和度大;温差相同时,较低的温度水平更有利于提高生长管中过饱和水平;压力和进气流速的增加有利于生长管过饱和水平均匀化.
Abstract:
To study the supersaturation environment for fine particle enlargement in vapor phase transition, which is formed from different creating methods, the supersaturation level is predicted in the growth tube by the heat and mass transfer model with variable physical parameters. Two methods that saturated cooled air flow meets with warm water(method 1)and saturated warm air flow meets with cooled water(method 2)are estimated. The influences of the inlet flow temperature, the wall water temperature, the inlet flow rate and the pressure on the supersaturation by the creating methods are analyzed. The results demonstrate that there is a difference in the prediction of supersaturation level with variable and constant physical parameters, and the maximum difference is in the center of the growth tube. The supersaturation distribution obtained from method 2 is more uniform. With a small temperature difference between the inlet flow and the wall water, the average degree of the supersaturation obtained from method 1 is higher. With a large temperature difference, the average degree of the supersaturation obtained from method 2 is higher. With an equal temperature difference, low temperature is positive to promote the supersaturation level in the growth tube. The increase of the pressure and the inlet flow rate is in favor of homogenization of the supersaturation level in the growth tube.

参考文献/References:

[1] 徐俊超,张军,于燕,等. 细颗粒长大特性的直接测量[J]. 东南大学学报(自然科学版),2016,46(1):70-75.
  Xu Junchao,Zhang Jun,Yu Yan,et al. Direct measurement of fine particles growth characteristics[J]. Journal of Southeast University(Natural Science Edition), 2016, 46(1):70-75.(in Chinese)
[2] Xu J C, Zhang J, Yu Y, et al. Characteristics of vapor condensation on coal-fired fine particles [J]. Energy & Fuels, 2016, 30(3):1822-1828. DOI:10.1021/acs.energyfuels.5b02200.
[3] 袁竹林, 凡凤仙, 姚刚, 等. 声波对悬浮PM2.5作用的数值模拟与实验研究[J]. 燃烧科学与技术, 2005,11(4): 298-302. DOI:10.3321/j.issn:1006-8740.2005.04.002.
  Yuan Zhulin, Fan Fengxian, Yao Gang, et al. Study of sound wave effect on the PM2.5 suspended in the air by numerical simulation and experiments[J]. Journal of Combustion Science and Technology, 2005, 11(4): 298-302. DOI:10.3321/j.issn:1006-8740.2005.04.002.(in Chinese)
[4] 竹涛, 陈锐, 王晓佳, 等. 电凝并技术脱除PM2.5的研究现状及发展方向[J]. 洁净煤技术, 2015,21(2): 6-9. DOI:10.13226/j.issn.1006-6772.2015.02.002.
  Zhu Tao, Chen Rui, Wang Xiaojia, et al. Research status and development direction of electric agglomeration technology for PM2.5 removal[J]. Clean Coal Technology, 2015, 21(2):6-9. DOI:10.13226/j.issn.1006-6772.2015.02.002.(in Chinese)
[5] Vohra V, Heist R H. The flow diffusion nucleation chamber: A quantitative tool for nucleation research[J]. The Journal of Chemical Physics,1996,104(1):382-395. DOI:10.1063/1.470837.
[6] Smorodin V Y, Hopke P K. Condensation activation and nucleation on heterogeneous aerosol nanoparticles[J].The Journal of Physical Chemistry B,2004,108(26):9147-9157.
[7] Collings N, Rongchai K, Symonds J P R. A condensation particle counter insensitive to volatile particles[J].Journal of Aerosol Science, 2014, 73: 27-38. DOI:10.1016/j.jaerosci.2014.03.003.
[8] Hering S V, Stolzenburg M R. A method for particle size amplification by water condensation in a laminar, thermally diffusive flow[J]. Aerosol Science and Technology, 2005, 39(5):428-436. DOI:10.1080/027868290953416.
[9] Tammaro M, Di Natale F, Salluzzo A, et al. Heterogeneous condensation of submicron particles in a growth tube[J]. Chemical Engineering Science, 2012, 74:124-134. DOI:10.1016/j.ces.2012.02.023.
[10] Fisenko S P, Brin A A. Heat and mass transfer and condensation interference in a laminar flow diffusion chamber[J]. International Journal of Heat and Mass Transfer, 2006, 49(5):1004-1014. DOI:10.1016/j.ijheatmasstransfer.2005.09.007.
[11] Cussler E L. Diffusion: Mass transfer in fluid systems[M]. New York:Cambridge University Press,1997:63-69.
[12] Smorodin V Y, Hopke P K. Relationship of heterogeneous nucleation and condensational growth on aerosol nanoparticles[J]. Atmospheric Research, 2006, 82(3):591-604. DOI:10.1016/j.atmosres.2006.02.015.
[13] McDonald J E. Homogeneous nucleation of vapor condensation. Ⅰ. Thermodynamic aspects[J]. Am J Phys, 1962, 30(12):870. DOI:10.1119/1.1941841.
[14] 戴锅生. 传热学[M]. 2版. 北京:高等教育出版社,2011:320.
[15] Reid R C, Prausnitz J M, Sherwood T K. The properties of gases and liquids[M]. New York: McGraw-Hill,1977: 477-507.
[16] Kalikmanov V I. Nucleation theory[M]. Berlin: Springer, 2013:17-41.

相似文献/References:

[1]杜斌,施明恒.太阳能平板降膜再生过程的数值模拟[J].东南大学学报(自然科学版),2005,35(6):903.[doi:10.3969/j.issn.1001-0505.2005.06.016]
 Du Bin,Shi Mingheng.Numerical simulation of heat and mass transfer for solar energy regenerator[J].Journal of Southeast University (Natural Science Edition),2005,35(4):903.[doi:10.3969/j.issn.1001-0505.2005.06.016]
[2]闫俊海,张小松,周斌.单个水滴蒸发过冷过程的特性分析[J].东南大学学报(自然科学版),2012,42(4):664.[doi:10.3969/j.issn.1001-0505.2012.04.017]
 Yan Junhai,Zhang Xiaosong,Zhou Bin.Characteristic analysis of single water droplet in evaporative supercooled process[J].Journal of Southeast University (Natural Science Edition),2012,42(4):664.[doi:10.3969/j.issn.1001-0505.2012.04.017]
[3]朱立平,秦霞,袁竹林,等.丝状颗粒在滚筒横向截面中的传热传质特性[J].东南大学学报(自然科学版),2014,44(4):756.[doi:10.3969/j.issn.1001-0505.2014.04.014]
 Zhu Liping,Qin Xia,Yuan Zhulin,et al.Heat and mass transfer characteristics of filamentous particles in transverse section of rotary dryer[J].Journal of Southeast University (Natural Science Edition),2014,44(4):756.[doi:10.3969/j.issn.1001-0505.2014.04.014]
[4]夏燚,孙立镖,梁彩华,等.具有预凝功能的新型热源塔的构建及模拟[J].东南大学学报(自然科学版),2015,45(6):1108.[doi:10.3969/j.issn.1001-0505.2015.06.015]
 Xia Yi,Sun Libiao,Liang Caihua,et al.Construction and simulation of new-type heat-source tower with pre-condensation function[J].Journal of Southeast University (Natural Science Edition),2015,45(4):1108.[doi:10.3969/j.issn.1001-0505.2015.06.015]
[5]司强,徐国英,张小松.辐射诱导空调系统运行和结露特性实验研究[J].东南大学学报(自然科学版),2018,48(2):213.[doi:10.3969/j.issn.1001-0505.2018.02.004]
 Si Qiang,Xu Guoying,Zhang Xiaosong.Experimental study on performance and condensation characteristics of induction radiant air-conditioning system[J].Journal of Southeast University (Natural Science Edition),2018,48(4):213.[doi:10.3969/j.issn.1001-0505.2018.02.004]
[6]于燕,张军,陈广闯,等.分段数对生长管过饱和环境特征的影响[J].东南大学学报(自然科学版),2018,48(2):226.[doi:10.3969/j.issn.1001-0505.2018.02.006]
 Yu Yan,Zhang Jun,Chen Guangchuang,et al.Effects of sections on characteristics of supersaturation in growth tube[J].Journal of Southeast University (Natural Science Edition),2018,48(4):226.[doi:10.3969/j.issn.1001-0505.2018.02.006]
[7]查小波,张伦,张小松.蒸发冷却冷凝除湿复合新风系统优化[J].东南大学学报(自然科学版),2018,48(4):646.[doi:10.3969/j.issn.1001-0505.2018.04.009]
 Zha Xiaobo,Zhang Lun,Zhang Xiaosong.Optimization of the compound fresh air treatment system of evaporative cooling and condensing dehumidification[J].Journal of Southeast University (Natural Science Edition),2018,48(4):646.[doi:10.3969/j.issn.1001-0505.2018.04.009]

备注/Memo

备注/Memo:
收稿日期: 2016-01-12.
作者简介: 于燕(1990—),女,博士生;张军(联系人),男,博士,教授,博士生导师,junzhang@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51576043)、国家重点基础研究发展计划(973计划)资助项目(2013CB228504).
引用本文: 于燕,徐俊超,张军,等.生长管中过饱和度在不同构建方式下的分布特性[J].东南大学学报:自然科学版,2016,46(4):733-738. DOI:10.3969/j.issn.1001-0505.2016.04.010.
更新日期/Last Update: 2016-07-20