https://scholars.lib.ntu.edu.tw/handle/123456789/407883
標題: | Boiling stability characteristics of porous surface | 作者: | Lin W.W. Lee D.J. |
公開日期: | 1998 | 卷: | 29 | 期: | 4 | 起(迄)頁: | 287-293 | 來源出版物: | Journal of the Chinese Institute of Chemical Engineers | 摘要: | This study numerically investigates the stability characteristics of methanol boiling on a smooth or a porous-layer coated heated surface. 'Equilibrium heat flux' describes the relative stability between nucleate and film boiling modes over a nonuniformly heated surface with or without a porous layer. In addition, the equal-area criterion is extended from a surface covered entirely by the same boiling curve to a surface having two different boiling curves. Nucleate boiling mode is relatively more stable than that on a smooth surface. Moreover, coating a porous layer on boiling surface not only enhances nucleate boiling, but also introduces a safer operation.This study numerically investigates the stability characteristics of methanol boiling on a smooth or a porous-layer coated heated surface. `Equilibrium heat flux' describes the relative stability between nucleate and film boiling modes over a nonuniformly heated surface with or without a porous layer. In addition, the equal-area criterion is extended from a surface covered entirely by the same boiling curve to a surface having two different boiling curves. Nucleate boiling mode is relatively more stable than that on a smooth surface. Moreover, coating a porous layer on boiling surface not only enhances nucleate boiling, but also introduces a safer operation. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407883 | ISSN: | 03681653 |
顯示於: | 化學工程學系 |
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