An experimental investigation of natural convection heat transfer enhancement from perforated rectangular fins array at different inclinations

The main objective of this experimental study is to quantify and compare the natural convection heat transfer enhancement of perforated fin array with different perforation diameter (4-12 mm) and at different angles of inclination (0-90 degrees). The variables for this natural convection cooling with the help of finned surfaces are orientation and geometry. In this study, the steady state heat transfer from the solid fin and perforated fin arrays are measured. The increase in the heat transfer coefficient was achieved with perforated fins of 12 mm perforation diameter at the angle of orientation 45, which shows about 32% enhanced heat transfer coefficient as opposed to the solid fin array with nearly 30% saving in material by mass. (C) 2015 Elsevier Inc. All rights reserved.