Enhancement of Heat Transfer in PEG 1000 Using Nano-Phase Change Material for Thermal Energy Storage

• Published in: Arabian journal for science and engineering (2011) 2022-12, Vol.47 (12), p.15899-15913
• Main Authors: Sheik, Mohammed Anees, Aravindan, M. K., Beemkumar, N., Chaurasiya, Prem Kumar, Dhanraj, Joshuva Arockia
• Format: Article
• Language: English
• Subjects: Aluminum oxide; Comparative studies; Energy storage; Engineering; Heat conductivity; Heat storage; Heat transfer; Humanities and Social Sciences; Latent heat; Melt temperature; Melting; multidisciplinary; Nanoparticles; Phase change materials; Research Article-Mechanical Engineering; Science; Silicon dioxide; Solidification; Thermal conductivity; Thermal energy; Thermophysical properties
• ISSN: 2193-567X; 1319-8025; 2191-4281
• DOI: 10.1007/s13369-022-06810-9

Heat transfer rates during the solidification and melting processes are decreased because to the PCMs lower thermal conductivity. The influence of nano-SiO 2 and nano-Al 2 O 3 additions on the thermophysical characteristics of pure PCM is investigated in this study. Nanoparticles such as SiO 2 and Al 2 O 3 are used as an additive in PCM with a mass fraction of 2, 5, 10, 15, 20 wt.%. A comparative study on thermal conductivity of NPCM is performed theoretically and experimentally, where Maxwell Eucken model and EMT model was found excellent agreement between the theoretical and experimental data of SiO 2 NPCM and Al 2 O 3 NPCM, respectively. It is found that the loading of nano-SiO 2 and nano-Al 2 O 3 with PCM, the thermal conductivity of NPCM had increased by 69% and 111% for the mass fraction of 20 wt.%, respectively, and the melting process of NPCM is accelerated with the increase in the mass concentration of nanoparticles. The shortest peak melting temperature realized using 15 wt.% mass fraction of SiO 2 NPCM and at 20 wt.% mass fraction of Al 2 O 3 NPCM, which was 4.05% and 5.13% shorter than pure PCM, respectively. It is also noticed that there is 6.7 and 6.2% reduction in latent heat storage at 20 wt.% mass concentration of SiO 2 NPCM and Al 2 O 3 NPCM, respectively, when compared with pure PCM. The high thermal conductivity and superior performance of NPCM make them optimum.