What is it about?
In recent years, there has been an increasing interest in understanding how the presence of nano-additives modifies the thermophysical properties such as the effective density, specific heat capacity, and thermal diffusivity of phase-change material (PCMs). This study investigated how the dispersion of nanoparticles could affect the heat transfer characteristics over different stages of the PCM solidification process in the triplex-tube as a modified-design heat exchanger.
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Why is it important?
Our findings show a saving in solidification time due to dispersing nanoparticles for all of the nanoparticle volume fractions studied. This saving appears to be more pronounced during the final periods of the solidification process when conduction becomes the dominant heat transfer mode.
Perspectives
The study reveals a positive effect for adding nanoparticles only when conduction takes the role as the dominant heat transfer mechanism in the PCM solidification. This adds a new information to our understanding of why and when heat transfer could enhance with adding nanoparticles to the PCM.
Dr. Jasim M. Mahdi
University of Baghdad
Read the Original
This page is a summary of: Solidification of a PCM with nanoparticles in triplex-tube thermal energy storage system, Applied Thermal Engineering, September 2016, Elsevier,
DOI: 10.1016/j.applthermaleng.2016.07.130.
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