Conjugated heat transfer in double-pass laminar counterflow concentric-tube heat exchangers with sinusoidal wall fluxes
學年 97
學期 1
出版（發表）日期 2009-01-15
作品名稱 Conjugated heat transfer in double-pass laminar counterflow concentric-tube heat exchangers with sinusoidal wall fluxes
作品名稱（其他語言）
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
產學合作
通訊作者 Ho, Chii-Dong
審稿制度 否
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
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