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An analytical study of laminar counterflow double-pass heat exchangers with external refluxes

類別:期刊論文

學年 / 學期:89-1

出版日期:2000-09-15 00:00:00

著者:Ho, Chii-dong

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 43(18), pp.3263-3274

摘要:.A new device of inserting an insulation sheet or an impermeable sheet with negligible thermal resistance to divide an open duct into two channels with uniform wall temperature and with external refluxes at the ends, resulting in substantially improving the heat transfer, has been studied and investigated by an orthogonal expansion technique. The analytical results are represented graphically and compared with that in an open conduit of the same size without recycle. Considerable improvement in heat transfer is obtainable by employing double-pass operations with an impermeable sheet of negligible thermal resistance instead of using double-pass operations with an insulation sheet inserted and single-pass operations. The effect of sheet location on the enhancement of heat transfer efficiency as well as on the increment of power consumption, has been also discussed.

關鍵字:Conjugated Graetz problems;Orthogonal expansion techniques;Heat transfer;External refluxes

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