ISSN Online: 2377-424X
ISBN Print: 0-89116-559-2
International Heat Transfer Conference 8
EFFECT OF POROUS DRAINAGE STRIPS ON FILM CONDENSATION ON DOWNWARD-FACING HORIZONTAL SURFACES
Résumé
Experimental and analytical studies were made of the effect of porous drainage strips on the condensation heat transfer performance of downward-facing horizontal surfaces. A smooth surface and two low finned surfaces with and without the porous drainage strip were tested for condensation of R-113 and methanol. For the finned surfaces, a marked increase in the heat transfer coefficient was achieved by use of the porous drainage strip. The maximum values of the heat transfer coefficient obtained were 9.0 and 12.2 times the smooth surface value for R-113 and methanol, respectively. An analytical model was developed for laminar film condensation on the finned surface with the porous drainage strip. The numerical results are compared with the measurements.