Abstract
This study examines thermal resistance under natural convection for two different types (Type A and Type B) of pin-fin heat sinks with/without a hollow in the heated base. The effects of the rate of heat transfer, the height of fin, the finning factor, the heat sink porosity and the perforated base plate on the thermal resistance were investigated and evaluated. Experimental results show that thermal resistance, using pin-fin heat sinks, is significantly different for Type A and Type B.
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