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Heat transfer of conjugated Graetz problems with laminar counterflow in double-pass concentric circular heat exchangers

類別:期刊論文

學年 / 學期:94-1

出版日期:2005-10-01 00:00:00

著者:Ho, Chii-dong; Yang, Wen-yi

單位:淡江大學化學工程與材料工程學系

出版者:Elsevier

著錄名稱、卷期、頁數:International journal of heat and mass transfer 48(21-22), pp.4474-4480

摘要:A device of external recycle at the ends of double-pass concentric circular heat exchangers with uniform wall temperature, resulting in substantially improving the heat transfer, has been designed and studied theoretically. The theoretical analysis on heat transfer efficiency improvement has been developed using orthogonal expansion technique in power series. The analytical results are also represented graphically and compared with that in an open conduit (without an impermeable plate inserted and without recycle). Considerable improvement in heat transfer is obtainable by employing the external recycle at both ends with a suitable adjustment of the impermeable-sheet position and recycle ratio, instead of using an open conduit.

關鍵字:Heat exchangers;Conjugated Graetz problems;Double-pass operations;Concentric circular tubes;External recycle

語言:en

ISSN:1879-2189 0017-9310

期刊性質:國外

收錄於:SCI EI

通訊作者:Ho, Chii-dong

審稿制度:

國別:GBR

出版型式:電子版,紙本