Influence of the Foam Flow Turning on the Staggered and In-Line Tube Bundles Heat Transfer Intensity

摘要

The heat transfer of tube bundles to foam flow under the 180 degree turn was investigated experimentally. The statically stable foam flow was used as coolant. Investigations were performed on the experimental laboratory set-up consisting of the foam generator, foam channel and the tube bundle. Two types of tube bundle configuration (staggered and in-line) were used for experimental investigations. Volumetric void fraction of the foam varied in the interval 0.996÷0.998; the foam flow regime was laminar. Generalization of investigations results are presented in this paper.