Journal
THERMAL SCIENCE
Volume 17, Issue 2, Pages 419-430Publisher
VINCA INST NUCLEAR SCI
DOI: 10.2298/TSCI110417004A
Keywords
latent heat storage system; phase change material; paraffin wax; paraffin wax with Al2O3; concentric pipe heat exchanger; melting-freezing cycle
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Funding
- Department of Science and Technology, New Delhi, India
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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 nano-alumina (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 phase change materials.
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