Investigating the thermal behavior of phase change materials of ethylene glycol-filled SiO2 plates in the presence of solar radiation by molecular dynamics simulation

L Quan and ZY Pan, ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS, 150, 1-6 (2023).

DOI: 10.1016/j.enganabound.2023.01.027

Due to excessive energy consumption, today's world needs the importance of using renewable and environ-mentally friendly resources. Therefore, solar energy can be a suitable alternative to fossil and nuclear fuels. In this study, molecular dynamics (MD) simulation was used to investigate the thermal behavior of glass while using Ethylene Glycol- Filled SiO2 Plates as a phase change material (PCM); and when solar radiation of 1 W/m2 was present. The results depicted that the atomic and thermal behavior of glass filled with ethylene glycol in the presence of solar energy is optimized. In such a way, the structure's maximum density and velocity were 0.0628 atom/angstrom 3and 1.851 angstrom/fs, respectively. And the heat flux and thermal conductivity of the structure converged to 8790.83 W/m2 and 0.85 W/m.K after 10 ns. Then with the addition of solar energy, the density profile and velocity increased to 0.0630 atom/angstrom 3 and 2.010 angstrom/fs, respectively. Additionally, the heat flux increased to 9872.11 W/m2.

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