Recent advances in modeling and simulation of nanofluid flows—Part II: Applications

Mahian, Omid; Kolsi, Lioua; Amani, Mohammad; Estellé, Patrice; Ahmadi, Goodarz; Kleinstreuer, Clement; Marshall, Jeffrey S.; Taylor, Robert A.; Abu‐Nada, Eiyad; Rashidi, Saman; Niazmand, Hamid; Wongwises, Somchai; Hayat, Tasawar; Kasaeian, Alibakhsh; Pop, Ioan

doi:10.1016/j.physrep.2018.11.003

Cited by 410 publications

(114 citation statements)

References 165 publications

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“…Intensive works have been conducted to improve the utilization of solar energy . The concentrated solar power (CSP) technology is advantageous because it can provide heat of medium to high temperature for industry utilization, such as desalination and electricity generation .…”

Section: Introductionmentioning

confidence: 99%

“…Intensive works have been conducted to improve the utilization of solar energy. [1][2][3][4][5][6][7][8] The concentrated solar power (CSP) technology is advantageous because it can provide heat of medium to high temperature for industry utilization, such as desalination and electricity generation. [9][10][11] As the most dominant CSP technology, 12 the parabolictrough solar collector applied a reflective parabolic mirror to concentrate the solar rays to the receiver tube which is located at the focal line of the parabolic mirror.…”

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of direct‐absorption parabolic‐trough solar collectors considering concentric nanofluid segmentation

et al. 2020

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Summary Nanofluids have been actively used in direct‐absorption solar collectors. In a direct‐absorption parabolic‐trough solar collector (DAPTSC) for medium‐high temperature regime, the nanofluids used to be contained in a transparent glass receiver located at the focal line of a parabolic mirror so that the solar radiation is concentrated to the glass receiver and absorbed volumetrically inside the collector. In order to further increase the thermal efficiency of a DAPTSC, we propose to insert an extra glass tube inside the nanofluid so that the nanofluid is separated into two concentric segmentations (ie, an inner section and an outer section), and apply a nanofluid of lower concentration in the outer section while a nanofluid of a higher concentration in the inner section. The proposed idea is numerically tested on four pairs of DAPTSCs (the variants obtained depending on whether there is a vacuum envelope and whether there is a reflective semicylindrical coating on the receiver). The results show that at the same particle concentration parameter, the DAPTSCs with two concentric segmentations of nanofluids outperform those with one uniform nanofluid for all configurations considered in this work. For a transparent case without an envelope, this efficiency increase is as high as 12.5% point when the inlet temperature is 350 K. In addition, parametric studies are performed for this best configuration to evaluate the effect of absorption coefficient, mass flow rate, collector length, solar irradiance, and convection heat transfer coefficient on the collector performance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative analysis of direct‐absorption parabolic‐trough solar collectors considering concentric nanofluid segmentation

et al. 2020

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“…Dawar et al [36] studied squeezing MHD carbon nanotube nanofluids. The other relevant studies can be seen in [37][38][39][40]. The most recent study on nanofluids and nanotubes with thermal conductivity can be seen in [41][42][43][44][45][46][47][48][49][50].…”

Section: Introductionmentioning

confidence: 99%

Impact of Nonlinear Thermal Radiation on MHD Nanofluid Thin Film Flow over a Horizontally Rotating Disk

et al. 2019

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Nanoscience can be stated as a superlative way of changing the properties of a working fluid. Heat transmission features during the flow of nanofluids are an imperative rule from the industrial and technological point of view. This article presents a thin film flow of viscous nanofluids over a horizontal rotating disk. The impact of non-linear thermal radiation and a uniform magnetic field is emphasized in this work. The governing equations were transformed and solved by the homotopy analysis method and the ND-Solve technique. Both analytical and numerical results are compared graphically and numerically, and excellent agreement was obtained. Skin friction and the Nusselt number were calculated numerically. It is concluded that the thin film thickness of nanofluids reduces with enhanced values of the magnetic parameter. In addition, the nanofluid temperature was augmented with increasing values of the thermal radiation parameter. The impact of emerging parameters on velocities and temperature profiles were obtainable through graphs and were deliberated on in detail.

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“…From the beginning of the emergence of this concept, researchers quickly figured out that the performance of thermal devices such as cooling of microchips, heating, and cooling of buildings, and solar heating, could be raised by dispersing nanopowder in a base fluid. [2][3][4] Solar distillation has benefited from the nanofluid technology as an affordable and reliable technique for providing freshwater. 4 Nanofluids offer many key advantages in solar power plants.…”

Section: Introductionmentioning

confidence: 99%

Optimal characteristics and heat transfer efficiency of SiO ₂ /water nanofluid for application of energy devices: A comprehensive study

et al. 2019

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Summary In a comprehensive study, the thermal conductivity, dynamic viscosity, and the rheological behavior of a SiO2/water nanofluid are investigated experimentally at the temperatures, solid concentrations, and the shear rates of 25°C to 50°C, 0% to 1.5%, and 400 to 1400(s−1), respectively. The Response Surface Methodology (RSM) is utilized to obtain regression models for the thermal conductivity and the dynamic viscosity. Subsequently, the sensitivity of the aforementioned models to 10% changes in the temperature, and the nanofluid concentration is analyzed. Afterward, Nondominated Sorting Genetic Algorithm II (NSGA‐II) is utilized to find the maximum thermal conductivity and the minimum viscosity. The nondominated optimal points are presented through a fitted correlation on a Pareto front to make the results more practical. The measurements of the investigated nanofluid could be summarized as a paper of a handbook. The workability of the investigated nanofluid is also examined in both laminar and turbulent flow regimes through analysis of the heat transfer merit graphs. To this end, the ratio of the dynamic viscosity enhancement to the thermal conductivity enhancement and the Mouromtseff number are chosen as two criteria of the laminar and turbulent flow regimes, respectively. Finally, the results are compared with those for SiO2/glycerin and SiO2/ethylene glycol nanofluids to check the workability in different base fluids. From a thermal‐efficiency point of view, the SiO2/water nanofluid is not suggested for use in both laminar and turbulent pipe flows, except in temperatures higher than 30°C and volume concentrations lower than 1% for the case of laminar flow. This is because the favorable heat transfer enhancement of the nanofluid is more than the unfavorable increase of the pumping power. From the rheological point of view, though, a SiO2/water nanofluid would be a good choice in lubricating moving surfaces for both laminar and turbulent flow regimes. It is found that in higher nanofluid concentrations, the thermal conductivity of a SiO2/water nanofluid is highly influenced by temperature. Moreover, adding nanoparticles at temperatures of 35°C to 40°C would have the highest increasing effect on the thermal conductivity. It is also revealed that increasing the temperature does not significantly affect the viscosity when 1% SiO2 nanoparticles are suspended within the water.

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Recent advances in modeling and simulation of nanofluid flows—Part II: Applications

Cited by 410 publications

References 165 publications

Comparative analysis of direct‐absorption parabolic‐trough solar collectors considering concentric nanofluid segmentation

Comparative analysis of direct‐absorption parabolic‐trough solar collectors considering concentric nanofluid segmentation

Impact of Nonlinear Thermal Radiation on MHD Nanofluid Thin Film Flow over a Horizontally Rotating Disk

Optimal characteristics and heat transfer efficiency of SiO ₂ /water nanofluid for application of energy devices: A comprehensive study

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Recent advances in modeling and simulation of nanofluid flows—Part II: Applications

Cited by 410 publications

References 165 publications

Comparative analysis of direct‐absorption parabolic‐trough solar collectors considering concentric nanofluid segmentation

Comparative analysis of direct‐absorption parabolic‐trough solar collectors considering concentric nanofluid segmentation

Impact of Nonlinear Thermal Radiation on MHD Nanofluid Thin Film Flow over a Horizontally Rotating Disk

Optimal characteristics and heat transfer efficiency of SiO 2 /water nanofluid for application of energy devices: A comprehensive study

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Optimal characteristics and heat transfer efficiency of SiO ₂ /water nanofluid for application of energy devices: A comprehensive study