An experimental investigation on the heat transfer and pressure drop characteristics of nanofluid flowing in microchannel heat sink with multiple zigzag flow channel structures

Duangthongsuk, Weerapun; Wongwises, Somchai

doi:10.1016/j.expthermflusci.2017.04.013

Cited by 75 publications

(15 citation statements)

References 21 publications

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“…Because this configuration gives more uniform cooling as well as reducing the maximum temperature rise. Duangthongsuk and Wongwises 85 have used two different zig‐zag configurations of flow channel structures. The first one is the continuous zigzag flow channel heat sink (CZ‐HS).…”

Section: Nanofluids In Microchannelmentioning

confidence: 99%

Nanofluid in the multiphase flow field and heat transfer: A review

Dey

Sahu

2021

Heat Trans

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Two‐phase heat transfer is widely used in the heat transfer field, for example, condenser and evaporator in the refrigeration system, riser, and condenser in thermal power plants, and so on. The advantage of two‐phase heat transfer is that it gives a very‐high convective heat transfer coefficient compared to other modes of heat transfer. Nanofluid is a comparatively new heat transfer fluid and very popular because of its improved thermophysical properties. If nanofluid is used in a two‐phase heat transfer field, then the convective heat transfer coefficient may improve further. Nanofluids are possibly useful in many studies in two‐phase heat transfer like pool boiling heat transfer, flow boiling heat transfer, nanofluids in a microchannel, forced convective heat transfer, condensation, spray cooling, enhanced oil recovery, and so on. The effect of nanoparticles on wettability, contact angle, and nucleation sites are also reviewed in this paper. Numerical studies in two‐phase heat transfer are also reviewed and summarized in this paper. In this review, the chronological development of heat transfer in the two‐phase field is provided in a tabular form. This table covers a wide period starting Before Common Era ages until the recent addition of nanoparticles in the two‐phase heat transfer fluid.

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Section: Nanofluids In Microchannelmentioning

confidence: 99%

Nanofluid in the multiphase flow field and heat transfer: A review

Dey

Sahu

2021

Heat Trans

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“…Besides that, vortex flow induced by the rib geometry because of adverse pressure gradient can change the flow structure of fluid at the nearest cavity area, where the increase in the degree of flow mixing can contribute to the enhancement of heat transfer performance Some criteria need to be considered during the preparation of nanofluid, which include base fluid selection, size, shape, concentration, purity, dispersibility, thermal conductivity, preparation method (dispersion technique and sonication time [121,122]), and compatibility of nanoparticles that ensure the homogeneity of nanofluid [123]. Table 3 shows some types of nanoparticles that have been used in the MCHS application in the previous studies [124][125][126][127][128][129][130][131][132][133][134][135][136] It can be observed that most of the researchers were interested in Al 2 O 3 nanoparticle as an additive in a base fluid for the MCHS application. Besides that, pure water such as deionised (DI) and distilled water was widely used as a base fluid in the analysis.…”

Section: Utilisation Of Nanofluid In An Mchs With Passive Designmentioning

confidence: 99%

A review of passive methods in microchannel heat sink application through advanced geometric structure and nanofluids: Current advancements and challenges

Japar

Sidik

Saidur

et al. 2020

Nanotechnology Reviews

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Microchannel heat sink (MCHS) is an advanced cooling technique to fulfil the cooling demand for electronic devices installed with high-power integrated circuit packages (microchips). Various microchannel designs have been innovated to improve the heat transfer performance in an MCHS. Specifically, the utilisation of nanotechnology in the form of nanofluid in an MCHS attracted the attention of researchers because of considerable enhancement of thermal conductivity in nanofluid even at a low nanoparticle concentration. However, a high-pressure drop was the main limitation as it controls the MCHS performance resulted from heat transfer augmentation. Therefore, this study aimed to critically summarise the challenges and limitations of both single and hybrid passive methods of MCHS. Furthermore, the performance of nanofluid as a coolant in the MCHS as affected by the type and concentration of nanoparticle and the type of base fluid was reviewed systematically. The review indicated that the hybrid MCHS provides a better cooling performance than MCHS with the single passive method as the former results in a higher heat transfer rate with minimal pressure drop penalty. Besides that, further heat transfer performance can be enhanced by dispersing aluminium dioxide (Al2O3) nanoparticles with a concentration of less than 2.0% (v/v) in the water-based coolant.

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“…The performance of microchannel with sinusoidal cavities and rectangular ribs was found to have significant improvement in performance at high Re compared to the other two configurations. Duangthongsuk and Wongwises (2017) introduced zig-zag flow to increase the heat transfer area. With different volume fractions of nanofluid, the crosscut zig-zag channel showed better thermal performance.…”

Section: Introductionmentioning

confidence: 99%

Microchannel with Waviness at Selective Locations for Liquid Cooling of Microelectromechanical Devices

2021

JAFM

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Miniaturized electronic components require effective heat transfer mechanism to dissipate heat with less surface area available for convective heat dissipation. Liquid cooling system with in-built microchannel is one of the feasible options. The new idea proposed in the present work is incorporation of waviness at selective locations in the microchannel. This method enhances heat transfer as well as maintains uniform surface temperature. Three-dimensional numerical simulations are carried out using ANSYS Fluent 15. Water is taken as the working fluid. Present numerical results of base case with plane wall are validated using published experimental and numerical results available in literature. Systematic study has been conducted by varying the flow Reynolds number and design parameters viz., wave amplitude and wavelength of the waviness on bottom wall. The computational results are presented in the form of Nusselt number, pressure drop and friction factor. Performance of the wavy wall microchannel is better with short wavelengths. In the present configuration of rectangular microchannel, wave amplitude of 0.2Dh with wavelength of 3Dh shows optimum performance. Moreover, selective waviness on bottom wall shows better performance with uniform surface temperature.

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An experimental investigation on the heat transfer and pressure drop characteristics of nanofluid flowing in microchannel heat sink with multiple zigzag flow channel structures

Cited by 75 publications

References 21 publications

Nanofluid in the multiphase flow field and heat transfer: A review

Nanofluid in the multiphase flow field and heat transfer: A review

A review of passive methods in microchannel heat sink application through advanced geometric structure and nanofluids: Current advancements and challenges

Microchannel with Waviness at Selective Locations for Liquid Cooling of Microelectromechanical Devices

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