English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 58323/91876 (63%)
造访人次 : 14075686      在线人数 : 91
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻

    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/71810

    题名: Pervaporation Performance Analysis and Prediction-Using a Hybrid Solution-Diffusion and Pore-Flow Model
    作者: Chang, Cheng-liang;Chang, Hsuan;Chang, Yuan-cheng
    贡献者: 淡江大學化學工程與材料工程學系
    关键词: Pervaporation;Solution-diffusion model;Pore model;Concentration polarization;Ethanol–water solution
    日期: 2007-01
    上传时间: 2011-10-24 01:44:27 (UTC+8)
    出版者: Amsterdam: Elsevier BV
    摘要: A hybrid mathematic model for pervaporation is proposed which incorporates the concepts of solution-diffusion model and pore model. The model allows performance prediction as well as the establishment of the internal concentration and pressure profiles within the membrane. The model parameters specific to the particular membrane and mixture system are determined using liquid sorption and pervaporation experimental data. The model is experimentally examined using ethanol–water mixtures and poly(dimethyl siloxane)–poly(vinyldiene fluoride) (PDMS–PVDF) composite membranes. The characteristics of flux and separation factor predicted using the model are in fair agreement with the experimental data under various feed concentrations and downstream pressures for different membrane arrangements, including single-layer, reverse single-layer and double-layer PDMS–PVDF composite membranes. Internal profiles of pressure, concentration and component mole fraction can be established using the model. Concentration polarization phenomena for ethanol and water are located at membrane interfaces and vapor–liquid interfaces, respectively. Performances of several different membrane designs are compared using the model.
    關聯: Journal of The Chinese Institute of Chemical Engineers 38(1), pp.43-51
    DOI: 10.1016/j.jcice.2007.01.001
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文


    档案 描述 大小格式浏览次数
    0368-1653_38(1)_p43-51.pdf863KbAdobe PDF305检视/开启



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈