Abstract
An Experimental investigation on the thermal performance of copper with aluminium based finned heat sinks for electronics cooling system was studied. The heat sinks have different material proportions containing major constituent of aluminium and minor constituent of copper. Considered with straight finned heat sink for the experiments for its easiness in fabrication and efficient heat transfer properties. The observational results for aluminium with copper alloy are compared with pure aluminium heat sink. Heat sink geometry, fin pitch and its height were taken from the commercially available heat sinks. In this research work best heat sink geometry is chosen and cooked up with different volume of copper added with aluminium. Selected four different spots of heat sinks and the temperature raising characteristics were measured for natural convection. also the temperature is raised to a fixed temperature and the temperature lowering characteristics were measured in forced convection as the air circulation takes more heat to keep the heat sink temperature within the desired level.
Highlights
The heat sinks are designed to solve the heat problems faced by high performance electronics systems
Since the heat removal rate is very low compared to forced convection system of cooling, the natural convection is only for assessing the performance of the heat sink as it shows with huge saturation temperature difference with a small difference the thermal properties of the heat sink
The thermal convection characteristics of the heat sinks with Fine and Coarse Copper particles added with aluminium, about 5% and added with 15% of copper to pure 6063 Aluminium and the result of heat transfer characteristics is compared with pure aluminium heat sink
Summary
The heat sinks are designed to solve the heat problems faced by high performance electronics systems. This is a traditional method to dissipate unwanted heat generated in the system. Among other heat sinks parallel plate finned heat sinks are widely used for its own advantages in fabrication and cost optimization. It is having the advantage of independent of direction of fluid flow. It is found that at low Reynolds numbers friction factors are reformed for intermediary size tubes This has a dynamic allegation for micro scale pin fin heat sinks
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