An example of a natural convection finned heat sink is used to show how the thermal mass of the heat sink can be used to reduce its required cooling capacity. Generally the effects of thermal mass are intuitive but calculating the benefits can sometimes be challenging. This example shows an easy and quick simulation for evaluating the potential benefits of the transient behavior.
|XL4Sim Simulation of a Transient, Naturally Cooled Heat Sink.|
The maximum predicted heat sink temperature is 87.7 C for a corresponding delta T = 62.7 C. The time/temperature plot is shown below for the maximum temperature location.
|Animation of the HX Temperatures over Time.|
|Steady Temperatures Assuming Continuous Full Power.|