Heat Sink Calculator Excel

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.

Heat sink calculator excel.

Heat transfer design and engineering. Heat transfer by convection of a heat sink with fins calculator and equations. This tool is designed to calculate junction temperature of an electronic device typically power devices given four parameters. Heat sink calculator is a tool for designing analysing and optimizing heat sink performance contact us today for custom heatsink solutions.

The heat sink calculator is very useful when you are choosing power transistors heat sink etc. The heat sink calculator is easy to use enter the parameters except the one you want to calculate and then press calculate see example below. Fins are used to increase heat transfer area and provide a cooling effect. Fin spacing height and thickness.

7 for air at stp pr 707. Calculate the thermal resistance and pressure drop of a plate fin heat sink and study how individual parameters affect the heat sink performance. Heat sink convection with fins calculator. 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 flow between the fins of the heat sink will the modeled as internal fully developed flow. In our experience it generally estimates the overall heat sink volume within 15 of a final design. Et heat sink v1 0 this module is an excel com add in.

The maximum ambient temperature the device s junction to package thermal resistance the thermal resistance of the heat sink and the power applied. How does the heat sink calculator work. The heat sink size calculator first calculates the optimum spacing between the fins to achieve maximum convection cooling. The heat source is assumed to cover the entire base of the heat sink.

The the width w of the heat sink spacing between the fins s and number of fins n will then be calculated for the selected values of l and h. It has the following features. However if h a p k is greater than 1 00 the fins will insulate and prevent heat flow. A fin n ed heat sink temperature distribution can be determined given heat sources.

Values for l and h are first chosen based on your heat sink design constraints. The convection heat dissipation q c1 from area a 1 the external side surfaces of the heat sink shown figure 2 is first.