Analytical and experimental studies for power-law fluids in a double-pass parallel-plate heat exchanger under asymmetric isotherm conditions
學年 105
學期 2
出版（發表）日期 2017-03-11
作品名稱 Analytical and experimental studies for power-law fluids in a double-pass parallel-plate heat exchanger under asymmetric isotherm conditions
作品名稱（其他語言）
著者 Chii-Dong Ho; Gwo-Geng Lin; Cheng-Yi Lin; Li-Yang Jen
單位
出版者
著錄名稱、卷期、頁數 International Journal of Heat and Mass Transfer 106, p.1242-1250
摘要 The double-pass parallel-plate heat exchanger under asymmetric isotherm conditions referred to conjugated Graetz problem was proposed to enhance the thermal performance and investigated theoretically and experimentally. The analytical solutions were obtained using the separation of variables, superposition principle and an orthogonal expansion technique in terms of power series. The dependence of the average Nusselt number on the Graetz number and power-law index was formulated in a simplified expression. The theoretical predictions show that the power-law fluids in such a double-pass operation come up with the considerable heat-transfer efficiency improvement as compared with those in an open conduit (without an impermeable resistless sheet inserted), especially when the double-pass device was operated in larger Graetz numbers. This work shows that the good agreement was obtained between the experimental results and theoretical predictions. The effects of the ratio of asymmetric wall temperatures, impermeable-sheet position and power-law index on both the device performance enhancement and power consumption increment have also been presented.
關鍵字 Power-law fluids;Conjugated Graetz problems;Asymmetric wall condition;Double-pass operation;Performance improvement
語言 en
ISSN 0017-9310
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 Chii-Dong Ho
審稿制度 否
國別 GBR
公開徵稿
出版型式 ,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/109751 )

SDGS 潔淨水與衛生,可負擔的潔淨能源