Experimental study on the hydrothermal performance of nanofluids-cooled heat sinks with diamond shape micro pin-fin structures
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-05-01 |
| Journal | International Journal of Thermofluids |
| Authors | Weerapun Duangthongsuk, Suriyan Laohalertdecha, Somchai Wongwises |
| Institutions | National Science and Technology Development Agency, Southeast Asia University |
| Citations | 9 |
Abstract
Section titled āAbstractāModern electronic devices with small heat transfer areas have very high heat flux. As a result, high temperatures are attained by these devices. Proper heat dissipation must be done to avoid damaging them. Thus, thermal and hydraulic performance of novel heat sinks with two different diamond-shaped micro-pin-fin (MPF) arrangements, inline and staggered, are experimentally examined. This has not yet been reported in the research literature. Heat sinks (HSS) with dimensions of about 30 mm x 33 mm are fabricated from copper. MPFS are designed with a diamond shape and arranged in inline (DPFHS-I) and staggered (DPFHS-S) layouts. Hydraulic diameters of each flow channel are kept constant at 1.0 mm for DPFHS-I and DPFHS-S. At first, DI water flows through the test section under laminar flow. Reynolds numbers (Re) based on the hydraulic diameter ranged from 100 to 600. Then, SiO2-water nanofluids with various particle volume fractions (Ļ) are tested to determine their potential for heat removal and apparent pressure drop (ĪP) across the heat sink, compared to water. Wall heat fluxes ranging between 10 and 52 kW/m2 are applied. The effects of pin-fin layout, Re, and Ļ on the cooling performance, performance index (PI), and ĪP are examined. Experimental results illustrate that the thermal performance is augmented with increasing Re and Ļ. The DPFHS-S had around 3-10 % higher thermal performance than the DPFHS-I. Experimental data indicated that using nanofluid coolants had a small effect on the ĪP and pumping power. Finally, new correlations for the Nusselt number and ĪP are proposed that are simple and can be used in practical applications. Most of the predicted data lies within Ā±10 % of the experimental data.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 1981 - High performance heat sinking for VLSI [Crossref]
- 1995 - Enhancing thermal conductivity of fluids with nanoparticle
- 2015 - An experimental study on the thermal and hydraulic performances of nanofluids flow in a miniature circular pin fin heat sink [Crossref]
- 2015 - A comparison of the heat transfer performance and pressure drop of nanofluid-cooled heat sinks with different miniature pin fin configurations [Crossref]
- 2017 - An experimental investigation on the heat transfer and pressure drop characteristics of nanofluid flowing in microchannel heat sink with multiple zigzag flow channels [Crossref]
- 2018 - A comparison of the thermal and hydraulic performances between miniature pin fin heat sink and microchannel heat sink with zigzag flow channel together with using nanofluids [Crossref]
- 2015 - Thermal performance investigation of staggered and inline pin fin heat sinks using water based rutile and anatase TiO2 nanofluids [Crossref]
- 2017 - Effect of channel angle of pin-fin heat sink on heat transfer performance using water based graphene nanoplatelets nanofluids [Crossref]
- 2017 - Graphene nanoplatelets nanofluids thermal and hydrodynamic performance on integral fin heat sink [Crossref]
- 2017 - Effects of different pin-fin interruptions on performance of a nanofluid-cooled zigzag miniature heat sink (MHS) [Crossref]