Turbulent Film Condensation on a Horizontal Elliptical Tube with Variable Wall Temperature

Authors

Yan-Ting Lin, Postgraduate student, Department of Mold and Die Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan 807.
Sheng-An Yang, Professor, Department of Mold and Die Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan 807.Follow

Abstract

An analytical model has been developed for the study of turbulent film condensation from downward flowing vapors onto a horizontal elliptical tube with variable wall temperature. The interfacial shear at the vapor condensate film is evaluated with the help of Colburn analogy. The condensate film flow and local/or mean heat transfer characteristics from a horizontal elliptical tube with nonuniform temperature variation under the effect of Froude number, sub-cooling parameter and system pressure parameter has been conducted. Although the non-uniform wall temperature variation has an appreciable influence on the local film flow and heat transfer; however, the dependence of mean heat transfer on the non-uniform wall temperature variation is almost negligible.

Recommended Citation

Lin, Yan-Ting and Yang, Sheng-An (2004) "Turbulent Film Condensation on a Horizontal Elliptical Tube with Variable Wall Temperature," Journal of Marine Science and Technology: Vol. 12: Iss. 4, Article 9.
DOI: 10.51400/2709-6998.2250
Available at: https://jmstt.ntou.edu.tw/journal/vol12/iss4/9