出版日期：2009-07-01 00:00:00

著者：何啟東; Ho, Chii-dong; Hsien, Tsung-lieh;張煖; Chang, Hsuan; 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：Elsevier

著錄名稱、卷期、頁數：International Communications in Heat and Mass Transfer 36(6), pp.579-584

摘要：The effects of external recycle at the ends on double-pass laminar countercurrent heat exchangers with sinusoidal heat flux distribution are investigated analytically by setting a general solution to separate the original boundary value problem into a partial differential equation, which is solved by Frobenius method, and an ordinary differential equation. Analytical results show that recycle effects enhance the heat-transfer efficiency due to that the desirable effect of forced-convection increment has more influence than the undesirable effect of the heat-transfer driving-force decrement, and hence the forced-convection increment by increasing the recycle ratio leads to improved device performance in heat-transfer rate as compared with that in the single-pass operation (without an impermeable sheet inserted).

關鍵字：Sinusoidal heat fluxes; Heat transfer; Recycle effect; Double-pass operation; Concentric heat exchanger

語言：en

ISSN：0735-1933

期刊性質：國外

收錄於：SCI EI