Experimental study on thermal efficiency improvement using nanofluids in heat sink with heated circular cylinder

Qi, Cong; Li, Keao; Li, Chunyang; Shang, Bichen; Yan, Yuying

doi:10.1016/j.icheatmasstransfer.2020.104589

Cited by 53 publications

(6 citation statements)

References 78 publications

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“…The hydraulic and thermal features of Fe 3 O 4 -water nano fluids flowing round a heated circular cylinders with perpendicular fin in a heat sink have been experimentally studied by Qi et al 30 . In their study, researchers found that the most acceptable working conditions for the greatest heat exchange output are nanoparticle mass fraction equal to 0.4 percent and fin height H equal to 3 mm and showed that thermal efficiency increases with fin height.…”

Section: Introductionmentioning

confidence: 99%

Improving the performance of mini-channel heat sink by using wavy channel and different types of nanofluids

Saadoon

Ali

Hamzah

et al. 2022

Sci Rep

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The combination of nano fluid and changing cross-section mini-channel heat sink effects have become a remarkable choice for the use of thermal devices such as miniature electronic devices to be effectively cooled. In this paper, the comparison of three dimensional straight and wavy channel configuration with using different types nano fluids are numerically investigated. The effects of wave amplitude and A particular type of volume fraction of (Copper Oxide CuO, Dimond Al2O3, Iron Oxide Fe3O4, Titanium Oxide TiO2 and Silver Ag-nano fluids are offered. Three amplitudes of waves (0.15 mm, 0.2 mm and 0.25 mm) and Reynold’s number from 200 to 1000 and concentration volume varieties from 0 to 0.075 are used. The effect on thermal resistance, pressures drop, factor of friction of the mini channel is displayed. It is observed that the mini-channel sink's heat transfer efficiency is greatly enhanced compared to the straight channel in an event of adding distilled water as accoolant. The results indicate that nano fluid and wavy mini-channel can boost the heat sink's hydrothermal efficiency and Ag- water nano fluid in term of heat transfer, it outperforms other nanofluids an enhancement in the Nusselt number reached to 54% at concentration volume 0.075.

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Section: Introductionmentioning

confidence: 99%

Improving the performance of mini-channel heat sink by using wavy channel and different types of nanofluids

Saadoon

Ali

Hamzah

et al. 2022

Sci Rep

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show abstract

“…The results of the analysis have shown that a growth of the nanoparticles concentration and the Reynolds number leads to an increase in the energy transport parameter. The thermohydraulic characteristics of the Fe 3 O 4 /water nanosuspension in a cavity with heated finned cylinders have been investigated experimentally by Qi et al [14]. The influence of the ribs height and the nanoparticles mass fraction has been evaluated in the work.…”

Section: Introductionmentioning

confidence: 99%

“…The thermohydraulic characteristics of the Fe 3 O 4 /water nanosuspension in a cavity with heated finned cylinders have been investigated experimentally by Qi et al. [14]. The influence of the ribs height and the nanoparticles mass fraction has been evaluated in the work.…”

Section: Introductionmentioning

confidence: 99%

Thermogravitational convection of a pseudoplastic nanofluid with varying parameters in an enclosure having a thermally generating wall section

2022

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Researching new and optimizing existing methods of cooling electronic devices are the most important tasks in the modern world. Based on this, our work is devoted to the study of the possibility of intensifying the heat removal from a heated element using natural convective energy transport of a pseudoplastic nano liquid in a cavity. The problem is described by unsteady Oberbeck-Boussinesq differential equations and is solved on the basis of the finite difference method. To calculate the effective parameters of a nanofluid, three sets of different models are used, including temperature dependences. The work also studied the effect of nanoparticles' various types and their volume fraction on flow structure and heat transfer. The results showed that the use of copper oxide as nanoparticles and the correlations of Guo et al. and Jang & Choi can lead to intense cooling of the bottom wall heated section.

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“…[3,4] Scholars have formulated a variety of strategies to address this crisis, including utilizing industrial waste heat, improving heat exchange equipment, and searching for new heat exchange media, making considerable progress. [5][6][7] As a type of energy exchange equipment, heat exchangers are essential for industrial production. [8] Whether in large equipment used for chemical production or small machinery use to manufacture electrical components, the heat exchanger has a wide range of applications.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical simulation of nanofluids forced convection in a corrugated double‐pipe heat exchanger

Ding

Luo

et al. 2021

Can J Chem Eng

Self Cite

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In this study, the heat transfer and flow characteristics of TiO2‐H2O nanofluids with TiO2 mass fractions of 0.0, 0.1, 0.3, and 0.5 wt.% in corrugated and smooth double‐pipe heat exchangers were compared using numerical simulations. The results demonstrated that TiO2‐H2O nanofluids effectively enhanced the heat transfer compared to deionized water, and that the heat exchange capacity gradually increased with the TiO2 mass fraction. The corrugated pipe heat exchanger disturbed the fluid flow on both the shell side and pipe side, breaking the boundary layer and creating vortices in the corrugated zone. This provided a higher heat transfer capability than the smooth double‐pipe heat exchanger, but also increased the fluid flow resistance in the pipe. In general, the use of nanofluids and corrugated pipes was found to significantly improve the heat transfer efficiency of the double‐pipe heat exchanger.

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Experimental study on thermal efficiency improvement using nanofluids in heat sink with heated circular cylinder

Cited by 53 publications

References 78 publications

Improving the performance of mini-channel heat sink by using wavy channel and different types of nanofluids

Improving the performance of mini-channel heat sink by using wavy channel and different types of nanofluids

Thermogravitational convection of a pseudoplastic nanofluid with varying parameters in an enclosure having a thermally generating wall section

Numerical simulation of nanofluids forced convection in a corrugated double‐pipe heat exchanger

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