Thermal performance analysis of plate fin arrays with hexagonal perforations under turbulent flow regime

Abstract

Heat transfer enhancement has been a major concern in modern days in designing heat generating equipment. In the present study an experimental demonstration has been investigated to analyze the thermal performance of solid plate fin arrays and plate fin arrays with hexagonal perforations where the perforations are along the length of the fin, in the turbulent flow regime under steady state forced convection. The air velocity was varied ranging from 4ms−1 to 12ms−1 and data were recorded after a certain period of time at a constant heat flux. The performance of solid plate fin and plate fin with hexagonal perforation as heat sink was tested and best result was found in case of plate fin with hexagonal perforations. Convective heat transfer co-efficient, fin effectiveness, fin efficiency seem to increase in hexagonal perforation than solid ones. Thermal resistance seems to decrease in plate fin with hexagonal perforations than solid fins. This study suggests that most important parameter that govern the performance of fin is the fin geometry and varied cross section i.e. perforations.Heat transfer enhancement has been a major concern in modern days in designing heat generating equipment. In the present study an experimental demonstration has been investigated to analyze the thermal performance of solid plate fin arrays and plate fin arrays with hexagonal perforations where the perforations are along the length of the fin, in the turbulent flow regime under steady state forced convection. The air velocity was varied ranging from 4ms−1 to 12ms−1 and data were recorded after a certain period of time at a constant heat flux. The performance of solid plate fin and plate fin with hexagonal perforation as heat sink was tested and best result was found in case of plate fin with hexagonal perforations. Convective heat transfer co-efficient, fin effectiveness, fin efficiency seem to increase in hexagonal perforation than solid ones. Thermal resistance seems to decrease in plate fin with hexagonal perforations than solid fins. This study suggests that most important parameter that govern the per...