Thermal Science 2013 Volume 17, Issue 2, Pages: 419-430
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Numerical performance study of paraffin wax dispersed with alumina in a concentric pipe latent heat storage system
Valan Arasu Amirtham, Sasmito Agus P., Mujumdar Arun S.
Latent heat energy storage systems using paraffin wax could have lower heat
transfer rates during melting/freezing processes due to its inherent low
thermal conductivity. The thermal conductivity of paraffin wax can be
enhanced by employing high conductivity materials such as alumina (Al2O3). A
numerical analysis has been carried out to study the performance enhancement
of paraffin wax with nanoalumina (Al2O3) particles in comparison with simple
paraffin wax in a concentric double pipe heat exchanger. Numerical analysis
indicates that the charge-discharge rates of thermal energy can be greatly
enhanced using paraffin wax with alumina as compared with a simple paraffin
wax as PCM.
Keywords: latent heat storage system, phase change material, paraffin wax, paraffin wax with Al2O3, concentric pipe heat exchanger, melting-freezing cycle