https://scholars.lib.ntu.edu.tw/handle/123456789/407857
標題: | Second-law analysis of vapor condensation of FC-22 in film flows within horizontal tubes | 作者: | Lin W.W. Lee D.J. Peng X.F. |
關鍵字: | Cooling tempearature;Film condensation;Optimal Reynolds number;Second-law | 公開日期: | 2001 | 卷: | 32 | 期: | 1 | 起(迄)頁: | 89-94 | 來源出版物: | Journal of the Chinese Institute of Chemical Engineers | 摘要: | This study performed second-law analysis on saturated FC - 22 vapor flowing through and condensed in horizontal cooling tubes. An optimum Reynolds number existed over the parametric range investigated for the single tube case at which the entropy generated at a minimum rate. For the multi-tube cases, on the other hand, no optimal Reynolds number was identified subject to constant surface-area constraint. Furthermore, there was an optimal cooling temperature that generated a minimum of entropy for a given duty. The present phase-change system was inherently different in thermodynamic performance from the single-phase convective system intensively discussed in literature works. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407857 | ISSN: | 03681653 |
顯示於: | 化學工程學系 |
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