A theoretical Study of Film Condensation in Horizontal Microfin Tubes

摘要

A stratified flow model of film condensation is helically grooved, horizontal microfin tubes has been developed. The height of stratified condensate was estimated by extending the Taitel and Dukler model for a smooth tube to a microfin tube. For the upper part of the Tube exposed to the vapor flow, laminar film condensation due to the combined effects of Gravity and surface tension forces was assumed. For the lower part of the tube exposed to The stratified condensate flow, the heat transfer coefficient was estimated by an empirical Equation for the internally finned tubes developed by Carnavos.