期刊論文
| 學年 | 103 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2015-07-01 |
| 作品名稱 | Improvement in Device Performance of Power-Law Fluids in Double-pass Concentric Circular Heat Exchangers |
| 作品名稱（其他語言） | |
| 著者 | Ho, Chii-Dong; Lin, Gwo-Geng; Ku, Kaung-Kai; Lin, Cheng-yi |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 48(7), p.533-537 |
| 摘要 | Conjugated Graetz problems in considering the heat transfer behavior of power-law fluids flowing through a double-pass concentric circular tube with uniform wall temperature are studied theoretically and experimentally. The analytical solution was obtained using an orthogonal expansion technique in terms of power series. The mathematical formulation of such a heat transfer flow problem is developed assuming fully developed laminar velocity distribution in both inner and annular channels with ignoring axial conduction. The theoretical predictions show that the outlet temperature and average Nusselt number decrease with decreasing power-law index. A qualitative agreement is achieved between the analytical solutions and the experimental results. Comparisons made between the results from the double-pass concentric circular heat exchanger and those of a single pass (open conduit) were presented graphically. Considerable improvement in heat transfer is obtainable by employing double-pass devices instead of using single-pass ones. The effect of power-law index on the heat-transfer efficiency enhancement of the double-pass device has also been discussed. |
| 關鍵字 | Shear Thinning Fluid;Power-Law Fluids;Concentric Circular Heat Exchanger;Conjugated Graetz Problem;Orthogonal Expansion Technique |
| 語言 | en |
| ISSN | 0021-9592 |
| 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 | 是 |
| 國別 | JPN |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/106135 ) |