Mathematical Models and Numerical Solutions of Liquid-Solid and Solid-Liquid Phase Change

Surana, Karan S.; Joy, A. D.; Quiros, Luis A.; Reddy, J. N.

doi:10.18186/jte.71504

Cited by 5 publications

(1 citation statement)

References 27 publications

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“…For this reason, the solar heater needs an upgrade at the stage of producing and storing thermal energy. Therefore, there are several ways to manage the thermal energy among these methods, the production and storage of thermal energy by using phase change materials (PCMs) [4,5]. They are materials that can store solar energy as latent heat and become liquid by increasing the temperature.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Thermal Energy Storage by Integrating PCM Into Solar System

Zohra

Riad

Alhamany

et al. 2020

Journal of Thermal Engineering

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The solar heater is a system that generates hot water by converting solar energy to thermal energy. In these last few years, various ways have been developed to gather this natural energy. However, they can not be able to store the energy when the sun disappears. In this study, thermal system based on phase change materials that improves the hot water production and stores thermal energy is proposed. In order to describe phase change materials and considers the effects of inclination angle on the production and storing thermal energy a numerical study has been carried out using the ANSYS-Fluent software. In addition, details concerning the choice of calculation range, mesh size, boundary conditions and turbulence model have been provided. The numerical results have been compared with previous data that was very promising.

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Section: Introductionmentioning

confidence: 99%

Improvement of Thermal Energy Storage by Integrating PCM Into Solar System

Zohra

Riad

Alhamany

et al. 2020

Journal of Thermal Engineering

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Simulation of PCM‐saturated porous solid matrix for thermal energy storage using the phase‐field method

Sweidan

Heider

Markert

2018

Proc Appl Math and Mech

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Latent heat storage systems using phase change materials (PCMs) are considered an attractive technique for storing the available thermal energy due to their high energy storage capacity, compactness and ability to store heat at an almost constant temperature. However, the PCMs suffer from their low thermal conductivity that affects the heat transfer rates and leads to slow charging and discharging processes. Therefore, many approaches have been adopted for improving the low thermal conductivity of PCMs. In the underlying research work, a latent heat storage medium using a PCM-saturated highly conductive porous metal foam is being studied. High porosity cellular metal foams are proved to be promising materials for enhancing the heat transfer performance of the PCMs due to their high surface area to volume ratio, ultra light weight and relatively high thermal conductivity. A macroscopic description of the PCM-saturated porous material with intrinsically coupled and incompressible solid and fluid constituents is presented, based on the Theory of Porous Media (TPM). The heat transfer process between the metal foam and the PCM is described using the local thermal non-equilibrium model, where the phase-field method (PFM) is employed to account for the phase change process. The PFM relies on specification of the free energy density function and employs a phase-field variable that defines the state of the material (solid or liquid). Finally, numerical examples using the finite element method are presented to show the ability of the phase-field-porous media approach in simulating the phase change problems on the macro scale.

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