A review on nanofluids - part I: theoretical and numerical investigations

Wang, Xiang Qi; Mujumdar, Arun S.

doi:10.1590/s0104-66322008000400001

Cited by 528 publications

(216 citation statements)

References 83 publications

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“…The delicate preparation of a nanofluid is important because nanofluids need special requirements such as an even suspension, stable suspension, low agglomeration of particles, and no chemical change of the fluid [80]. Coagulation/agglomeration is a main problem during preparation of nanofluids [81]. Unstability of nanofluids will lose their potential benefits when they are injected into reservoirs.…”

Section: Preparation Of Nanofluidsmentioning

confidence: 99%

Application of Nanoparticles in Enhanced Oil Recovery: A Critical Review of Recent Progress

et al. 2017

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Abstract:The injected fluids in secondary processes supplement the natural energy present in the reservoir to displace oil. The recovery efficiency mainly depends on the mechanism of pressure maintenance. However, the injected fluids in tertiary or enhanced oil recovery (EOR) processes interact with the reservoir rock/oil system. Thus, EOR techniques are receiving substantial attention worldwide as the available oil resources are declining. However, some challenges, such as low sweep efficiency, high costs and potential formation damage, still hinder the further application of these EOR technologies. Current studies on nanoparticles are seen as potential solutions to most of the challenges associated with these traditional EOR techniques. This paper provides an overview of the latest studies about the use of nanoparticles to enhance oil recovery and paves the way for researchers who are interested in the integration of these progresses. The first part of this paper addresses studies about the major EOR mechanisms of nanoparticles used in the forms of nanofluids, nanoemulsions and nanocatalysts, including disjoining pressure, viscosity increase of injection fluids, preventing asphaltene precipitation, wettability alteration and interfacial tension reduction. This part is followed by a review of the most important research regarding various novel nano-assisted EOR methods where nanoparticles are used to target various existing thermal, chemical and gas methods. Finally, this review identifies the challenges and opportunities for future study regarding application of nanoparticles in EOR processes.

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Section: Preparation Of Nanofluidsmentioning

confidence: 99%

Application of Nanoparticles in Enhanced Oil Recovery: A Critical Review of Recent Progress

et al. 2017

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“…This finding survey makes nano-fluid much more attractive as a cooling fluid for devices with high energy density. The significant improvement of thermal conductivity [10][11][12][13], convective heat transfer [14][15][16] and boiling heat transfer [17][18][19][20][21] using nano-fluids were investigated. The experimental results showed that the thermal resistance of heat pipe with nano-fluids was lower than that of pipes containing pure water.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Copper Nano-fluid on Thermosyphons Thermal Performance

Klinbun¹,

Terdtoon²

2017

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Abstract.A new way to remove the intense heat by developing and implementing an innovative low cost compact loop thermosyphon has been widely observed. Especially, it was concluded that nano-fluids are potential heat transfer fluids to be used as working fluid in thermosyphon. Therefore, the thermophysical or transport properties of nanofluids in thermosyphon need to be discussed. In present work was to experimental study the thermal performance of thermosyphon using a copper nano-fluid as a working fluid. The experiment was performed in order to measure the temperature distribution and compare heat transfer rate of the thermosymphon with nano-fluid and with pure water. The concentration of copper nano-particle was 10, 30 and 50 ppm. The tested working temperature was 60, 70 and 80C. Results shown that the concentration of 50 ppm of copper nano-fluid improved thermal performance compared with the case of pure water. The optimum and behavior of copper nano-fluid in thermosyphon is presented, which highlights all of the beforehand mentioned advantages.

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“…A huge amount of theoretical work (e.g. [3,4]), and experimental [5] works have been devoted to the subject. Most theoretical models are based on Maxwell's homogenization method [6,7].…”

Section: Introductionmentioning

confidence: 99%

The role of several heat transfer mechanisms on the enhancement of thermal conductivity in nanofluids

Machrafi

Lebon

2016

Continuum Mech. Thermodyn.

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A modelling of the thermal conductivity of nanofluids based on extended irreversible thermodynamics is proposed with emphasis on the role of several coupled heat transfer mechanisms: liquid interfacial layering between nanoparticles and base fluid, particles agglomeration and Brownian motion. The relative importance of each specific mechanism on the enhancement of the effective thermal conductivity is examined. It is shown that sizes of the nanoparticles and the liquid boundary layer around the particles play a determining role. For nanoparticles close to molecular range, the Brownian effect is important. At nanoparticles of the order of 1-100 nm, both agglomeration and liquid layering are influent. Agglomeration becomes the most important mechanism at nanoparticle sizes of the order of 100 nm and higher.The theoretical considerations are illustrated by three case-studies: suspensions of alumina rigid spherical nanoparticles in water, ethylene glycol and a 50/50 w% water/ethylene-glycol mixture, respectively, good agreement with experimental data is observed.

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A review on nanofluids - part I: theoretical and numerical investigations

Cited by 528 publications

References 83 publications

Application of Nanoparticles in Enhanced Oil Recovery: A Critical Review of Recent Progress

Application of Nanoparticles in Enhanced Oil Recovery: A Critical Review of Recent Progress

Experimental Study of Copper Nano-fluid on Thermosyphons Thermal Performance

The role of several heat transfer mechanisms on the enhancement of thermal conductivity in nanofluids

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