教師資料查詢 | 類別: 期刊論文 | 教師: 林國賡 Lin, Gwo-geng (瀏覽個人網頁)

標題:Improvement in Device Performance of Power-Law Fluids in Double-pass Concentric Circular Heat Exchangers
學年103
學期2
出版(發表)日期2015/07/01
作品名稱Improvement in Device Performance of Power-Law Fluids in Double-pass Concentric Circular Heat Exchangers
作品名稱(其他語言)
著者Ho, Chii-Dong; Lin, Gwo-Geng; Ku, Kaung-Kai; Lin, Cheng-yi
單位
出版者
著錄名稱、卷期、頁數JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 48(7), pp.533-537
摘要Conjugated Graetz problems in considering the heat transfer behavior of power-law fluids flowing through a double-pass concentric circular tube with uniform wall temperature are studied theoretically and experimentally. The analytical solution was obtained using an orthogonal expansion technique in terms of power series. The mathematical formulation of such a heat transfer flow problem is developed assuming fully developed laminar velocity distribution in both inner and annular channels with ignoring axial conduction. The theoretical predictions show that the outlet temperature and average Nusselt number decrease with decreasing power-law index. A qualitative agreement is achieved between the analytical solutions and the experimental results. Comparisons made between the results from the double-pass concentric circular heat exchanger and those of a single pass (open conduit) were presented graphically. Considerable improvement in heat transfer is obtainable by employing double-pass devices instead of using single-pass ones. The effect of power-law index on the heat-transfer efficiency enhancement of the double-pass device has also been discussed.
關鍵字Shear Thinning Fluid;Power-Law Fluids;Concentric Circular Heat Exchanger;Conjugated Graetz Problem;Orthogonal Expansion Technique
語言英文
ISSN0021-9592
期刊性質國外
收錄於SCI;EI;
產學合作
通訊作者Ho, Chii-Dong
審稿制度
國別日本
公開徵稿
出版型式,電子版
相關連結
Google+ 推薦功能,讓全世界都能看到您的推薦!