Effect of temperature and mass fraction on viscosity of crude oil-based nanofluids containing oxide nanoparticles

Attari, Hassan; Derakhshanfard, Fahimeh; Darvanjooghi, Mohammad Hossein Karimi

doi:10.1016/j.icheatmasstransfer.2017.02.007

Cited by 51 publications

(12 citation statements)

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“…In order to obtain the mass transfer coefficient and diffusivity of CO2 or SO2 in a water based nanofluid, a set of experiments were performed in which the aforementioned gases were separately injected at the bottom of the column within the volumes of 20,25,30,35,40,45 and 50 mL. The mass transfer parameters were then calculated by obtaining the absorption of CO2 and SO2 as well as the implementation of the model suggested by Zhao et al [29].…”

Section: Measurement Of Mass Transfer Parametersmentioning

confidence: 99%

“…For the calculation of mass transfer coefficient, in separate runs, various volumes of gases (20,25,30,35,40,45 and 50 mL that are, respectively, equal to 7, 10, 12, 13, 15.6, 17.6 and 20 min total gas-liquid contact time) were injected into the column and then gas concentration and molar flux were measured. Figure 9 shows the average molar flux of CO 2 /SO 2 against the dissolved concentration of CO 2 /SO 2 in the liquid bulk.…”

Section: Mass Transfer Coefficientmentioning

confidence: 99%

“…As can be seen in this table, for nanoparticles with the higher density (ρ SiO2 = 2.196 g/cm 3 , ρ Al2O3 = 3.980 g/cm 3 , ρ Fe2O3 = 5.242 g/cm 3 ) more diffusivity of CO 2 within the nanofluid is observed which is attributed to the nanoparticles Brownian motion inducing more diffusion of CO 2 molecules at the bubble-liquid interface. It has been previously reported by Attari et al that the momentum caused by Brownian velocity of nanoparticles leading to produce micro-convections, depending on nanoparticles density according to the following relation [20]: According to this equation by having an increase in nanoparticles density, more momentum can be transferred through the liquid phase; and consequently, a higher magnitude of micro-convections produces. Previous efforts declared that only two significant mechanisms including Brownian micro-convections and grazing effect (absorption of gas molecules by nanoparticles at the bubble-liquid interface and desorption of them into the liquid) can be involved during the gas absorption when a nanofluid is used as an absorbent [2][3][4][5]10,11,36].…”

Section: Diffusivity Coefficientmentioning

confidence: 99%

“…They also revealed that the mass transfer rate of gaseous ammonia in 0.001 wt. % CNTs loaded in nanofluid was 20% higher than that of pure deionized water [18,19].Numerous researchers have focused on the application of nanofluids as a potential absorbent for the removal of acidic gases [6,11,12,[20][21][22][23]. Esmaeili-Faraj et al exhibited that the removal rate of H 2 S enhanced up to 40% when 0.02 wt.…”

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The Effect of Various Nanofluids on Absorption Intensification of CO2/SO2 in a Single-Bubble Column

2019

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Application of nanoparticles in aqueous base-fluids for intensification of absorption rate is an efficient method for absorption progress within the system incorporating bubble-liquid process. In this research, SO 2 and CO 2 were separately injected as single raising bubbles containing nanofluids to study the impact of nanoparticle effects on acidic gases absorption. In order to do this, comprehensive experimental studies were done. These works also tried to investigate the effect of different nanofluids such as water/Al 2 O 3 or water/Fe 2 O 3 or water/SiO 2 on the absorption rate. The results showed that the absorption of CO 2 and SO 2 in nanofluids significantly increases up to 77 percent in comparison with base fluid. It was also observed that the type of gas molecules and nanoparticles determine the mechanism of mass transfer enhancement by nanofluids. Additionally, our findings indicated that the values of mass transfer coefficient of SO 2 in water/Al 2 O 3 , water/Fe 2 O 3 and water/SiO 2 nanofluids are, respectively, 50%, 42% and 71% more than those of SO 2 in pure water (k LSO 2 −water = 1.45 × 10 −4 m/s). Moreover, the values for CO 2 in above nanofluids were, respectively, 117%, 103% and 88% more than those of CO 2 in water alone (k LCO 2 −water = 1.03 × 10 −4 m/s). Finally, this study tries to offer a new comprehensive correlation for mass transfer coefficient and absorption rate prediction.Processes 2019, 7, 393 2 of 21 of nanoparticles, leading to induce the micro-convections in nanofluids, has the most impact on mass transfer rate [14]. Ashrafmansouri et al. comprehensively studied previous research and reported an review to highlight the impacts of nanomaterials in heat and mass transfer processes [11]. They reported that much higher thorough studies are needed to disclose the impacts of main parameters including nanoparticles mean size and morphology on absorption rate by using nanofluids. They also exhibited that nanofluid reusing as well as absorption process modeling are the most important subjects for advancement of this technique. In addition, Kim et al. showed that mass transfer rate of ammonia is enhanced when a few nanoparticles are added to the basefluid. They exhibited that bubbles breaking by nanoparticles considerably enhances mass transfer through increasing interfacial area. They also reported that smaller bubbles were produced in nanofluid than in a base fluid, leading to intensification in mass transfer surface area [15].Ma et al. declared that by adding CNTs to a basefluid, the localized micro-convection occurs due to the Brownian motion of nanotubes [16]. They reported that induced convection can intensify the ammonia molecular diffusion within the nanofluid. Moreover, they concluded that the grazing effect can be considered another mechanism enhancing the efficiency of NH 3 by means of the bubble absorption process [16]. Absorption of gas molecules by means of the nanoparticle surfaces at the bubble interface and then removing the adsorbed gas components from the nanoparticles ...

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Section: Measurement Of Mass Transfer Parametersmentioning

confidence: 99%

Section: Mass Transfer Coefficientmentioning

confidence: 99%

Section: Diffusivity Coefficientmentioning

confidence: 99%

mentioning

confidence: 99%

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The Effect of Various Nanofluids on Absorption Intensification of CO2/SO2 in a Single-Bubble Column

2019

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“…Viscosity describes a fluid's internal resistance to flow. Many parameters affect the nanofluid's viscosity, including the preparation method, base fluid type, operating temperature, nanostructure size and geometry, filler fraction, acidity (pH value), shear rate, usage of additives or surfactants, and particle aggregation and sedimentation [3,93,[177][178][179][180][181]. It has been demonstrated that the viscosity of nanofluids increases with the nanoparticle volume fraction.…”

Section: Viscositymentioning

confidence: 99%

Thermal Transport and Challenges on Nanofluids Performance

Taha-Tijerina¹

2018

Microfluidics and Nanofluidics

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Progress in technology and industrial developments demands the efficient and successful energy utilization and its management in a greater extent. Conventional heattransfer fluids (HTFs) such as water, ethylene glycol, oils and other fluids are typically low-efficiency heat dissipation fluids. Thermal management is a key factor in diverse applications where these fluids can be used, such as in automotive, microelectronics, energy storage, medical, and nuclear cooling among others. Furthermore, the miniaturization and high efficiency of devices in these fields demand successful heat management and energy-efficient materials. The advent of nanofluids could successfully address the low thermal efficiency of HTFs since nanofluids have shown many interesting properties, and the distinctive features offering extraordinary potential for many applications. Nanofluids are engineered by homogeneously suspending nanostructures with average sizes below 100 nm within conventional fluids. This chapter aims to focus on a detail description of the thermal transport behavior, challenges and implications that involve the development and use of HTFs under the influence of atomistic-scale structures and industrial applications. Multifunctional characteristics of these nanofluids, nanostructures variables and features are discussed in this chapter; the mechanisms that promote these effects on the improvement of nanofluids thermal transport performance and the broad range of current and future applications will be included.

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Nanofluids Containing Titanium Dioxide: Thermo-Physical Properties and Energy Saving Applications

Leong¹,

Azmi²

2017

Handbook of Ecomaterials

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Effect of temperature and mass fraction on viscosity of crude oil-based nanofluids containing oxide nanoparticles

Cited by 51 publications

References 41 publications

The Effect of Various Nanofluids on Absorption Intensification of CO2/SO2 in a Single-Bubble Column

The Effect of Various Nanofluids on Absorption Intensification of CO2/SO2 in a Single-Bubble Column

Thermal Transport and Challenges on Nanofluids Performance

Nanofluids Containing Titanium Dioxide: Thermo-Physical Properties and Energy Saving Applications

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