Thermal management of circular Led heat sink in a multi-hole cavity

In this work, we analyze numerically, using Comsol Multiphysics®, the influence of four parameters (the power of the lamp, the ambient temperature, the angle of inclination of the lamp and the number of holes in the lamp cavity) on the evolution of the junction of a LED heat sink placed in a multi-hole cavity using a fractional factorial plan. Taking into account the results obtained, we optimize our model using the Minitab® manipulation software. Thus, a Pareto analysis (ANOVA) is carried out and a mathematical model is deduced to estimate the junction temperature of the LED lamp as function to the controlled parameters. The different influencing factors and especially the relative amplitude of their effect on the temperature of the LED chip could thus be calculated and demonstrated. If the electric power supply of the LED remains the first factor of impact on the temperature, the other parameters as well as the number of holes, the angle of inclination or the ambient temperature could thus be prioritized in order of influence.