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Omid Mahian - One of the best experts on this subject based on the ideXlab platform.

  • enhancement of pcm Solidification using inorganic nanoparticles and an external magnetic field with application in energy storage systems
    Journal of Cleaner Production, 2019
    Co-Authors: M Sheikholeslami, Omid Mahian
    Abstract:

    Abstract Heat recovery is one of the solutions to reduce Carbon dioxide emission, and using latent heat thermal energy storage systems (LHTESS) can be a promising way for heat recovery. In the present article, for the first Time, the effects of both inorganic nanoparticles as an additive to PCM (phase change materials) and magnetic field on the PCM Solidification rate inside a porous energy storage system have been modeled. For this purpose, the mixture of CuO nanoparticles and water was used as NEPCM (nanoparticle-enhanced PCM), and an external magnetic field was applied to the system. The unsteady process of Solidification inside the storage system was simulated by employing finite element method (FEM). The impacts of various parameters including Lorentz forces strength, CuO/water concentration, and Rayleigh number on the charging Time have been evaluated. Solid fraction, temperature, and streamline contours have been plotted to study the Solidification process locally. The results indicated that with augmenting the Hartmann number from 0 to 10, the Solidification Time was reduced up to 23.5% in average. On the other hand, the addition of nanoparticles to PCM with volume fractions up to 4% leads to, on average, a 14% decrease in the Solidification Time. The obtained results suggest to employ the magnetic field as an effective solution to accelerate the Solidification in energy storage systems while to reinforce the influence of magnetic field; nanoparticles can be added to the PCM. Finally, the Solidification Time was correlated with three main design parameters, i.e. nanoparticle volume fraction, Hartmann and Rayleigh numbers with a mathematical expression.

  • enhancement of pcm Solidification using inorganic nanoparticles and an external magnetic field with application in energy storage systems
    Journal of Cleaner Production, 2019
    Co-Authors: M Sheikholeslami, Omid Mahian
    Abstract:

    Abstract Heat recovery is one of the solutions to reduce Carbon dioxide emission, and using latent heat thermal energy storage systems (LHTESS) can be a promising way for heat recovery. In the present article, for the first Time, the effects of both inorganic nanoparticles as an additive to PCM (phase change materials) and magnetic field on the PCM Solidification rate inside a porous energy storage system have been modeled. For this purpose, the mixture of CuO nanoparticles and water was used as NEPCM (nanoparticle-enhanced PCM), and an external magnetic field was applied to the system. The unsteady process of Solidification inside the storage system was simulated by employing finite element method (FEM). The impacts of various parameters including Lorentz forces strength, CuO/water concentration, and Rayleigh number on the charging Time have been evaluated. Solid fraction, temperature, and streamline contours have been plotted to study the Solidification process locally. The results indicated that with augmenting the Hartmann number from 0 to 10, the Solidification Time was reduced up to 23.5% in average. On the other hand, the addition of nanoparticles to PCM with volume fractions up to 4% leads to, on average, a 14% decrease in the Solidification Time. The obtained results suggest to employ the magnetic field as an effective solution to accelerate the Solidification in energy storage systems while to reinforce the influence of magnetic field; nanoparticles can be added to the PCM. Finally, the Solidification Time was correlated with three main design parameters, i.e. nanoparticle volume fraction, Hartmann and Rayleigh numbers with a mathematical expression.

M Sheikholeslami - One of the best experts on this subject based on the ideXlab platform.

  • Time dependent conduction heat transfer during Solidification in a storage system using nanoparticles
    Microsystem Technologies-micro-and Nanosystems-information Storage and Processing Systems, 2019
    Co-Authors: M Sheikholeslami, Ahmad Shafee, S A Shehzad, F M Abbasi
    Abstract:

    In this research, nanofluid thermal behavior in an energy storage system is illustrated by means of FEM. CuO nanoparticles have been dispersed into the water to overcome the poor thermal conductivity. Role of Brownian motion is included for estimating characteristics of nanofluid. Results are shown as solid fraction, isotherm contours, average temperature and total energy profiles. Results showed that dispersing nanoparticles to pure PCM have important impact on heat transfer rate. As A and N enhances, total energy and Solidification Time decrease. Furthermore, in order to reach greatest Solidification rate, nanoparticles with dp = 40 nm should be used.

  • enhancement of pcm Solidification using inorganic nanoparticles and an external magnetic field with application in energy storage systems
    Journal of Cleaner Production, 2019
    Co-Authors: M Sheikholeslami, Omid Mahian
    Abstract:

    Abstract Heat recovery is one of the solutions to reduce Carbon dioxide emission, and using latent heat thermal energy storage systems (LHTESS) can be a promising way for heat recovery. In the present article, for the first Time, the effects of both inorganic nanoparticles as an additive to PCM (phase change materials) and magnetic field on the PCM Solidification rate inside a porous energy storage system have been modeled. For this purpose, the mixture of CuO nanoparticles and water was used as NEPCM (nanoparticle-enhanced PCM), and an external magnetic field was applied to the system. The unsteady process of Solidification inside the storage system was simulated by employing finite element method (FEM). The impacts of various parameters including Lorentz forces strength, CuO/water concentration, and Rayleigh number on the charging Time have been evaluated. Solid fraction, temperature, and streamline contours have been plotted to study the Solidification process locally. The results indicated that with augmenting the Hartmann number from 0 to 10, the Solidification Time was reduced up to 23.5% in average. On the other hand, the addition of nanoparticles to PCM with volume fractions up to 4% leads to, on average, a 14% decrease in the Solidification Time. The obtained results suggest to employ the magnetic field as an effective solution to accelerate the Solidification in energy storage systems while to reinforce the influence of magnetic field; nanoparticles can be added to the PCM. Finally, the Solidification Time was correlated with three main design parameters, i.e. nanoparticle volume fraction, Hartmann and Rayleigh numbers with a mathematical expression.

  • enhancement of pcm Solidification using inorganic nanoparticles and an external magnetic field with application in energy storage systems
    Journal of Cleaner Production, 2019
    Co-Authors: M Sheikholeslami, Omid Mahian
    Abstract:

    Abstract Heat recovery is one of the solutions to reduce Carbon dioxide emission, and using latent heat thermal energy storage systems (LHTESS) can be a promising way for heat recovery. In the present article, for the first Time, the effects of both inorganic nanoparticles as an additive to PCM (phase change materials) and magnetic field on the PCM Solidification rate inside a porous energy storage system have been modeled. For this purpose, the mixture of CuO nanoparticles and water was used as NEPCM (nanoparticle-enhanced PCM), and an external magnetic field was applied to the system. The unsteady process of Solidification inside the storage system was simulated by employing finite element method (FEM). The impacts of various parameters including Lorentz forces strength, CuO/water concentration, and Rayleigh number on the charging Time have been evaluated. Solid fraction, temperature, and streamline contours have been plotted to study the Solidification process locally. The results indicated that with augmenting the Hartmann number from 0 to 10, the Solidification Time was reduced up to 23.5% in average. On the other hand, the addition of nanoparticles to PCM with volume fractions up to 4% leads to, on average, a 14% decrease in the Solidification Time. The obtained results suggest to employ the magnetic field as an effective solution to accelerate the Solidification in energy storage systems while to reinforce the influence of magnetic field; nanoparticles can be added to the PCM. Finally, the Solidification Time was correlated with three main design parameters, i.e. nanoparticle volume fraction, Hartmann and Rayleigh numbers with a mathematical expression.

  • influence of cuo nanoparticles on heat transfer behavior of pcm in Solidification process considering radiative source term
    International Journal of Heat and Mass Transfer, 2018
    Co-Authors: M Sheikholeslami, Arman Ghasemi, Zhixiong Li, Ahmad Shafee, S Saleem
    Abstract:

    Abstract In this research, numerical simulation is examined for nanofluid hydrothermal treatment during Solidification. Time dependent mesh has been utilized. Various shapes of CuO nanoparticles are dispersed in water. Solid fraction and isotherm contours are shown for several values of fin length, radiation parameter and shape factor. Results demonstrate that minimum Solidification Time has been obtained for Platelet shape. Solid faction improves with increase of radiation parameter.

  • Solidification of nepcm under the effect of magnetic field in a porous thermal energy storage enclosure using cuo nanoparticles
    Journal of Molecular Liquids, 2018
    Co-Authors: M Sheikholeslami
    Abstract:

    Abstract Finite element method is applied to simulate Solidification of Nano-enhanced phase change material (NEPCM) in existence of magnetic field. Both active (magnetic field) and passive (nanofluid) techniques are used for heat transfer improvement. Darcy model is used for porous media and Koo–Kleinstreuer–Li (KKL) model is employed for nanofluid. Roles of Hartmann number, volume fraction of nanofluid and Rayleigh number are illustrated. Results confirm that as Hartmann number augments, total energy increases and Solidification process takes lower Time. Solidification Time has reverse relationship with Hartmann number and volume fraction of nanofluid.

A D Henderson - One of the best experts on this subject based on the ideXlab platform.

D D Ganji - One of the best experts on this subject based on the ideXlab platform.

  • effect of fin and hybrid nano particles on solid process in hexagonal triplex latent heat thermal energy storage system
    Journal of Molecular Liquids, 2020
    Co-Authors: Kh Hosseinzadeh, A R Mogharrebi, A Asadi, M Paikar, D D Ganji
    Abstract:

    Abstract This research deals with Solidification procedure of phase-changing material (PCM) in a Latent Heat Thermal Energy Storage System (LHTESS). Rectangular fin made of copper and triplex container are utilized in this study and also different volume fractions of Hybrid Nano-Particles (HNP) (TiO2-Go) are added to the water. In present research, water is regarded as PCM. The purpose of this research is to inquire the effect of HNPs, fins and shape factor of nanoparticles on acceleration of the Solidification process. As an innovation, a new hexagonal geometry along with fins is employed in LHTESS. Galerkin Finite Element Method (GFEM) is applied to solve the governing equations and coding is carried out by an open source application. Results indicated that applying fins and HNPs reduces the full Solidification Time up to 12% and also using lamina shaped HNPs reduces the full Solidification Time up to 4% more than brick shaped.

Jyotirmay Banerjee - One of the best experts on this subject based on the ideXlab platform.

  • thermal performance enhancement of shell and tube latent heat storage unit using longitudinal fins
    Applied Thermal Engineering, 2015
    Co-Authors: Manish K. Rathod, Jyotirmay Banerjee
    Abstract:

    Abstract Latent Heat Storage Unit (LHSU) employing Phase Change Materials (PCMs) is an effective means of thermal energy storage for solar applications. The practical use of such energy storage unit is however limited by the low thermal conductivity of the available PCMs. Significant augmentation in the heat transfer rate of PCMs is possible by installation of longitudinal fins. The augmentation in heat transfer for a shell and tube type LHSU is estimated by carrying out experimental analysis with three longitudinal fins installed on the heat transfer fluid (HTF) tube. The heat transfer augmentation is established in terms of melting and Solidification Time for varying fluid inlet temperatures and flow rates of heat transfer fluid (HTF). Experimental results show that the heat transfer augmentation is more sensitive to increase in HTF inlet temperature as compared to increase in mass flow rate of HTF. Solidification Time has been observed to reduce up to 43.6% by installation of three fins.