教師資料查詢 | 類別: 期刊論文 | 教師: 陳俊成 LUKE CHEN (瀏覽個人網頁)

標題:Permeate flux enhancement with a helical wired concentric tube in air gap membrane distillation systems
學年109
學期1
出版(發表)日期2020/10/22
作品名稱Permeate flux enhancement with a helical wired concentric tube in air gap membrane distillation systems
作品名稱(其他語言)
著者Chii-Dong Ho; Luke Chen; Kun-Yi Wu; Chi-Hsiang Ni; Thiam Leng Chew
單位
出版者
著錄名稱、卷期、頁數Desalination and Water Treatment 202, p.150–168
摘要Temperature polarization plays an important role in determining the permeate flux of the membrane distillation in an air gap membrane distillation (AGMD) module. This study aimed to increase the pure water productivity of saline water desalination by applying helical wire on the circumference of a concentric-tube AGMD module to reduce the temperature polarization occurring on the smooth annulus tube of an AGMD module with a normal concentric-tube. Modeling equations of heat and mass transfer in the new design of the AGMD device with helical wire winding on the annulus of a concentric tube have been investigated theoretically and experimentally. The mathematical model proposed in this study was used to correlate a simplified equation for estimating the heat transfer
coefficient and to predict the permeate flux accordingly. The effects of various operation parameters, including the feed saline water temperature, feed volumetric flow rate, air gap thickness, and helical wire pitch, on the pure water productivity were also delineated. The permeate flux enhancement for helical wire in the AGMD module could provide the maximum relative increment of up to 31.1%. The temperature polarization coefficient found in this study is ranging from 0.5527 to 0.5451 for different hot feed temperature and flow rate, respectively. An optimal helical wire module was assessed when considering both permeate flux enhancement and energy utilization effectiveness.
關鍵字Helical wired annulus;Desalination;Concentric-tube AGMD;Permeate flux enhancement
語言英文
ISSN1944-3986
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別英國
公開徵稿
出版型式,電子版,紙本
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