Effect of a rotating cylinder on the 3D MHD mixed convection in a phase change material filled cubic enclosure

Al‐Kouz, Wael; Abderrahmane, Aissa; Devi, S. Suriya Uma; Prakash, M.; Kolsi, Lioua; Moria, Hazim; Jamshed, Wasim; Younis, Obai

doi:10.1016/j.seta.2021.101879

Cited by 19 publications

(8 citation statements)

References 51 publications

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“…It was determined that when angular velocity increased, cumulative energy and average temperature decreased. [8] explored mixed convection of phase change material (PCM) in a 3D cavity filled with a revolving cylinder when a temperature gradient occurred between the hot right vertical wall and the cold left vertical wall while the remaining walls were deemed adiabatic. Phase change materials (PCM) are one of the most effective and active topics of study in terms of longterm heat energy storage and thermal management due to their great qualities.…”

Section: Background Informationmentioning

confidence: 99%

Effects of Branched Fins on Alumina and N-Octadecane Melting Performance Inside Energy Storage System

et al. 2022

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The importance of Phase change material (PCM) energy storage systems is no longer new in the industry. However, the influence of using branched fins inside the energy storage system on the melting process of alumina nanoparticles and n-octadecane has not been reported in the literature. Consequently, the outcome of a study on the numerical simulation for optimizing the melting performance of a PCM in various tubes, including those with branching fins is presented in this report. Four examples were assessed in relation to a suspension of alumina nanoparticles and n-octadecane paraffin that contains heated fins. A numerical technique based on the Galerkin finite element method (GFEM) was used to solve the dimensionless governing system. The average liquid percentage over the flow zone in question was computed. The primary results indicated that altering the number of heated fins might affect the flow structures, the system’s irreversibility, and the melting process. Case four, with eight heated fins, likewise produces the greatest average liquid fraction values and completes the melting process in 850s. Additionally, when 6% nano-enhanced PCM was used instead of pure PCM, the melting process is accelerated by 28.57 percent.

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Section: Background Informationmentioning

confidence: 99%

Effects of Branched Fins on Alumina and N-Octadecane Melting Performance Inside Energy Storage System

et al. 2022

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“…The subject of M-TES, especially using PCM, is currently under intensive development and is part of a large area, which is constantly enriched with new knowledge. The knowledge is related to M-TES, but also to nearby topics, such as improving the properties of PCM [21], improving the efficiency of the phase transformation process, and improving the design of heat storage [22][23][24]. The assumptions for using M-TES solution are described in detail later in the publication.…”

Section: Potential Direction Of Developmentmentioning

confidence: 99%

Mobilized Thermal Energy Storage for Waste Heat Recovery and Utilization-Discussion on Crucial Technology Aspects

Kuta

2022

Energies

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Changes observed in the Polish energy sector, including the demand for and use of heat, require the introduction of appropriate measures aimed at diversifying the available heat sources, increasing the share of renewable and low-emission sources in heat production, and increasing waste heat recovery and its usage. There is an increasing emphasis on issues such as reducing the carbon footprint, reducing pollution, reducing the use of raw materials, reducing waste heat, and improving the energy efficiency of businesses. Increasingly, the question arises—what technologies can be used as an answer to the identified problems and needs. The solution proposed in this publication to support these needs is the use of mobilized thermal energy storage (M-TES) technology. The use of this technology has great potential, but also involves a number of conditions that need to be taken into account when undertaking the design, construction, and use of this type of technology. The primary purpose of this publication is to provide a detailed description of mobilized thermal energy storage technology, together with a discussion of the various practical aspects associated with the design and use of M-TES. Technology was discussed both in terms of application, but also in terms of specific areas. In the first case—step-by-step, from the design stage to the end-of-life stage. In the second case—one area at a time, including: technical, legal, economic, and environmental. The discussion of the technology is preceded by an analysis of the existing solutions presented in this area. The state-of-the-art shows that, despite the growing interest in the subject, there are still a small number of solutions in this area that have been implemented and are in use. The conducted analysis shows that M-TES is a solution with great potential. However, it is necessary to develop it, especially in the technological, as well as economical, areas.

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“…The use of NEPCM rather than only heat transfer fluid offers several benefits in many applications. NEPCM benefits from both heat transfer fluid and PCM characteristics [ 14 , 15 , 16 , 17 ]. For instance, it was recently shown that these could improve thermal storage characteristics and also for applications such as triple tube heat exchangers [ 18 ] or shell-and-tube heat exchangers [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Natural Convection within Inversed T-Shaped Enclosure Filled by Nano-Enhanced Phase Change Material: Numerical Investigation

et al. 2022

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Energy saving has always been a topic of great interest. The usage of nano-enhanced phase change material NePCM is one of the energy-saving methods that has gained increasing interest. In the current report, we intend to simulate the natural convection flow of NePCM inside an inverse T-shaped enclosure. The complex nature of the flow results from the following factors: the enclosure contains a hot trapezoidal fin on the bottom wall, the enclosure is saturated with pours media, and it is exposed to a magnetic field. The governing equations of the studied system are numerically addressed by the higher order Galerkin finite element method (GFEM). The impacts of the Darcy number (Da = 10−2–10−5), Rayleigh number (Ra = 103–106), nanoparticle volume fraction (φ = 0–0.08), and Hartmann number (Ha = 0–100) are analyzed. The results indicate that both local and average Nusselt numbers were considerably affected by Ra and Da values, while the influence of other parameters was negligible. Increasing Ra (increasing buoyancy force) from 103 to 106 enhanced the maximum average Nusselt number by 740%, while increasing Da (increasing the permeability) from 10−5 to 10−2 enhanced both the maximum average Nusselt number and the maximum local Nusselt number by the same rate (360%).

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Effect of a rotating cylinder on the 3D MHD mixed convection in a phase change material filled cubic enclosure

Cited by 19 publications

References 51 publications

Effects of Branched Fins on Alumina and N-Octadecane Melting Performance Inside Energy Storage System

Effects of Branched Fins on Alumina and N-Octadecane Melting Performance Inside Energy Storage System

Mobilized Thermal Energy Storage for Waste Heat Recovery and Utilization-Discussion on Crucial Technology Aspects

Natural Convection within Inversed T-Shaped Enclosure Filled by Nano-Enhanced Phase Change Material: Numerical Investigation

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