Experimental investigation on viscosity of water-based Al2O3 and TiO2 nanofluids

Jarahnejad, Mariam; Haghighi, Ehsan Bitaraf; Saleemi, Mohsin; Nikkam, Nader; Khodabandeh, Rahmatollah; Palm, Björn; Toprak, Muhammet S.; Muhammed, Mamoun

doi:10.1007/s00397-015-0838-y

Cited by 71 publications

(53 citation statements)

References 44 publications

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“…There are also some other examples for the combined use of the three techniques. It can be found form Table 2 that Mo et al [77, 78], Kim et al [91], Mushed et al [92], Jarahnejad et al [93], Ghadimi et al [90], and Said et al [94] utilized all of the three dispersion techniques to achieve the best dispersion effect.…”

Section: Preparation Of Tio2 Nanofluidsmentioning

confidence: 99%

“…Jarahnejad et al [93] carried out a detailed study on the effect of temperature on the viscosity and the relative viscosity of TiO 2 respectively. And the results are shown in Fig.…”

Section: Physical Properties Of Tio2 Nanofluidsmentioning

confidence: 99%

“…However, for lower shear rate region, a great temperature dependency behavior of viscosity of TiO 2 nanofluids was exhibited especially at high temperatures

Fig. 9Dynamic viscosity ( a ) and relative viscosity ( b ) for TiO 2 water-based nanofluids at different temperatures [93]. Reproduced with permission from Springer …”

Section: Physical Properties Of Tio2 Nanofluidsmentioning

confidence: 99%

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Toward TiO2 Nanofluids—Part 1: Preparation and Properties

Yang

2017

Nanoscale Res Lett

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As a new generation of working fluid, nanofluid has long been regarded as a hot research topic in the past three decades. Many review papers have provided comprehensive and systematic summaries on the development and state-of-the-art of nanofluids. As of today, it is becoming increasingly difficult to provide a comprehensive review of all kinds of nanofluids owing to the huge amounts of the related literatures. And many controversies and inconsistencies in the reported arguments have been observed in various nanofluids. Meanwhile, the systematic or comprehensive reviews on a certain kind of nanofluid are insufficient. Therefore, this review focuses on the research about one of the hottest kinds viz. TiO2 nanofluid, which has captured scientists’ great attention because of its interesting and comprehensive properties such as sensational dispersivity, chemical stability, and non-toxicity. Due to the preparation of nanofluids is the prerequisite and physical properties are critical factors for further applications, this first part of the review summarizes recent research on preparation, stability, and physical properties of TiO2 nanofluids.

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Section: Preparation Of Tio2 Nanofluidsmentioning

confidence: 99%

“…Jarahnejad et al [93] carried out a detailed study on the effect of temperature on the viscosity and the relative viscosity of TiO 2 respectively. And the results are shown in Fig.…”

Section: Physical Properties Of Tio2 Nanofluidsmentioning

confidence: 99%

“…However, for lower shear rate region, a great temperature dependency behavior of viscosity of TiO 2 nanofluids was exhibited especially at high temperatures

Fig. 9Dynamic viscosity ( a ) and relative viscosity ( b ) for TiO 2 water-based nanofluids at different temperatures [93]. Reproduced with permission from Springer …”

Section: Physical Properties Of Tio2 Nanofluidsmentioning

confidence: 99%

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Toward TiO2 Nanofluids—Part 1: Preparation and Properties

Yang

2017

Nanoscale Res Lett

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“…Figures 18 and 19 shows the variation in viscosity as a function of temperature and particle concentration [66,67,82,[99][100][101]105,112,117,118], respectively. In Figure 18 the error bars represent the upper and lower values of viscosity with particle concentration at the specific temperature, while in Figure 19 the ends of the bars showed the maximum and minimum values of viscosity with temperature at the specific value of particle concentration, for the particular study.…”

Section: Duangthongsuk Andmentioning

confidence: 99%

“…Jarahnejad et al [82] investigated the effect of temperature, size of nanoparticles, the addition of surfactants and concentration on the dynamic viscosity of water-based TiO 2 . The nanofluids of TiO 2 were formulated by using a two-step method and stabilized by adding polycarboxylate and tri-oxadecane acid, adjusting pH value and dispersing the nanoparticles into the base fluid while sonicated.…”

Section: Combination Usagementioning

confidence: 99%

Preparation Techniques of TiO2 Nanofluids and Challenges: A Review

et al. 2018

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Titanium dioxide (TiO 2 ) has been used extensively because of its unique thermal and electric properties. Different techniques have been used for the preparation of TiO 2 nanofluids which include single-step and two-step methods. In the natural world, TiO 2 exists in three different crystalline forms as anatase, brookite, and rutile. Nanoparticles are not used directly in many heat transfer applications, and this provides a major challenge to researchers to advance towards stable nanofluid preparation methods. The primary step involved in the preparation of nanofluid is the production of nano-sized solid particles by using a suitable technique, and then these particles are dispersed into base fluids like oil, water, paraffin oil or ethylene glycol. However, nanofluid can also be prepared directly by using a liquid chemical method or vapor deposition technique (VDT). Nanofluids are mostly used in heat transfer applications and the size and cost of the heat transfer device depend upon the working fluid properties, thus, in the past decade scientists have made great efforts to formulate stable and cost-effective nanofluids with enhanced thermophysical properties. This review focuses on the different synthesis techniques and important physical properties (thermal conductivity and viscosity) that need to be considered very carefully during the preparation of TiO 2 nanofluids for desired applications.

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Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe₂O₃ nanofluid

Shet,

Shetty K.

2024

Can J Chem Eng

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Volumetric oxygen mass transfer coefficient (kLa) is an important parameter in the design of various reactors and bioreactors. In the present work, the influence of α‐Fe2O3 nanofluid on the enhancement of kLa is studied in a pulsed plate column (PPC). An enhancement factor of greater than one showed that the nanofluid is favourable in enhancing the mass transfer rate. The effect of pulsing velocity on kLa is observed to fall under two regimes: the dispersion regime and emulsion regime. The kLa enhancement factor is found to be higher in TiO2 nanofluid than in α‐Fe2O3 nanofluid, indicating that the type of nanofluid influences the enhancement factor. The order of magnitude analysis showed that localized convection triggered by the Brownian motion of nanoparticles is the phenomenon responsible for kLa enhancement. A dimensionless multiple regression analysis (MRA) model was developed to predict kLa in the nanoparticle loading range of 0.003–0.019 (v/v%), relating the Sherwood number with oscillating Reynolds number (1200 ≤ Reo ≤ 20,000), gas flow Reynolds number (0.135 ≤ Reg ≤0.370), Schmidt number (1300 ≤ Sc ≤2700), and Brownian Reynolds number (2.81 × 10−4 ≤ ReB ≤5 × 10−4). The pseudo‐homogeneous model could accurately predict the enhancement until critical loading conditions.

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Experimental investigation on viscosity of water-based Al2O3 and TiO2 nanofluids

Cited by 71 publications

References 44 publications

Toward TiO2 Nanofluids—Part 1: Preparation and Properties

Toward TiO2 Nanofluids—Part 1: Preparation and Properties

Preparation Techniques of TiO2 Nanofluids and Challenges: A Review

Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe₂O₃ nanofluid

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Experimental investigation on viscosity of water-based Al2O3 and TiO2 nanofluids

Cited by 71 publications

References 44 publications

Toward TiO2 Nanofluids—Part 1: Preparation and Properties

Toward TiO2 Nanofluids—Part 1: Preparation and Properties

Preparation Techniques of TiO2 Nanofluids and Challenges: A Review

Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe2O3 nanofluid

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Product

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Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe₂O₃ nanofluid