Recycle Effect on Heat-Transfer Efficiency Improvement in a Double-Pass Parallel-Plate Heat Exchanger under Uniform Wall Fluxes
學年 97
學期 1
出版（發表）日期 2008-12-01
作品名稱 Recycle Effect on Heat-Transfer Efficiency Improvement in a Double-Pass Parallel-Plate Heat Exchanger under Uniform Wall Fluxes
作品名稱（其他語言）
著者 Ho, Chii-dong; Tu, Jr-wei; Chuang, Yu-jui; Chuang, Ching-jung
單位 淡江大學化學工程與材料工程學系
出版者
著錄名稱、卷期、頁數 International Communications in Heat and Mass Transfer 35(10), pp.1344-1349
摘要 The recycle concept was applied to a double-pass parallel-plate heat exchanger under uniform wall fluxes to enhance the device performance improvement. The mathematical statement of the conjugated Graetz problem was developed theoretically and the analytical solution was obtained by using an eigenfunction expansion in terms of power series for the homogeneous part and an asymptotic solution for the inhomogeneous part. The theoretical predictions of wall temperature and average Nusselt numbers are represented graphically with Graetz number and impermeable-sheet location as parameters. A substantial heat-transfer efficiency improvement is achieved by employing such a recyclic device with suitable adjustments of the impermeable-sheet position and recycle ratio, instead of using the single-pass device. The results indicate that the recyclic operation can effectively enhance the heat transfer efficiency, especially when the recyclic device was operated in large Graetz number.
關鍵字 Heat transfer;Recycle effect;Double-pass Operation;Uniform wall fluxes
語言 en
ISSN 0735-1933 1879-0178
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 否
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
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