DOI: 10.1016/j.watres.2017.12.066
Scopus记录号: 2-s2.0-85039870006
论文题名: Detailed modeling and simulation of an out-in configuration vacuum membrane distillation process
作者: Kim Y.-D. ; Kim Y.-B. ; Woo S.-Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 132 起始页码: 23
结束页码: 33
语种: 英语
英文关键词: Desalination
; Hollow-fiber VMD
; Modeling
; Pressure build-up
; Shell-side feed
; Simulation
Scopus关键词: Desalination
; Distillation
; Models
; Seawater
; Hollow fiber
; Mathematical formulation
; Pressure build up
; Seawater desalination
; Shell-side
; Simulation
; Theoretical modeling
; Vacuum membrane distillation
; Fibers
; salt water
; sea water
; desalination
; distillation
; experimental study
; high temperature
; mathematics
; membrane
; modeling
; numerical method
; permeability
; pressure
; salinity
; simulation
; theoretical study
; velocity
; water treatment
; water vapor
; Article
; boundary layer
; comparative study
; desalination
; distillation
; heat transfer
; length
; mathematical model
; membrane
; membrane permeability
; prediction
; pressure gradient
; priority journal
; salinity
; simulation
; temperature
; theoretical model
; vacuum
; vapor pressure
; velocity
; water vapor
; artificial membrane
; computer simulation
; devices
; distillation
; pressure
; procedures
; theoretical model
; vacuum
; water management
; Computer Simulation
; Distillation
; Membranes, Artificial
; Models, Theoretical
; Pressure
; Salinity
; Seawater
; Steam
; Vacuum
; Water Purification
英文摘要: In this study, a detailed rigorous theoretical model was developed to predict the transmembrane flux of a shell-and-tube type vacuum membrane distillation (VMD) module for seawater desalination. Two modes of operation are used for performing the VMD, namely lumen-side feed (in-out) configuration and shell-side feed (out-in) configuration. In this study, detailed mathematical formulations are derived for an out-in configuration that is commonly used in seawater desalination applications. Experimental results and model predictions for mean permeate flux are compared and shown to be in good agreement. The results indicate that although the simple VMD model that maintains a constant permeate pressure is easy to use, it is likely to significantly overestimate the mean permeate flux when compared to the detailed model that considers the pressure build-up in the fiber lumen. The pressure build-up of water vapor in the fiber lumen is identified as the crucial factor that significantly affects the VMD performance because it directly reduces the driving force for vapor permeation through the membrane pores. Additionally, its effect is more pronounced at longer fiber lengths and higher permeate fluxes, and this is achieved at higher feed temperatures and velocities and at lower feed salinities. In conclusion, the results of the study are extremely important in module design for the practical applications of VMD processes. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112992
Appears in Collections: 气候减缓与适应
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作者单位: Department of Mechanical Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, South Korea; Department of Mechanical Design Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, South Korea
Recommended Citation:
Kim Y.-D.,Kim Y.-B.,Woo S.-Y.. Detailed modeling and simulation of an out-in configuration vacuum membrane distillation process[J]. Water Research,2018-01-01,132