教師資料查詢 | 類別: 期刊論文 | 教師: 葉和明 Yeh Ho-ming (瀏覽個人網頁)

標題:An analytical study of heat transfer in laminar countercurrent concentric circular tubes with external refluxes
學年91
學期2
出版(發表)日期2003/04/01
作品名稱An analytical study of heat transfer in laminar countercurrent concentric circular tubes with external refluxes
作品名稱(其他語言)
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Kidlington: Pergamon
著錄名稱、卷期、頁數Chemical Engineering Science 58(7), pp.1235-1250
摘要The mathematical formulation of a new device of counterflow heaters or coolers in concentric circular tubes with uniform wall temperature and external refluxes is developed and the analytical solution has been investigated with the use of an orthogonal expansion technique by expanding eigenfunctions in terms of power series. Comparisons of enhancement in heat-transfer efficiency are made with single-pass operations of the same size (without an inner tube inserted). Considerable improvement in the heat-transfer efficiency for large Graetz numbers is obtainable by introducing the recycle-effect concept in designing such double-pass operations. Analytical results show that suitable adjustment of impermeable-sheet location could have a substantially improving the heat-transfer efficiency. The increment of power consumption has been also discussed.
關鍵字Concentric circular tubes;Conjugated Graetz problem;External refluxes;Orthogonal expansion techniques
語言英文
ISSN0009-2509
期刊性質國外
收錄於
產學合作
通訊作者Yang, Wen-yi
審稿制度
國別英國
公開徵稿
出版型式紙本
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