Investigation of the Performance Parameters of an Experimental Plate Heat Exchanger in Single Phase Flow

摘要

Experiments were conducted to determine the heat transfer characteristics for fully developed flow of air and water flowing in alternate corrugated ducts. The test section was formed by three identical corrugated channels having corrugation angle of 30^o with cold air flowing in the middle one and hot water equally divided in the adjacent channels. Sinusoidal wavy arcs connected with tangential flat portions make the said corrugation angle with transverse direction. The Reynolds number based on hydraulic diameter varied from 750 to 3200 for water and from 566 to 2265 for air by changing the mass flow rate of the two fluids. The Prandtl numbers were approximately constant at 2.55 for water and 0.7 for air. The various correlations obtained are Nu_m=0.247Re^0.83 and Nu_m=0.409Re^0.57 for water and air, respectively and f = 2.014Re^-0.12 for air channel.