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ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
EXPERIMENTAL STUDY OF FORCED CONVECTION HEAT TRANSFER IN A HEATSINK WITH RECTANGULAR FLAT FINS
Submission Author:
Vilson Altair da Silva , MG , Brazil
Co-Authors:
Vilson Altair da Silva, Sandro Metrevelle Marcondes de Lima e Silva, Elisan dos Santos Magalhães
Presenter: Elisan dos Santos Magalhães
doi://10.26678/ABCM.ENCIT2022.CIT22-0644
Abstract
Nowadays the effects of the heat in some equipment are a problem to the lifetime these. The heat can injure fragile parts, mainly electronic devices and pieces fixed mechanically. This paper studies one way to control the heat loss in heatsinks. The study consists of putting a heatsink in a computer-controlled subsonic wind tunnel. Heatsinks are positioned horizontally and vertically in the wind tunnel. During the experimental tests, the wind speed was increased. The heatsink base is heated using a resistive heater supplied by a power source. In forced convection, the steady-state was reached in a quarter of the time of the experiments in natural convection. With this study, we can compare the difference between the performance of the heatsinks in these two configurations tested, positioned vertically and horizontally. The methodology also can show how the variation of the wind speed affects the heat transfer by forced convection in the heatsink. Initially, when positioned horizontally, that is, with the direction of flow parallel to the lines of the length of the fins, heatsinks are more effective when exchanging heat by convection. With the heatsink in the vertical position, the cooling system needs more power to keep the system at the same temperature as the horizontal heatsink configuration. However, this configuration takes up more space. Thus, it is not frequently used because the miniaturization of components is a very important factor, especially in electronic equipment. Therefore, the study and understanding of forced convection become essential in this scenario since, when studying this subject, enhancements can be made to equipment, improving its performance and design.
Keywords
Heatsink, forced convection, Experimental tests, Wind Tunnel
