Nanofluid based on activated hybrid of biomass carbon/graphene oxide: Synthesis, thermo-physical and electrical properties

Yarmand, Hooman; Gharehkhani, Samira; Shirazi, Seyed Farid Seyed; Amiri, Ahmad; Montazer, Elham; Arzani, H.; Sadri, Rad; Dahari, Mahidzal; Kazi, S.N.

doi:10.1016/j.icheatmasstransfer.2016.01.004

Cited by 82 publications

(19 citation statements)

References 42 publications

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“…In addition, we would like to recommend using hybrid carbon nanomaterials to synthesize working fluids for direct absorption solar thermal collectors. The thermal properties of the hybrid carbon nanofluids are greater than that of carbon nanofluids, as reported in the studies of Yarmand et al [ 203 ], Sajid and Ali [ 204 ], Han et al [ 205 ], Devarajan et al [ 206 ], Baby and Ramaprabhu [ 207 ], and Sundar et al [ 208 ].…”

Section: Challenges and Recommendations For Future Workmentioning

confidence: 84%

Carbon Nanomaterial-Based Nanofluids for Direct Thermal Solar Absorption

et al. 2020

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Recently, many scientists have been making remarkable efforts to enhance the efficiency of direct solar thermal absorption collectors that depends on working fluids. There are a number of heat transfer fluids being investigated and developed. Among these fluids, carbon nanomaterial-based nanofluids have become the candidates with the most potential by the heat absorbing and transfer properties of the carbon nanomaterials. This paper provides an overview of the current achievements in preparing and exploiting carbon nanomaterial-based nanofluids to direct thermal solar absorption. In addition, a brief discussion of challenges and recommendations for future work is presented.

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Section: Challenges and Recommendations For Future Workmentioning

confidence: 84%

Carbon Nanomaterial-Based Nanofluids for Direct Thermal Solar Absorption

et al. 2020

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“…The addition of NPs powder in certain amount of base fluid was carried out by using ultrasonication followed by magnetic stirring. In another work, activated carbon and graphene-based hybrid nanofluids (ACG/EG) were synthesized by Yarmand et al (2016) by using EG as base fluid. The graphene flakes were used for the preparation of graphene oxide using standard Hummers method ( Chen et al, 2013 ).…”

Section: Advantages Disadvantages and Requirements Of Different Base Fluidsmentioning

confidence: 99%

“… SEM images of (A) activated carbon (AC) and (B) activated carbon graphene (ACG) ( Yarmand et al, 2016 ). …”

Section: Nanofluids Applications In Solar Energymentioning

confidence: 99%

Hybrid Nanofluids as Renewable and Sustainable Colloidal Suspensions for Potential Photovoltaic/Thermal and Solar Energy Applications

et al. 2021

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The comparative utilization of solar thermal or photovoltaic systems has significantly increased to fulfill the requirement of electricity and heat since few decades. These hybrid systems produce both thermal and electrical energy simultaneously. In recent times, increasing interest is being redirected by researchers in exploiting variety of nanoparticles mixed with miscellaneous base fluids (hybrid nanofluid) for these hybrid systems. This new class of colloidal suspensions has many fascinating advantages as compared to conventional types of nanofluids because of their modified and superior rheological and thermophysical properties which makes them appealing for solar energy devices. Here, we have attempted to deliver an extensive overview of the synthetic methodologies of hybrid nanofluids and their potential in PV/T and solar thermal energy systems. A detailed comparison between conventional types of nanofluids and hybrid nanofluids has been carried out to present in-depth understanding of the advantages of the hybrid nanofluids. The documented reports reveal that enhanced thermal properties of hybrid nanofluids promise the increased performance of solar thermal PV/T systems. Additionally, the unique properties such as nanoparticles concentration and type of base fluid, etc. greatly influence the behavior of hybrid nanofluidic systems. Finally, the outlook, suggestions, and challenges for future research directions are discussed.

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“…They explained that the enhancement in thermal conductivity was due to surface layering around nanoparticles that was formed by base fluid molecules, and these surface nanolayers have higher thermal conductivity than the base fluid [ 10 ]. Yarmand et al [ 114 ] incorporated carbon that was synthesized from empty fruit bunches with graphene to produce a surfactant-free activated carbon-graphene oxide hybrid nanofluids (ACG/EG). They observed an increase in thermal conductivity with weight concentrations.…”

Section: Thermo-physical Properties Of Nanofluidsmentioning

confidence: 99%

“…They stated that good dispersion of nanoparticles with the least agglomeration reduced the particle interference in the shear-strain fluid system, thereby minimizing the increase in viscosity from the base fluids. Meanwhile, Yarmand et al [ 114 ] synthesized carbon from waste materials to produce a hybrid nanofluids with graphene in ethylene glycol at various weight concentrations. They reported a minimal increase in the viscosity of hybrid nanofluids with the weight concentrations.…”

Section: Thermo-physical Properties Of Nanofluidsmentioning

confidence: 99%

Recent Progress on Stability and Thermo-Physical Properties of Mono and Hybrid towards Green Nanofluids

Zainon

Azmi

2021

Micromachines

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Many studies have shown the remarkable enhancement of thermo-physical properties with the addition of a small quantity of nanoparticles into conventional fluids. However, the long-term stability of the nanofluids, which plays a significant role in enhancing these properties, is hard to achieve, thus limiting the performance of the heat transfer fluids in practical applications. The present paper attempts to highlight various approaches used by researchers in improving and evaluating the stability of thermal fluids and thoroughly explores various factors that contribute to the enhancement of the thermo-physical properties of mono, hybrid, and green nanofluids. There are various methods to maintain the stability of nanofluids, but this paper particularly focuses on the sonication process, pH modification, and the use of surfactant. In addition, the common techniques to evaluate the stability of nanofluids are undertaken by using visual observation, TEM, FESEM, XRD, zeta potential analysis, and UV-Vis spectroscopy. Prior investigations revealed that the type of nanoparticle, particle volume concentration, size and shape of particles, temperature, and base fluids highly influence the thermo-physical properties of nanofluids. In conclusion, this paper summarized the findings and strategies to enhance the stability and factors affecting the thermal conductivity and dynamic viscosity of mono and hybrid of nanofluids towards green nanofluids.

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Nanofluid based on activated hybrid of biomass carbon/graphene oxide: Synthesis, thermo-physical and electrical properties

Cited by 82 publications

References 42 publications

Carbon Nanomaterial-Based Nanofluids for Direct Thermal Solar Absorption

Carbon Nanomaterial-Based Nanofluids for Direct Thermal Solar Absorption

Hybrid Nanofluids as Renewable and Sustainable Colloidal Suspensions for Potential Photovoltaic/Thermal and Solar Energy Applications

Recent Progress on Stability and Thermo-Physical Properties of Mono and Hybrid towards Green Nanofluids

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