A review on how the researchers prepare their nanofluids

Haddad, Zoubida; Abid, C.; Öztop, Hakan F.; Mataoui, Amina

doi:10.1016/j.ijthermalsci.2013.08.010

Cited by 268 publications

(98 citation statements)

References 145 publications

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“…The base fluid should be a clear liquid for better observation of nanoparticle stability. Nanoparticles dispersion procedure was conducted using a probe ultrasonic (400 W and 24 kHz) to break agglomerates of nanoparticles in the fluid and make stable suspension [28,29]. It was observed with naked eyes that the nanofluid was uniformly dispersed for 24 h and the complete sedimentation happened after three days.…”

Section: Nanofluid Preparationmentioning

confidence: 99%

Investigation of Asphaltene Adsorption onto Zeolite Beta Nanoparticles to Reduce Asphaltene Deposition in a Silica Sand Pack

Kashefi

Lotfollahi

Shahrabadi³

2018

Oil & Gas Science and Technology - Rev. IFP Energies nouvel

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-Zeolite beta nanoparticles were used as a new asphaltene adsorbent for reducing asphaltene deposition during fluid injection into a silica sand pack. At first, the asphaltene adsorption efficiency and capacity of zeolite beta nanoparticles were determined by UV-Vis spectrophotometer. It was found that the proper concentration of nanoparticles for asphaltene adsorption was 10 g/L and the maximum asphaltene adsorption onto zeolite beta was 1.98 mg/m 2 . Second, two dynamic experiments including co-injection of crude oil and n-heptane (as an asphaltene precipitant) with and without use of zeolite beta nanoparticles in the sand pack was carried out. The results showed that the use of zeolite beta nanoparticles increased the permeability ratio and outlet fluid's asphaltene content about 22% and 40% compared to without use of nanoparticles, respectively. Moreover, a model based on monolayer asphaltene adsorption onto nanoparticles and asphaltene deposition mechanisms including surface deposition, entrainment and pore throat plugging was developed to determine formation damage during co-injection of crude oil and n-heptane into the sand pack. The proposed model presented good prediction of permeability and porosity ratios with AAD% of 1.07 and 0.07, respectively.

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Section: Nanofluid Preparationmentioning

confidence: 99%

Investigation of Asphaltene Adsorption onto Zeolite Beta Nanoparticles to Reduce Asphaltene Deposition in a Silica Sand Pack

Kashefi

Lotfollahi

Shahrabadi³

2018

Oil & Gas Science and Technology - Rev. IFP Energies nouvel

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“…The authors conclude that direct steam generation is more efficient than the other two. In spite of that, and although other alternatives are being studied [8][9][10][11][12][13][14], most of the PTC plants use some sort of synthetic oil, mainly due to its lower freezing point (around 12˝C) when compared to other HTFs.…”

Section: Description Of the Heat Transfer Fluid (Htf)-heating Processmentioning

confidence: 99%

Dynamic Modeling of the Solar Field in Parabolic Trough Solar Power Plants

Barcia

Menéndez²,

Esteban

et al. 2015

Energies

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Parabolic trough solar power plants use a thermal fluid to transfer thermal energy from solar radiation to a water-steam Rankine cycle in order to drive a turbine that, coupled to an electrical generator, produces electricity. These plants have a heat transfer fluid (HTF) system with the necessary elements to transform solar radiation into heat and to transfer that thermal energy to the water-steam exchangers. In order to get the best possible performance in the Rankine cycle and, hence, in the thermal plant, it is necessary that the thermal fluid reach its maximum temperature when leaving the solar field (SF). Also, it is mandatory that the thermal fluid does not exceed the maximum operating temperature of the HTF, above which it degrades. It must be noted that the optimal temperature of the thermal fluid is difficult to obtain, since solar radiation can change abruptly from one moment to another. The aim of this document is to provide a model of an HTF system that can be used to optimize the control of the temperature of the fluid without interfering with the normal operation of the plant. The results obtained with this model will be contrasted with those obtained in a real plant.

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“…nanofluids) are fundamental to a wide range of applications, from materials processing, chemical reactions to heat transfer intensifications [1,2]. Most of the formation processes are based on a two-step method [3]. In this method, nanoparticles need to be produced first, followed by complicated processes including particle purification, separation, drying, packaging and storage, which produced many agglomerations.…”

Section: Introductionmentioning

confidence: 99%

“…The one-step method, which produces and disperses nanoparticle into the required fluid simultaneously, looks very appealing. Most of the one-step methods have been focused on dispersing particles into a single base fluid [3].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of stable iron oxide nanoparticle dispersions in high ionic media

Nourafkan

Asachi

Gao

et al. 2017

Journal of Industrial and Engineering Chemistry

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Graphical abstract2 ABSTRACT A novel one-pot method was developed in this work to synthesize and disperse nanoparticles in a binary base fluid. As an example, stable magnetite iron oxide (Fe3O4) dispersions, i.e., nanofluids, were produced in a high ionic media of binary lithium bromide-water using a microemulsion-mediated method. The effects of temperature and precursor concentration on morphology and size distribution of produced nanoparticles were evaluated. An effective steric repulsion force was provided by the surface functionalization of nanoparticles during the phase transfer, supported by the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory. The formed nanoparticles exhibited a superior stability against agglomeration in the presence of high concentrations of lithium bromide, i.e., from 20 to 50 wt.%, which make them good candidates for a range of novel applications.

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A review on how the researchers prepare their nanofluids

Cited by 268 publications

References 145 publications

Investigation of Asphaltene Adsorption onto Zeolite Beta Nanoparticles to Reduce Asphaltene Deposition in a Silica Sand Pack

Investigation of Asphaltene Adsorption onto Zeolite Beta Nanoparticles to Reduce Asphaltene Deposition in a Silica Sand Pack

Dynamic Modeling of the Solar Field in Parabolic Trough Solar Power Plants

Synthesis of stable iron oxide nanoparticle dispersions in high ionic media

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