教師資料查詢 | 類別: 期刊論文 | 教師: 何啟東 Ho, Chii-dong (瀏覽個人網頁)

標題:Experimental and analytical study of the internal recycle-effect on the heat transfer for the power-law fluid in a double-pass flat-plate heat exchanger with constant wall temperature
學年102
學期1
出版(發表)日期2014/01/01
作品名稱Experimental and analytical study of the internal recycle-effect on the heat transfer for the power-law fluid in a double-pass flat-plate heat exchanger with constant wall temperature
作品名稱(其他語言)
著者Lin, Gwo-Geng; Ho, Chii-Dong; Chen, Yu-Ru
單位
出版者
著錄名稱、卷期、頁數International Communications in Heat and Mass Transfer 50, pp.44–51
摘要A conjugated Graetz problem of the double-pass flat-plate heat exchanger with internal recycle at uniform wall temperature was solved analytically using the orthogonal expansion technique for the power-law fluid. The mathematical formulation was derived for a fully developed laminar flow through the flat-plate channels by ignoring axial conduction and assuming temperature-independent fluid properties. A constant wall temperature, and both the continuous temperature and the same heat flux at the interface of the two adjacent subchannels made by inserting an impermeable sheet in between, were considered as the thermal boundary conditions. Experiments were carried out in order to validate the proposed mathematical formulation and the results can be very satisfactory. It is found that the recycle ratio and the impermeable-sheet position play significant influences on the efficiencies of this double-pass flat-plate heat exchanger. But, if the power consumption is also evaluated, the performance declines for the double-pass heat exchanger with large reflux ratios. The heat-transfer efficiency enhancement for the power-law fluid with a smaller power-law index is found to be less than that with a larger one, however, if both the heat transfer efficiency and the power consumption increment are considered together, the fluid with a smaller index would have a higher performance.
關鍵字Power-law fluids;Orthogonal expansion technique;Double-pass operation;Heat transfer efficiency;Recycle
語言英文
ISSN0735-1933
期刊性質國外
收錄於SCI;EI;
產學合作
通訊作者Lin, Gwo-Geng
審稿制度
國別英國
公開徵稿
出版型式,紙本
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