Measurement of thermal conductivity, viscosity and density of ionic liquid [EMIM][DEP]-based nanofluids

Xie, Hua; Zhang, Zhao; Zhao, Jianhua; Gao, Hongtao

doi:10.1016/j.cjche.2015.11.024

Cited by 53 publications

(32 citation statements)

References 30 publications

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“…For a certain range of Reynolds number, ionic liquid-based nanofluid’s heat transfer coefficient achieved a significant improvement. Xie et al [ 29 ] used 1-ethyl-3-methylimidazolium diethyl phosphate ([Emim][DEP]) ionic liquid on MWCNT/Water nanofluid to evaluate its thermal conductivity, viscosity and density. Their results illustrated a maximum thermal conductivity enhancement of 9.7% than the base fluid (water) whereas density and viscosity showed a linear temperature dependence like conventional nanofluids.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Thermophysical and Rheological Properties of Mxene Ionanofluids for Hybrid Solar Photovoltaic/Thermal Systems

et al. 2021

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Since technology progresses, the need to optimize the thermal system’s heat transfer efficiency is continuously confronted by researchers. A primary constraint in the production of heat transfer fluids needed for ultra-high performance was its intrinsic poor heat transfer properties. MXene, a novel 2D nanoparticle possessing fascinating properties has emerged recently as a potential heat dissipative solute in nanofluids. In this research, 2D MXenes (Ti3C2) are synthesized via chemical etching and blended with a binary solution containing Diethylene Glycol (DEG) and ionic liquid (IL) to formulate stable nanofluids at concentrations of 0.1, 0.2, 0.3 and 0.4 wt%. Furthermore, the effect of different temperatures on the studied liquid’s thermophysical characteristics such as thermal conductivity, density, viscosity, specific heat capacity, thermal stability and the rheological property was experimentally conducted. A computational analysis was performed to evaluate the impact of ionic liquid-based 2D MXene nanofluid (Ti3C2/DEG+IL) in hybrid photovoltaic/thermal (PV/T) systems. A 3D numerical model is developed to evaluate the thermal efficiency, electrical efficiency, heat transfer coefficient, pumping power and temperature distribution. The simulations proved that the studied working fluid in the PV/T system results in an enhancement of thermal efficiency, electrical efficiency and heat transfer coefficient by 78.5%, 18.7% and 6%, respectively.

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Section: Introductionmentioning

confidence: 99%

Optimization of Thermophysical and Rheological Properties of Mxene Ionanofluids for Hybrid Solar Photovoltaic/Thermal Systems

et al. 2021

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“…Figures 4 and 5 synthetize some data from the literature in regard to nanoparticles' influence on thermal conductivity enhancement if compared with the ionic liquid thermal conductivity. If we look to Figure 4, we can conclude that the enhancement of conductivity is decreasing when a mixture of ionic liquid + water is considered as the base fluid (see the results from Xie et al [37]). Plus, if we compare data from Franca [26] and Xie et al [37], we can see that, for the same quantity of nanoparticles, the ionic liquid slightly impacts the experimental values.…”

Section: Thermal Conductivitymentioning

confidence: 83%

“…with several exceptions when the nanoparticles fractions are up to 0.05 (see, for example, Franca et al [26], Paul [61], Paul et al [62], Chereches et al [47,65], Hosseinghorbani et al [68]). As for base fluids, several ionic liquids were considered and few authors, such as, for example, Xie et al [37] and Chereches et al [47,60], made mixtures between water and ILs.…”

Section: Thermal Conductivitymentioning

confidence: 99%

Ionic Liquids-Based Nanocolloids—A Review of Progress and Prospects in Convective Heat Transfer Applications

Minea

Murshed

2021

Nanomaterials

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Ionic liquids are a new and challenging class of fluids with great and tunable properties, having the capability of an extensive area of real-life applications, from chemistry, biology, medicine to heat transfer. These fluids are often considered as green solvents. Several properties of these fluids can be enhanced by adding nanoparticles following the idea of nanofluids. These ionic liquids-based nanocolloids are also termed in the literature as ionanofluids or nanoparticles-enhanced ionic liquids. This review summarizes the findings in both areas of ionic liquids and ionic liquids nanocolloids (i.e., ionic liquids with nanoparticles in suspension) with direct applicability in convective heat transfer applications. The review presents in a unified manner the progress and prospects of ionic liquids and their nanocolloids from preparation, thermophysical properties and equally experimental and numerical works. As the heat transfer enhancement requires innovative fluids, this new class of ionic liquids-based nanocolloids is certainly a viable option, despite the noticed drawbacks. Nevertheless, experimental studies are very limited, and thus, extensive experiments are needed to elucidate ionic liquids interaction with nanoparticles, as well as their behavior in convective heat transfer.

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“…Density of the nanofluids was also measured besides the viscosity, and the results were compared with the base fluid by various studies. [25][26][27] Density of the nanofluids exhibited a remarkable increase compared with those of the base liquids. 25,26 Li et al 27 prepared different ZnO/ EG-W mass concentration nanofluids, which demonstrated that the ZnO/EG-W nanofluid could be a promising alternative for conventional coolants.…”

Section: Introductionmentioning

confidence: 97%

Investigating the effect of nanoparticle on thermo-economic optimization of fin and tube heat exchanger

Hajabdollahi

Hajabdollahi²

2016

Proceedings of the Institution of Mechanical Engineers, Part E:

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In this paper, the effects of Al 2 O 3 nanoparticles suspended in the water-based fluid on the thermo-economic properties of a fin and tube heat exchanger are studied using fast and elitism nondominated sorting genetic algorithm. Nine design parameters are selected as design parameters, and the total annual cost and effectiveness are considered as the two objective functions. First, the effect of nanoparticle on the total annual cost versus effectiveness is obtained at different cold side mass flow rates, and the results are compared with the base fluid. The results show that nanoparticles have a significant influence on the total annual cost and effectiveness in a lower cold side mass flow rates. Next, the heat exchanger volume versus effectiveness for the optimum points is measured at different cold side mass flow rates. It is demonstrated that, adding Al 2 O 3 nanoparticle to the base fluid for the fixed value of effectiveness, decreases the heat exchanger volume, and this reduction is more significant in the lower mass flow rates. The pressure drop and total heat transfer surface area versus effectiveness for the optimum points are also obtained with and without nanoparticle. An increase in the tube side pressure drop is revealed in the nanofluid. In addition, due to the increase in the overall heat transfer coefficient, the lower heat transfer surface area is required for the fixed value of effectiveness. Finally, variations of objective functions versus particle volumetric concentration for five typical optimum points are estimated. It is concluded that an optimal value for the volumetric concentration can be obtained, in which the effectiveness is highest.

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Measurement of thermal conductivity, viscosity and density of ionic liquid [EMIM][DEP]-based nanofluids

Cited by 53 publications

References 30 publications

Optimization of Thermophysical and Rheological Properties of Mxene Ionanofluids for Hybrid Solar Photovoltaic/Thermal Systems

Optimization of Thermophysical and Rheological Properties of Mxene Ionanofluids for Hybrid Solar Photovoltaic/Thermal Systems

Ionic Liquids-Based Nanocolloids—A Review of Progress and Prospects in Convective Heat Transfer Applications

Investigating the effect of nanoparticle on thermo-economic optimization of fin and tube heat exchanger

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