A novel comprehensive experimental study concerned graphene oxide nanoparticles dispersed in water: Synthesise, characterisation, thermal conductivity measurement and present a new approach of RLSF neural network

Liu, Wanli; Malekahmadi, Omid; Bagherzadeh, Seyed Amin; Ghashang, Majid; Karimipour, Arash; Hasani, Saeed; Tlili, Iskander; Goodarzi, Marjan

doi:10.1016/j.icheatmasstransfer.2019.104333

Cited by 71 publications

(23 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ultrasonication is unique homogenization technique utilized in variety of applications. It is a process which break large particle into smaller fragment or better uniform sized particles in the base fluid [29] , [30] . Sonication of nanofluid is achieved by providing sound energy to agitate the nanoparticles in the suspension [31] , [32] , [33] .…”

Section: Introductionmentioning

confidence: 99%

Ultrasonication an intensifying tool for preparation of stable nanofluids and study the time influence on distinct properties of graphene nanofluids – A systematic overview

Sandhya

Ramasamy

Sudhakar

et al. 2021

Ultrasonics Sonochemistry

105

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Ultrasonication an intensifying tool for preparation of stable nanofluids and study the time influence on distinct properties of graphene nanofluids – A systematic overview

Sandhya

Ramasamy

Sudhakar

et al. 2021

Ultrasonics Sonochemistry

105

View full text Add to dashboard Cite

show abstract

“…This is probably due to the transport mechanisms in the nanofluids being different to that produced in the fluid. Thus, thermal conductivity enhancement (TCE) was estimated for the nanofluids prepared according to

[ 66 , 67 , 68 ], where k nf is the thermal conductivity for the nanofluids and k bf is the thermal conductivity for the base fluid. The values obtained of TCE are shown in Figure 7 b.…”

Section: Resultsmentioning

confidence: 99%

The Role of the Interactions at the Tungsten Disulphide Surface in the Stability and Enhanced Thermal Properties of Nanofluids with Application in Solar Thermal Energy

et al. 2020

View full text Add to dashboard Cite

Transition metal dichalcogenides (TMCs) exhibit unique properties that make them of interest for catalysis, sensing or energy storage applications. However, few studies have been performed into nanofluids based on TMCs for heat transfer applications. In this study, nanofluids based on 2D-WS2 are prepared by liquid phase exfoliation to analyze their potential usage in concentrating solar power plants. Periodic-Density Functional Theory (DFT) calculations were performed to rationalize the success of the exfoliation process. The hydrogen bond interaction between the hydroxyl group from PEG, which acts as a surfactant, and the S atoms of the WS2 surface stabilizes the nanosheets in the fluid. Electron localization function (ELF) analysis is indicative of the stability of the S–H interaction from WS2 with the molecules of surfactant due to the tendency to interact through weak intermolecular forces of van der Waals solids. Moreover, improvements in thermal properties were also found. Isobaric specific heat increased by up to 10% and thermal conductivity improved by up to 37.3%. The high stability of the nanofluids and the thermal improvements were associated with the high surface area of WS2 nanosheets. These results suggest that these nanofluids could be a promising heat transfer fluid in concentrating solar power plants.

show abstract

“…Some of the significant studies with respect to graphene nanoparticles are given in the following section; Graphene oxide-water nanofluid was synthesized by Liu et al [43] using modified Hummers method. They have investigated the stability of the prepared nanofluids using UV Spectroscopy and showed that nanofluid stability is>3 months and also 1.0 mg/ml nanofluid can work in applications with operational range up to 1000 °C.…”

Section: Introductionmentioning

confidence: 99%

Studies on thermophysical property variations of graphene nanoparticle suspended ethylene glycol/water

Periasamy¹,

Ramesh²

2021

CI&CEQ

View full text Add to dashboard Cite

The objective of the study is to determine the thermo physical property variations (such as viscosity, density, specific heat capacity and thermal conductivity) of graphene suspended base fluid (Ethylene Glycol (EG) /Water (W)), with respect to graphene nanoparticle concentration and hot fluid inlet temperature. Graphene nanoparticle concentrations (0.2, 0.4, 0.6, 0.8 and 1 volume %) and the base fluid of 30:70 volume % of EG: Water is prepared initially. The impact of graphene nano particle addition on base fluids based on experimentation in the commercial plate heat exchanger was studied. In this experiment, the hot fluid inlet temperature was varied at 55? C, 65? C and 75? C. The experimental results of thermo physical properties were compared with the selected models proposed in the literature. Einstein (1956); Kitano (1981); and Bachelor models (1977) have been used to consider the effect of viscosity. The measured density and Specific heat capacity was validated with Pak and Cho and Xuan model respectively. To consider the effect of thermal conductivity, three different models (Maxwell, 1954; Vajjah, 2010; and Sahoo, 2012) have been used. Study revealed that the thermo physical properties of base fluid significantly affects with the graphene nanoparticle suspension.

show abstract

A novel comprehensive experimental study concerned graphene oxide nanoparticles dispersed in water: Synthesise, characterisation, thermal conductivity measurement and present a new approach of RLSF neural network

Cited by 71 publications

References 69 publications

Ultrasonication an intensifying tool for preparation of stable nanofluids and study the time influence on distinct properties of graphene nanofluids – A systematic overview

Ultrasonication an intensifying tool for preparation of stable nanofluids and study the time influence on distinct properties of graphene nanofluids – A systematic overview

The Role of the Interactions at the Tungsten Disulphide Surface in the Stability and Enhanced Thermal Properties of Nanofluids with Application in Solar Thermal Energy

Studies on thermophysical property variations of graphene nanoparticle suspended ethylene glycol/water

Contact Info

Product

Resources

About