期刊論文
| 學年 | 94 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2006-06-01 |
| 作品名稱 | The recycle effect on the collector efficiency improvement of double-pass sheet-and-tube solar water heaters with external recycle |
| 作品名稱（其他語言） | |
| 著者 | Ho, Chii-dong; Chen, T. C. |
| 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 | Renewable Energy 31(7), pp.953-970 |
| 摘要 | The paper presents a theoretical prediction of the performance of a double-pass sheet-and-tube solar water heater with external recycle and comparison with that of a conventional type collector. Analytical results show that the recycle effect can effectively enhance the collector efficiency compared with that in a single-pass device with the same flow rate. The desirable effect of increasing convective transfer rate and the undesirable effect of reducing heat-transfer driving force are the two conflict effects produced by the recycle operation. It was found that the increment of convective transfer rate by increasing the recycle ratio could generally compensate for the decrement of the temperature difference, leading to improved performance, especially for low flow rate. Also, the collector efficiency increases with increasing collector aspect ratio (i.e. either increasing the tube length or decreasing the number of tube pairs) for a specified collector area and the distance between tubes. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 1879-0682 0960-1481 |
| 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 | 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/987654321/44250 ) |