Fins are used to increase heat transfer area and provide a cooling effect.
Heat sink calculator excel.
This tool is designed to calculate junction temperature of an electronic device typically power devices given four parameters.
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.
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 first calculates the optimum spacing between the fins to achieve maximum convection cooling.
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.
Values for l and h are first chosen based on your heat sink design constraints.
It has the following features.
A reference link has been placed below the calculator for further reading.
In our experience it generally estimates the overall heat sink volume within 15 of a final design.
The flow between the fins of the heat sink will the modeled as internal fully developed flow.
How does the heat sink calculator work.
Fin spacing height and thickness.
The heat source is assumed to cover the entire base of the heat sink.
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.
The maximum ambient temperature the device s junction to package thermal resistance the thermal resistance of the heat sink and the power applied.
Steady state or transient solutions are available for forced are natural convection.
Heat sink sizing calculations in order to calculate the heat transfer characteristics of the heat sink the convection coefficient h must be calculated.
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.
A fin n ed heat sink temperature distribution can be determined given heat sources.
Heat transfer by convection of a heat sink with fins calculator and equations.
However if h a p k is greater than 1 00 the fins will insulate and prevent heat flow.
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.
Et heat sink v1 0 this module is an excel com add in.
