No. 112, 2003, 103-118
Temperature field in two-layer fins immersed in boiling water
ROBERT PASTUSZKO
Abstract
The steady, two-dimensional temperature field for a two-layer fin, composed of copper core and porous covering, filled with boiling water was calculated. Simplified one-dimensional model was also presented. Fin parameters were: height – 10 mm, thickness – 3 mm, porosity – 60%, capillary-porous structure (CPS) layer thickness – 0.6 mm. The modified finite difference method was described. The heat transfer coefficient was assumed to vary with a power-law-type formula. Temperature distribution in the fin vertical section was determined experimentally with a thermovision camera. A reasonable degree of congruence was found to exist between the theoretical and the experimental results.
Keywords:
Two-layer fins, Porous structure, Nucleate boilingDownload: