Experimental studies of influence of the turbulent flow structure on temperature distribution in a compact heat exchanger
B.V. Perepelitsa
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia, perep@itp.nsc.ru
Keywords: turbulence, flow structure, corrugated sheets, wall temperature, contact points, gap
Pages: 603-609
Abstract
Results of experimental investigation of temperature distribution over the surface of a complex heat exchanger (the Frenkel packing type) are presented. Measurements were carried out in the air flow between two sheets with triangular corrugations directed at 90° to each other. Measurements were carried out by the microthermocouples glued on the heated outer surface. The effect of Reynolds numbers, a gap between corrugated sheets, and substitution of one corrugated sheet by the smooth one on temperature distribution over the heat exchanger surface in the turbulent air flow is analysed. According to the performed experiments, there is a significant effect of a gap and applied perturbations on the type of temperature distribution over the perimeter of a heated cell.
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