Thermal analysis on a nanofluid-filled rectangular cavity with heated fins of different geometries under magnetic field effects

Jing, Dengwei; Hu, Songwei; Hatami, M.; Xiao, Yuanxiang; Jia, Jianpeng

doi:10.1007/s10973-019-08758-9

Cited by 13 publications

(4 citation statements)

References 37 publications

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“…In recent years, various combinations of nanofluids as well as affecting parameters on the different structures are taken for analysisoriented with the thermal application such as solar collectors. They have been considered and developed, as a result, effective enhancement of heat transfer achieved by many research works (Rathnakumar et al, 2014;Kumar et al, 2018;Ghanbar et al, 2019;Hamid et al, 2019;Hussein et al, 2019;Jing et al, 2020;Ramin et al, 2020;Syam, Said, Saleh, Singh, Antonio Sousa;Abdulwahab et al, 2021;Azmi et al, 2021;Kamel et al, 2021;Seyed Reza et al, 2021). To the authors' knowledge, no research has been done on the examination of the position and number of perforations to optimize and to enhance the performance of a photovoltaic-thermal system (PV/T) by employing nanofiuid and a wavy-strip insert.…”

Section: Introductionmentioning

confidence: 99%

“…The outcomes show that the heat transfer rate was highest when the parallelogram ribs were used. Jing et al ( Jing et al, 2020 ) underlined the significance of the magnetic field and the shape of heating fins on the flow and heat transport in a rectangular enclosure loaded with nanofluid. Azmi et al ( Azmi et al, 2021 ) scrutinized the performance of TiO 2 –SiO 2 /water hybrid nanofluid with various composition ratios flowing inside a tube equipped with wire coil inserts.…”

Section: Introductionmentioning

confidence: 99%

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Numerical study of perforated obstacles effects on the performance of solar parabolic trough collector

et al. 2023

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The current work presents and discusses a numerical analysis of improving heat transmission in the receiver of a parabolic trough solar collector by introducing perforated barriers. While the proposed approach to enhance the collector’s performance is promising, the use of obstacles results in increased pressure loss. The Computational Fluid Dynamics (CFD) model analysis is conducted based on the renormalization-group (RNG) k-ɛ turbulent model associated with standard wall function using thermal oil D12 as working fluid The thermo-hydraulic analysis of the receiver tube with perforated obstacles is taken for various configurations and Reynolds number ranging from 18,860 to 81,728. The results are compared with that of the receiver without perforated obstacles. The receiver tube with three holes (PO3) showed better heat transfer characteristics. In addition, the Nusselt number (Nu) increases about 115% with the increase of friction factor 5–6.5 times and the performance evaluation criteria (PEC) changes from 1.22 to 1.24. The temperature of thermal oil fluid attains its maximum value at the exit, and higher temperatures (462.1 K) are found in the absorber tube with perforated obstacles with three holes (PO3). Accordingly, using perforated obstacles receiver for parabolic trough concentrator is highly recommended where significant enhancement of system’s performance is achieved.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical study of perforated obstacles effects on the performance of solar parabolic trough collector

et al. 2023

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“…Many studies performed RSM to model the thermophysical properties of nanofluids [22][23][24]. However, a limited number of them applied optimization in configuration while employing a nanofluid as a working fluid [25][26][27]. Kumar and Dinesha [28] optimized the thermal characteristics of heat transfer improvement in a double pipe heat exchanger using RSM.…”

Section: Researchers Nanofluid Type Configuration Type Main Resultsmentioning

confidence: 99%

Configuration and Optimization of a Minichannel Using Water–Alumina Nanofluid by Non-Dominated Sorting Genetic Algorithm and Response Surface Method

et al. 2020

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Nanofluids in minichannels with various configurations are applied as cooling and heating fluids. Therefore, it is essential to have an optimal design of minichannels. For this purpose, a square channel with a cylinder in the center connected to wavy fins at various concentrations of an Al2O3 nanofluid is simulated using the finite volume method (FVM). Moreover, central composite design (CCD) is used as a method of design of experiment (DOE) to study the effects of three input variables, namely the cylinder diameter, channel width, and fin radius on the convective heat transfer and pumping power. The impacts of the linear term, together with those of the square and interactive on the response variables are determined using Pareto and main effects plots by an ANOVA. The non-dominated sorting genetic algorithm-II (NSGA-II), along with the response surface methodology (RSM) is applied to achieve the optimal configuration and nanofluid concentration. The results indicate that the effect of the channel width and cylinder diameter enhances about 21% and 18% by increasing the concentration from 0% to 5%. On the other hand, the pumping power response is not sensitive to the nanofluid concentration. Besides, the channel width has the highest and lowest effect on the heat transfer coefficient (HTC) and pumping power, respectively. The optimization for a concentration of 3% indicates that in Re = 500 when the geometry is optimized, the HTC enhances by almost 9%, while the pumping power increases by about 18%. In contrast, by increasing the concentration from 1% to 3%, merely an 8% enhancement in HTC is obtained, while the pumping power intensifies around 60%.

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“…They concluded that the overall performance obtained with rectangular ribs was the best at Reynolds numbers less than 500 at the flow inlet, but the elliptical ribs were more effective at Reynolds numbers greater than 500. Jing et al, (2020) coupled the FEM and RSM approaches were to explore the performance of non-Newtonian nanofluid flow in a cavity with heated fins of various shapes and in the presence of a vertical magnetic field in terms of both natural convection heat transfer and entropy formation. The effects of various parameters such as the Hartmann number and (Park and Lee, 2017).…”

Section: Figurementioning

confidence: 99%

A design approach for thermal enhancement in heat sinks using different types of fins: A review

Gaikwad

Sathe²,

Sanap³

2023

Front. Therm. Eng.

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This article provides an in-depth overview of thermal heat sink design and optimization. Heat transfer enhancement strategies are discussed in detail, followed by fin design trends and geometries, and a discussion on different fin configurations and their merits is also presented. Important results and findings of experiments concerning the design and optimization of fin geometries have been summarized. For complex heat dissipation applications, researchers have been studying different fin arrangements especially, inclined fins, to maximize the performance of the heat sinks. Along with innovative fin designs, microchannels for heat dissipation are gaining attention due to their. Recent advances in this domain have been discussed. New components are becoming more compact and advanced as a result of technological breakthroughs in electronics and control systems; hence, the use and optimization of heat sinks for modern applications are also discussed in this article.

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Thermal analysis on a nanofluid-filled rectangular cavity with heated fins of different geometries under magnetic field effects

Cited by 13 publications

References 37 publications

Numerical study of perforated obstacles effects on the performance of solar parabolic trough collector

Numerical study of perforated obstacles effects on the performance of solar parabolic trough collector

Configuration and Optimization of a Minichannel Using Water–Alumina Nanofluid by Non-Dominated Sorting Genetic Algorithm and Response Surface Method

A design approach for thermal enhancement in heat sinks using different types of fins: A review

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