2005 Volume 30 Issue 101 Pages 33-42
In the previous paper, we have proposed the fin efficiency model of the 2-dimensional straight fin and the convenient latent heat model which identifies the latent heat added upon the fin surface with an increase of the heat transfer coefficient regarding the heat transfer with condensation of moist air. In this study, for wide-range of conditions we have proposed a new heat transfer model with condensation including presence of dry area on the fin surface. We have also proposed a generalized model of the bypass-factor of latent heat even in the condition that the bypass-factor of latent heat is not equal to that of sensible heat. These models use the approximation function of temperature distribution on the fin surface. Then, we have constructed a conventional calculation procedure for the heat transfer with condensation using these models. We have investigated the validity of these models comparing with the numerically derived data directly from the heat conducting equation of the fin. As a consequence, it was proved that this procedure gives quite good approximation for any practical conditions.
