Indian Journal of Science and Technology
Year: 2015, Volume: 8, Issue: Supplementary 9, Pages: 1-13
Nasser Mostafavinia1* , Saman Eghvay2 and Amir Hassanzadeh1
1 Young Researchers and Elite Club, Mahabad Branch, Islamic Azad University, Mahabad, Iran; [email protected], [email protected]
2 Department of Mechanical Engineering, College of Engineering, Urmia University, Urmia, Iran; [email protected]
Thermal energy can be stored in the three forms of sensible heat, latent heat and thermo-chemical reactions. The latent heat, i.e. the heat that is stored during phase change process, plays an important role in melting process. In the Present work, melting of a NePCM in a square cavity with different horizontal angles with two heat source-sink pairs flush-mounted on the horizontal sidewalls is investigated numerically. Four different cases are studied: Case 1. Where the sources and sinks are separately placed on two horizontal sidewalls; Case 2. Where the sources and sinks are alternately placed on two horizontal sidewalls; Case 3. Where the sources are placed on the left sides of the sinks on the horizontal sidewalls; and Case 4 where the sources and sinks are placed on down horizontal sidewalls. It is found that Case 1 with 2% weight of Al 2 O3 nanoparticle has most liquid fraction ratio comparing to the other cases. In all the cases studied, the volumetric concentration of nanoparticles of 2% would result in the highest melting rate.
Keywords: Heat Source-Sink Pairs, Nano-Enhanced Phase Change Material, Numerical Analysis
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