期刊
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
卷 51, 期 -, 页码 77-83出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ijthermalsci.2011.08.006
关键词
Unconstrained melting; NEPCM; Nano-particle; Phase change material; Melting inside sphere
This paper presents a numerical study of unconstrained melting of nano-enhanced phase change materials (NEPCM) inside a spherical container using RT27 and copper particles as base material and nano-particle, respectively. Numerical studies are performed for three different Stefan number and volume fraction of nano-particles with an initial sub-cooling of 6 degrees C. Transient numerical simulations are performed for axi-symmetric melting inside a sphere. The simulation results show that the nano-particles cause an increase in thermal conductivity of NEPCM compared to conventional PCM. The enhancement in thermal conductivity with a decrease in latent heat results in higher melting rate of NEPCM. (C) 2011 Elsevier Masson SAS. All rights reserved.
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