20.500.12556/RUL-117686 Experimental and numerical heat transfer analysis of heat-pipe-based CPU coolers and performance optimization methodology This paper presents an experimental and numerical heat transfer analysis of heat-pipe-based CPU coolers and a performance optimization methodology. The first part of the study focuses on the performance of two commercial HP-based CPU coolers under inclination angles of 0°, 90° and 180°. The results show that the 90° orientation provides the best thermal performance. The influence of heat pipe orientation on the performance of the entire system is obscured due to the much higher thermal resistance on the air-side of the cooler. A fourfold increase in air volumetric flow rate has only a minor effect on the cooling performance enhancement with a reduction of the thermal resistance from 0.11 K W [sup minus] 1 to 0.074 K W [sup minus] 1 at the highest heating power. In the second part of the study, heat transfer numerical simulations of the finned part of a cooler were performed and validated using experimental results. The output of the simulation is a 2-D temperature field, which is used as an input for the optimization methodology based on fin effectiveness and fin efficiency. Optimizing the fin geometry by removing unnecessary material yielded a 23% increase of the fin efficiency and decreased the weight of a fin by approx. 30%, proving the usefulness of the proposed methodology, which helps reduce costs, weight and development time of finned HP-based coolers. thermal management heat exchangers heat pipes extended surfaces CFD simulations optimization methodology prenos toplote prenosniki toplote toplotne cevi razširjene površine CFD simulacije optimizacijska metodologija true false true Angleški jezik Slovenski jezik Članek v reviji 2020-07-21 13:24:38 2020-07-21 13:24:43 2023-11-29 09:00:58 0000-00-00 00:00:00 2020 0 0 Str. 1-14 Vol. 179 Oct. 2020 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 519.8:536.2(045) 1359-4311 10.1016/j.applthermaleng.2020.115720 23178243 1861910 RAZ_Moze_Matic_2020.pdf RAZ_Moze_Matic_2020.pdf 1 8E01876839235815D76CDECD1EB1463D 296db358ad15374f1fedec70c1c14a2861734fb202f1635665a110db2daea467 3d5bb3c8-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=131576 https://www.sciencedirect.com/science/article/pii/S1359431120332026?via%3Dihub 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=131574 Fakulteta za strojništvo 0 0 0