教師資料查詢 | 類別: 期刊論文 | 教師: 何啟東 Ho, Chii-dong (瀏覽個人網頁)

標題:Double-pass flow heat transfer in a circular conduit by inserting a concentric tube for improved performance
學年93
學期2
出版(發表)日期2005/02/01
作品名稱Double-pass flow heat transfer in a circular conduit by inserting a concentric tube for improved performance
作品名稱(其他語言)
著者Ho, Chii-dong; 葉和明; Yeh, Ho-ming; Yang, Wen-yi
單位淡江大學化學工程與材料工程學系
出版者Taylor & Francis
著錄名稱、卷期、頁數Chemical engineering communications 192(2), pp.237-255
摘要A double-flow laminar counterflow heat exchanger device is an open circular tube divided into two subchannels with uniform wall temperature, inserted in parallel into an impermeable, resistless tube. Heat transfer performance was considerably improved, compared with an open circular tube (without an impermeable, resistless tube inserted), using an orthogonal expansion technique with eigenfunction power series expansion. The impermeable tube location can effectively enhance the heat transfer efficiency, leading to improved performance. The dimensionless outlet temperature and average Nusselt number decrease with increasing Graetz number (Gz) as the subchannel thickness ratio (κ) moves away from 0.5, especially for κ > 0.5, for flow pattern A. Heat transfer rate improvement occurs for flow pattern B for any Graetz number with κ < 0.6. The power consumption increment is also delineated.
關鍵字Concentric tubes;Double-flow operations;Heat transfer
語言英文
ISSN0098-6445
期刊性質國外
收錄於
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
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