年間 8 号発行
ISSN 印刷: 1065-5131
ISSN オンライン: 1563-5074
Indexed in
Effect of Fin Geometry on the Condensation Heat Transfer Performance of a Bundle Horizontal Low-Finned Tubes
要約
A theoretical study is made to optimize the fin dimensions of a horizontal low-finned condenser tube having a new class of high performance fin recently proposed by the authors. The shape of the proposed fin is characterized by a monotonically increasing radius of curvature near the fin tip and a constant thickness near the fin root. Extensive numerical calculations with systematically changed values of fin dimensions and vertical bundle depth are conducted to optimize the fin geometry with HCFC-123 as a condensing fluid. The results are compared with those for a rectangular fin. The newly proposed finned tube shows a significantly higher heat transfer performance than the rectangular fin tube. For a typical operating condition and a vertical bundle depth of 30, the newly proposed finned tube with an optimized fin geometry provides an enhancement in the mean overall heat transfer coefficient of a factor of 5.8 over the smooth tube.
-
Honda H., Takamatsu H., Takata N., Experimental measurements for condensation of downward-flowing R123/R134a in a staggered bundle of horizontal low-finned tubes with four fin geometries, International Journal of Refrigeration, 22, 8, 1999. Crossref
-
Honda H., Takata N., Takamatsu H., Kim J.S., Usami K., Condensation of downward-flowing HFC134a in a staggered bundle of horizontal finned tubes: effect of fin geometry, International Journal of Refrigeration, 25, 1, 2002. Crossref
-
Honda H. , Takata N. , Takamatsu H. , Kim J. S. , Usami K. , Effect of Fin Geometry on Condensation of R407C in a Staggered Bundle of Horizontal Finned Tubes , Journal of Heat Transfer, 125, 4, 2003. Crossref
-
Belghazi M. , Bontemps A. , Marvillet C. , Condensation Heat Transfer on Enhanced Surface Tubes: Experimental Results and Predictive Theory , Journal of Heat Transfer, 124, 4, 2002. Crossref
-
Imdad Aaqib, Ali Hassan, Farooq Haroon, Ali Hafiz, Effect of condensate flow rate, surface tension, density and vapor velocity on condensate retention of wire wrapped tubes, Thermal Science, 26, 1 Part B, 2022. Crossref