|Title:||Second-law analysis of vapor condensation of FC-22 in film flows within horizontal tubes||Authors:||Lin W.W.
|Keywords:||Cooling tempearature;Film condensation;Optimal Reynolds number;Second-law||Issue Date:||2001||Journal Volume:||32||Journal Issue:||1||Start page/Pages:||89-94||Source:||Journal of the Chinese Institute of Chemical Engineers||Abstract:||
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.
|Appears in Collections:||化學工程學系|
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