Abstract
Heat Sinks are widely used to remove the heat from the components which are generating heat during their functioning. Overheating causes malfunctioning of the components as well as it is responsible for reducing their life. Free convection is very common way of heat transfer from the heat sink considering power requirement, pressure drop and cost of the forced convection. This paper presents the thermal analysis of vertical plate fin heat sink by theoretical and experimental method at variable heat input. The results are obtained by taking experimental observations and are validated with already existing correlations suggested by various researchers in the literature.
Highlights
Fins are used when present surface area is not sufficient for the removal of generated heat in the components with available temperature difference between surface and surrounding
The results show that combination of plate and pin fin have lower thermal resistance and higher heat transfer compared to only plate fins heat sinks
C) Area is calculated for the finned surface. d) The variable heat input is generator with the help of dimmer and heat supply is determined by wattage reading given by wattmeter. e) The various heat losses are calculated including side convective and radiation loss. f) By using Newton’s law of cooling, the convective heat transfer coefficient is determined
Summary
Fins are used when present surface area is not sufficient for the removal of generated heat in the components with available temperature difference between surface and surrounding. As shown, heat is generated during their working Thermal management of these components is very essential in order to avoid their failure as well as to improve their life span. One of the effective techniques of cooling the electronics components to equip heat sink on their surface to increase their effective surface area and thereby to increase the heat dissipation rate. Heat sinks are the array of number of fins arranged together in order to increase the surface area available for heat transfer. Though air has low specific heat, low conductivity but because of its free availability, low cost and ease of maintenance still it is preferable choice in most of the cases. Various researchers studied the air flow in natural convection over vertical surface of the fin plate and proposed various correlations
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