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Simulation of three-stage operating temperature for supersaturation water-based condensational growth tube

文献类型：期刊论文

作者Bian, Jiejie2,3; Gui, Huaqiao1,2; Xie, Zhibo1,4; Yu, Tongzhu1,2; Wei, Xiuli1,2; Wang, Wenyu2,3; Liu, Jianguo1,2,3,4
刊名JOURNAL OF ENVIRONMENTAL SCIENCES
出版日期2020-04-01
卷号90
关键词Operating temperature Supersaturation profile Flow rate Minimum activation size Temperature difference
ISSN号1001-0742
DOI10.1016/j.jes.2019.12.007
通讯作者Yu, Tongzhu(tzyu@aiofm.ac.cn) ; Liu, Jianguo(jgliu@aiofm.ac.cn)
英文摘要In order to realize accurate dynamic control of supersaturation and to study condensation growth characteristics of nanoparticles through different levels of supersaturation, a series of parametric analyses and systematic comparisons between two-stage and three-stage operating temperature designs were simulated with COMSOL Multiphysics. The simulation results showed that the three-stage operating temperature did not change peak supersaturation compared with two operating temperatures, and the three-stage operating temperature was superior in decreasing the amount of water vapor and the temperature, thus lowering particle loss and variation in detection and collection. The peak supersaturation level increased by 0.3 as the flow rate increased from 0.6 to 2.0 L/min, but the supersaturation peak moved from 0.0027 z0 to 0.08 z0 (i.e., the growth time and the final size decreased by 40%). Peak supersaturation increased as the temperature difference increased or the temperature difference window was shifting left, and minimumactivation size decreased. Shifting the 70 degrees C temperature difference window from 9 degrees C, 79 degrees C-1 degrees C, 71 degrees C for the condenser and initiator temperatures resulted in peak supersaturation in the centerline being above 5.8, and the activation size changed as low as 1 nm. Experiments with flow rates varying by a factor of 2.5 (from 0.6 to 1.5 L/min) resulted in a final size decrease of 43% (from 3.2 to 1.8 mm), and experimental results of outlet particle size distributions were equivalent with theoretical analysis as the operating temperature was changed. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
WOS关键词PARTICLE COUNTER ; LAMINAR-FLOW ; ULTRAFINE ; EFFICIENCY
资助项目Natural Science Foundation of China[91544218] ; National Key Research and Development Program of China[2016YFC0201001] ; Science and Technological Fund of Anhui Province for Outstanding Youth[1808085J19] ; Science and Technological Fund of Anhui Province[1908085MD114] ; CASHIPS Director's Fund[YZJJ2019QN1]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000513920600026
出版者SCIENCE PRESS
资助机构Natural Science Foundation of China ; National Key Research and Development Program of China ; Science and Technological Fund of Anhui Province for Outstanding Youth ; Science and Technological Fund of Anhui Province ; CASHIPS Director's Fund
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/103913]  
专题中国科学院合肥物质科学研究院
通讯作者Yu, Tongzhu; Liu, Jianguo
作者单位1.Chinese Acad Sci, CAS Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
3.Univ Sci & Technol China, Hefei 230026, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Bian, Jiejie,Gui, Huaqiao,Xie, Zhibo,et al. Simulation of three-stage operating temperature for supersaturation water-based condensational growth tube[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2020,90.
APA Bian, Jiejie.,Gui, Huaqiao.,Xie, Zhibo.,Yu, Tongzhu.,Wei, Xiuli.,...&Liu, Jianguo.(2020).Simulation of three-stage operating temperature for supersaturation water-based condensational growth tube.JOURNAL OF ENVIRONMENTAL SCIENCES,90.
MLA Bian, Jiejie,et al."Simulation of three-stage operating temperature for supersaturation water-based condensational growth tube".JOURNAL OF ENVIRONMENTAL SCIENCES 90(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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