出版日期：2009-01-15 00:00:00

著者：Ho, Chii-Dong; Tu, Jr-Wei; Yang, Chih-Ming

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：International Journal of Heat and Mass Transfer 52(1-2), pp.45-55

摘要：An analytical method is proposed to predict the temperature distribution and local Nusselt number for laminar flow in a double-pass countercurrent heat exchanger with sinusoidal heat flux distribution. A design of inserting in parallel an impermeable barrier to divide an open conduit into two subchannels for conducting double-pass operations, resulting in substantially improved the heat transfer rate, has been evaluated theoretically in the fully developed region. Comparison with the theoretical results shows that the heat-transfer efficiency improvement for double-pass concentric circular heat exchangers is generally higher than those in the single-pass operations without an impermeable barrier inserted. The influences of the impermeable-barrier location on the heat-transfer efficiency improvement and power consumption increment, as indicated from theoretical predictions, can be used to determine the economical feasibility in operating double-pass devices.

關鍵字：Sinusoidal heat fluxes;Conjugated Graetz problems;Double-pass operation;Concentric circular heat exchanger

語言：en

ISSN：0017-9310 1879-2189

期刊性質：國外

收錄於：SCI EI

通訊作者：Ho, Chii-Dong

審稿制度：否

國別：GBR

出版型式：電子版,紙本