This paper demonstrates that the performance of natural-convection pin fin heat sinks can be improved up to 16% by actually removing pin fins from a conventional pin fin heat sink. Both numerical and experimental studies are performed on a commercially available pin fin heat sink suspended in mid-air and correlated well. Both natural convection and radiative heat transfer contributions are analysed. The individual contribution of each pin fin is studied, showing that 94% of heat transfer can be attributed to the heat sink baseplate and two outer rings of pin fins. A two-step optimization strategy was devised and applied leading to an optimal design with a thermal resistance of 3.35 K/W, compared to the original 4.0 K/W, for a 10 W heat load. Altogether, the advantages of computational modelling in combination with experimental testing are exploited leading to better, lighter and more cost effective thermal management solutions.
|Title of host publication||THERMINIC 2019 - 2019 25th International Workshop Thermal Investigations of ICs and Systems|
|Publication status||Published - 25 Sep 2019|
|Event||25th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2019: THERMINIC 2019 - University of Milano, Lecco, Italy|
Duration: 24 Sep 2020 → 24 Sep 2020
Conference number: 25
|Workshop||25th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2019|
|Period||24/09/20 → 24/09/20|