期刊論文
| 學年 | 91 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2002-08-01 |
| 作品名稱 | Improvement in Performance of Multi-Pass Laminar Counterflow Heat Exchangers with External Refluxes |
| 作品名稱（其他語言） | |
| 著者 | Chii-Dong Ho; Ho-Ming Yeh; Yu-Chuan Tsai |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | International Journal of Heat and Mass Transfer 45(17), pp.3529-3547 |
| 摘要 | A study on improvement in performance of multi-pass rectangular heat exchangers with uniform wall temperature and with external refluxes has been carried out under counterflow operations. An orthogonal expansion technique for solving such a conjugated Graetz problem is developed and applied to investigate a substantially improving heat transfer. A description of the average Nusselt number and the outlet dimensionless temperature is given. It is shown that for asymptotic average Nusselt numbers exit in counterflow as in single-flow operations. Numerical values of asymptotic average Nusselt numbers are reported for a wide range of Graetz numbers. Comparisons of analytical results are made with single-flow operations of the same size (without sheets inserted and without recycle). Considerable improvement in the heat transfer rate for large Graetz numbers is obtainable by introducing the recycle-effect concept in designing such double-pass operations. The effect of sheet location on the enhancement of heat transfer efficiency as well as on the increment of power consumption has been also discussed. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0017-9310 1879-2189 |
| 期刊性質 | 國外 |
| 收錄於 | |
| 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 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/106115 ) |