Second law analysis of free convection film condensation on an inclined porous elliptical tube

被引：7
|
作者：
Kuo, Chun-Hsien [1 ]
Hung, Ren Yi [1 ]
Lin, Yung-Ching [1 ]
Yang, Sheng-An [1 ]
机构：
[1] Natl Kaohsiung Univ Appl Sci, Dept Mold & Die Engn, Kaohsiung 807, Taiwan
来源：
INTERNATIONAL JOURNAL OF THERMAL SCIENCES | 2011年 / 50卷 / 07期
关键词：
Second law; Film condensation; Free convection; Elliptical tube; Porous medium; ENTROPY GENERATION; NATURAL-CONVECTION; HORIZONTAL TUBE; SURFACE; CYLINDER; PLATE;
D O I：
10.1016/j.ijthermalsci.2010.12.005
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This paper aims to investigate the entropy generation analysis for the free convection film condensation on an inclined porous elliptical tube. An analytical approach to study the effects of various working parameters, including Rayleigh, Darcy, Brinkman numbers and tilt angles on the entropy generation rate is performed. Although dimensionless heat-transfer coefficient is enhanced with an increase in tilt angles and Rayleigh group parameters, entropy generation number is augmented. Two main irreversible factors-finite-temperature difference heat transfer and condensate film flow friction associated with porous permeability affecting the total entropy generation rate are investigated. (C) 2011 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：1333 / 1338
页数：6
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