Steady-state and transient performance of a shrouded longitudinal fin array

Abstract

Experiments were conducted with a forced-convection cooled, shrouded array of longitudinal fins in the steady-state and transient mode of operation. The parameters varied during the experiments were the air blowing rate and power input. Steady-state, instantaneous and time average values of the fin efficiency and average Nusselt number were calculated and compared. Experimentally found time-average fin efficiencies were found to be relatively lower than the corresponding steady-state values with the difference increasing with increasing power and decreasing with increasing air mass flow rate.