Enhanced thermal conductivities of graphene oxide nanofluids

Hajjar, Zeinab; Rashidi, Alimorad; Ghozatloo, Ahmad

doi:10.1016/j.icheatmasstransfer.2014.07.018

Cited by 191 publications

(56 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Outer diameter (nm) Hajjar et al [38] conducted experiments on graphene oxide nanofluids at temperatures of 10, 20, 30, and 40 • C, with varying concentrations of 0.05, 0.10, 0.15, 0.20, and 0.25 wt%, and concluded that a maximum thermal conductivity enhancement of 47.54% was observed for 0.25 wt% graphene oxide at a temperature of 40 • C. Kamtchi et al [39] conducted experimental studies on a graphene oxide-water nanofluid and reported thermal conductivity enhancements of 0.82%-3.51%, 1.58%-6.71%, and 3.96%-10% for concentrations of 0.01, 0.1, and 0.3 g/L, respectively. The authors pointed out that these enhancements were higher compared to aqueous Al 2 O 3 , CuO, and diamond nanofluids for the same concentrations, and reasoned that this may be due to enhanced Brownian motion.…”

Section: S-swnts L-swnts Mwntsmentioning

confidence: 99%

Review on Synthesis, Thermo-Physical Property, and Heat Transfer Mechanism of Nanofluids

Patil

Seo²,

Kang

et al. 2016

Energies

View full text Add to dashboard Cite

Nanofluids are suspended nano-sized particles in a base fluid. With increasing demand for more high efficiency thermal systems, nanofluids seem to be a promising option for researchers. As a result, numerous investigations have been undertaken to understand the behaviors of nanofluids. Since their discovery, the thermo-physical properties of nanofluids have been under intense research. Inadequate understanding of the mechanisms involved in the heat transfer of nanofluids has been the major obstacle for the development of sophisticated nanofluids with the desired properties. In this comprehensive review paper, investigations on synthesis, thermo-physical properties, and heat transfer mechanisms of nanofluids have been reviewed and presented. Results show that the thermal conductivity of nanofluids increases with the increase of the operating temperature. This can potentially be used for the efficiency enhancement of thermal systems under higher operating temperatures. In addition, this paper also provides details concerning dependency of the thermo-physical properties as well as synthesis and the heat transfer mechanism of the nanofluids.

show abstract

Section: S-swnts L-swnts Mwntsmentioning

confidence: 99%

Review on Synthesis, Thermo-Physical Property, and Heat Transfer Mechanism of Nanofluids

Patil

Seo²,

Kang

et al. 2016

Energies

View full text Add to dashboard Cite

show abstract

“…Therefore, it has attracted significant attention to investigate the effect of GO on the thermal conductivity of composite. Hajjar et al [31] prepared GO nano fluid by adding GO into the water, and the thermal conductivity enhancement ratio is up to 47.5% compared with pure water at the 0.25 wt% of GO at 40°C. Zhang et al [32] added 1 wt% GO into the PVDF/CNT composite, the enhancement in thermal conductivity is very obvious compared with the PVDF/CNT composite at the same CNT content.…”

Section: Introductionmentioning

confidence: 99%

Thermal conductivity of epoxy adhesive enhanced by hybrid graphene oxide/AlN particles

Yuan

2016

Applied Thermal Engineering

View full text Add to dashboard Cite

“…The study also showed that the electrical conductivity of the f-HEG nanofluids had a significant enhancement of 8620% at 0.395 vol.% loading of f-HEG, in a base fluid of 70:30 mixture of EG and distilled water. Hajjar et al [62] studied the thermal conductivity of graphene oxide nanofluids, which comprised of graphene oxide obtained by the Hummers' method and water. They found that 0.25 wt.% of graphene oxide could enhance the thermal conductivity by 33.9% at 20°C and up to 47.5% at 40°C.…”

Section: Graphene and Graphene Metal Oxide-based Nanofluidsmentioning

confidence: 99%

Nanofluids Based on Carbon Nanostructures

Younes¹,

Ghaferi²,

Saadat³

et al. 2016

Advances in Carbon Nanostructures

View full text Add to dashboard Cite

A nanofluid consists in a liquid suspension of nanometer-sized particles. These fluids may contain (or not) surface-active agents to aid in the suspension of the particles. Nanometer-sized particles have higher thermal conductivity than the base fluids. Oxides, metals, nitrides, and nonmetals, like carbon nanotubes, can be used as nanoparticles in nanofluids. Water, ethylene glycol, oils, and polymer solutions can be used as base fluids. In this chapter, we summarize the recent studies of using CNTs and graphene to improve the thermal conductivity of nanofluids. Moreover, we refer to the studies about the effect of using magnetic fields on enhancing the thermal conductivity of nanofluids. Too much discrepancy about thermal conductivity of nanofluids can be found in the literature. For carbon nanofluids, unfortunately, no significant improvements on thermal conductivity are observed using low concentrations. Different improvement percentages have been reported. This variation in the thermal conductivity can be attributed to many factors, such as particle size temperature, pH, or zeta potential. We believe that more research efforts need to be made in order to, first, improve the thermal conductivity of nanofluids and, second, assess the effect of the different parameters and conditions on the thermal conductivity of nanofluids.

show abstract

Enhanced thermal conductivities of graphene oxide nanofluids

Cited by 191 publications

References 39 publications

Review on Synthesis, Thermo-Physical Property, and Heat Transfer Mechanism of Nanofluids

Review on Synthesis, Thermo-Physical Property, and Heat Transfer Mechanism of Nanofluids

Thermal conductivity of epoxy adhesive enhanced by hybrid graphene oxide/AlN particles

Nanofluids Based on Carbon Nanostructures

Contact Info

Product

Resources

About