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ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
STATISTICAL ANALYSIS USING MINITAB IN THE STUDY OF NATURAL CONVECTION IN HEATSINKS
Submission Author:
Sandro Metrevelle Marcondes de Lima e Silva , MG , Brazil
Co-Authors:
Bruno de Campos Salles Anselmo, Vilson Altair da Silva, Sandro Metrevelle Marcondes de Lima e Silva
Presenter: Bruno de Campos Salles Anselmo
doi://10.26678/ABCM.ENCIT2016.CIT2016-0656
Abstract
Heatsinks are capable of improving the operating temperature of a wide range of equipment. With the increasing miniaturization of electronic equipment, a greater efficiency in heatsinks is necessary. In this study, the behavior of different geometric parameters in rectangular finned heatsinks was analyzed. Experiments were made to obtain the temperature distribution in the heatsink. Experimental and theoretical analyses were performed to obtain the average heat transfer coefficient, h, as well as other parameter like Nusselt number. Altogether 16 heatsinks were tested, 8 with 100 mm x 100 mm, and 8 with 50 mm x 50 mm base area. These heatsinks were tested in the horizontal and vertical positions with temperatures ranging between 20°C and 100°C. Analyses were performed with experimental data involving Nusselt number, heat transfer coefficient, h, the dimensions of the base, the geometric parameters, (height, thickness, space between fins), and positions of heatsinks. Empirical correlations extracted from literature were used to validate the results obtained in this study. Finally, a statistical study was conducted using Minitab software to analyze the influence of the geometrical parameters in the Nusselt number. An analysis of the uncertainties was also carried out. A classification of all heatsinks based on the relation of temperature and supplied power was accomplished. In addition, a new empirical correlation, using Minitab, with experimental data of the present study is proposed.
Keywords
Heat sinks, Empirical Correlation, Statistical Analysis, Uncertainty Analysis., Minitab
