Heat Sink Fins Calculation

Heat transfer by convection of a heat sink with fins calculator and equations.

Heat sink fins calculation.

Calculate the thermal resistance and pressure drop of a plate fin heat sink and study how individual parameters affect the heat sink performance. The width of the heat sink is then calculated based on the number of fins required to dissipate the heat from the heat sink. The heat sink size calculator is based on a well established equation for estimating heat sink volume during the early stages of heat sink design. P perimeter of the fins.

The heat sink size calculator first calculates the optimum spacing between the fins to achieve maximum convection cooling. However if h a p k is greater than 1 00 the fins will insulate and prevent heat flow. H air film convective coefficient a exposed surface area of the fins. In our experience it generally estimates the overall heat sink volume within 15 of a final design.

Advanced tool to calculate thermal resistance pressure drop and base temperature of plate fin heat sinks with flow bypass and base spreading effects. A reference link has been placed below the calculator for further reading.