Experimental investigation of thermal conductivity behavior of MWCNTS-Al2O3/ethylene glycol hybrid Nanofluid: providing new thermal conductivity correlation

Arani, Ali Akbar Abbasian; Pourmoghadam, Farhad

doi:10.1007/s00231-019-02572-7

Cited by 30 publications

(10 citation statements)

References 62 publications

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“…This enhancement in thermal conductivity obtained in hybrid composites is due to the formation of enhanced filler network through the bridging of larger platelets by hBN nanoparticles. The synergistic effects between the hybrid fillers with different shapes and sizes were also explored by various researchers [31][32][33][34][35][36]. The formation of enhanced filler network through the bridging of hBN platelets in hybrid composites may also influence the interfacial phonon scattering and thermal resistance inside the composites.…”

Section: Resultsmentioning

confidence: 99%

“…Hybrid fillers can improve the dispersion performance of the fillers in polymer matrix and help to bridge the adjacent fillers to form enhanced thermal conduction paths/channels [30]. Some common hybrid fillers used to prepare the high thermal conductive composites are binary hybrids such as SiCw/ SiCp [31], lBN/nBN [32], MWCNT/Al 2 O 3 [33], graphene/CNT [34], and multi-hybrids such as BN/ GNPs/CF [35] and CF/hBN/Cu [36].…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

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Thermally conductive poly(ether ether ketone)/boron nitride composites with low coefficient of thermal expansion

Ghosh

Hou

2021

J Mater Sci

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The substantial heat generation due to miniaturization and high-degree integration of electronic devices is one of the major issues to facilitate efficient thermal management in power electronics. Though epoxy-based composites have shown great interest in different applications such as laminated circuit board, electronic component encapsulations, and potting, they have low application temperature (up to 150 °C) and higher mismatch of coefficient of thermal expansion (CTE) between the heat source and heat sink. Here, poly(ether ether ketone) (PEEK) composites reinforced with hexagonal boron nitride (hBN) nanoplatelets have been developed by liquid mixing and re-melting method for a step change in composite materials with lower CTE and significantly improved thermal dissipation capability. The lowest achieved CTE is 2.1 µm m−1 K−1, and the highest thermal conductivity is 1.04 W m−1 K−1 in PEEK/hBN composites at 30 wt% hybrid hBN content (hBN platelets with two different sizes, i.e. 70 nm and 500 nm, taken as 1:1 weight ratio), due to the formation of thermally conductive inter-filler networks. The composites show negligible variation in K with the working temperature up to 250 °C. The developed composites also exhibit excellent electrical insulation properties; thus, they will have good potential in thermal management for power electronic applications. Graphical abstract

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Section: Resultsmentioning

confidence: 99%

Section: Graphical Abstract Introductionmentioning

confidence: 99%

Thermally conductive poly(ether ether ketone)/boron nitride composites with low coefficient of thermal expansion

Ghosh

Hou

2021

J Mater Sci

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“…Experimental methods have been devised to check the stability of NF and HNF. These include sedimentation, centrifugation, spectral absorbency, viscosity, electron microscopy, ZP, poly-disparity index and light scattering [ 10 , 27 , 34 , 45 , 46 , 47 , 48 ]. In studies involving CHT in enclosures, the sedimentation, centrifugation, spectral absorbency, viscosity, density, ZP and poly-disparity index are mostly engaged to check the stability of NF and HNF [ 15 , 16 , 36 , 49 , 50 , 51 ].…”

Section: Formulation and Stability Of Mono-particle And Hybrid Nanmentioning

confidence: 99%

“…Several studies have been conducted on the TC of HNF since the pioneering works of Chokpar et al [ 56 ] and Jana et al [ 57 ]. These studies utilized several combinations of NP dispersed in diverse base fluids at different temperatures and volume/mass concentrations or fractions and reported TC enhancements with a rise in temperature and volume/mass concentrations or fractions [ 46 , 58 , 59 , 61 , 62 , 63 , 65 , 75 , 77 , 100 , 101 , 102 ]. It has been established and published that the TCs of HNF are numerically above those of NF [ 65 , 77 , 102 ].…”

Section: Thermophysical Properties Of Nanofluids and Hybrid-nanoflmentioning

confidence: 99%

Experimental Research and Development on the Natural Convection of Suspensions of Nanoparticles—A Comprehensive Review

et al. 2020

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Suspensions of nanoparticles, widely known as nanofluids, are considered as advanced heat transfer media for thermal management and conversion systems. Research on their convective thermal transport is of paramount importance for their applications in such systems such as heat exchangers and solar collectors. This paper presents experimental research on the natural convection heat transfer performances of nanofluids in different geometries from thermal management and conversion perspectives. Experimental results and available experiment-derived correlations for the natural thermal convection of nanofluids are critically analyzed. Other features such as nanofluid preparation, stability evaluation and thermophysical properties of nanofluids that are important for this thermal transfer feature are also briefly reviewed and discussed. Additionally, techniques (active and passive) employed for enhancing the thermo-convection of nanofluids in different geometries are highlighted and discussed. Hybrid nanofluids are featured in this work as the newest class of nanofluids, with particular focuses on the thermophysical properties and natural convection heat transfer performance in enclosures. It is demonstrated that there has been a lack of accurate stability evaluation given the inconsistencies of available results on these properties and features of nanofluids. Although nanofluids exhibit enhanced thermophysical properties such as viscosity and thermal conductivity, convective heat transfer coefficients were observed to deteriorate in some cases when nanofluids were used, especially for nanoparticle concentrations of more than 0.1 vol.%. However, there are inconsistencies in the literature results, and the underlying mechanisms are also not yet well-understood despite their great importance for practical applications.

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“…In the field of nanofluids, the trend of combining use of dissimilar nanoparticles into base fluid becomes popular [1][2][3]. The main purpose to synthesize the hybrid nanofluids is to greatly enhance the thermal or rheological properties of convective fluids where single materials fail to achieve [4,5]. Most researchers paid much attention to effective properties and its applications in the aspect of heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Boundary layer flow pattern of heat and mass for homogenous shear thinning hybrid‐nanofluid: An experimental data base modeling

Hassan

El‐Zahar

Khan

et al. 2020

Numerical Methods Partial

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The boundary layer flow problem for non‐Newtonian hybrid nanofluid over moving wedge is discussed. The hybrid nanofluid is synthesized by equal suspensions of MWCNTs and SiO2 nanoparticles in a binary mixture of EG–water. The physical problem is modeled through continuity, momentum, and energy equations and a two‐parameter rheological model relates shear stress to shear rate is used that obey the trend of experimental result. The relevant governing equations are simplified form by means of the similarity transformation and then solved by an analytical scheme. The results are obtained at different nanoparticles volume fractions for velocity and temperature profiles and displaced graphically for discussion. In addition, displacement and momentum thicknesses are calculated numerically to understand the deflation in mass flow rate and momentum flux to due to boundary layer growth. The results show that velocity profile is reduced due to increasing of viscosity by nanoparticle volume fraction. In this consequence, the displacement and momentum thicknesses are increased.

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Experimental investigation of thermal conductivity behavior of MWCNTS-Al2O3/ethylene glycol hybrid Nanofluid: providing new thermal conductivity correlation

Cited by 30 publications

References 62 publications

Thermally conductive poly(ether ether ketone)/boron nitride composites with low coefficient of thermal expansion

Thermally conductive poly(ether ether ketone)/boron nitride composites with low coefficient of thermal expansion

Experimental Research and Development on the Natural Convection of Suspensions of Nanoparticles—A Comprehensive Review

Boundary layer flow pattern of heat and mass for homogenous shear thinning hybrid‐nanofluid: An experimental data base modeling

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