@article{(Open Science Index):https://publications.waset.org/pdf/3520, title = {Entropy Generation Analysis of Free Convection Film Condensation on a Vertical Ellipsoid with Variable Wall Temperature}, author = {Sheng-An Yang and Ren-Yi Hung and Ying-Yi Ho}, country = {}, institution = {}, abstract = {This paper aims to perform the second law analysis of thermodynamics on the laminar film condensation of pure saturated vapor flowing in the direction of gravity on an ellipsoid with variable wall temperature. The analysis provides us understanding how the geometric parameter- ellipticity and non-isothermal wall temperature variation amplitude “A." affect entropy generation during film-wise condensation heat transfer process. To understand of which irreversibility involved in this condensation process, we derived an expression for the entropy generation number in terms of ellipticity and A. The result indicates that entropy generation increases with ellipticity. Furthermore, the irreversibility due to finite temperature difference heat transfer dominates over that due to condensate film flow friction and the local entropy generation rate decreases with increasing A in the upper half of ellipsoid. Meanwhile, the local entropy generation rate enhances with A around the rear lower half of ellipsoid.}, journal = {International Journal of Mechanical and Mechatronics Engineering}, volume = {1}, number = {9}, year = {2007}, pages = {472 - 477}, ee = {https://publications.waset.org/pdf/3520}, url = {https://publications.waset.org/vol/9}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 9, 2007}, }