Specific heat of nanofluids synthesized by dispersing alumina nanoparticles in alkali salt eutectic

Donghyun Shin, Debjyoti Banerjee

Research output: Contribution to journalArticlepeer-review

172 Scopus citations

Abstract

In this study, we report large enhancement in specific heat capacity of a eutectic salt mixture on dispersing alumina nanoparticles at 1% mass concentration. Eutectic of lithium carbonate and potassium carbonate (62:38 by molar ratio) was dissolved in distilled water with alumina nanoparticles at 1.0% mass concentration and with a nominal diameter of ∼10 nm. The specific heat capacity measurement was performed using a differential scanning calorimeter (DSC). An alternate model involving in situ phase transformation was proposed which was found to be in good agreement with the variations observed in the experimental data for the different types of nanomaterial samples used in this study. These salt nanofluids can lead to the development of efficient thermal energy storage systems which in turn can enable significant reduction in the cost of solar power.

Original languageEnglish
Pages (from-to)210-214
Number of pages5
JournalInternational Journal of Heat and Mass Transfer
Volume74
DOIs
StatePublished - Jul 2014

Keywords

  • Molten salt
  • Nanofluid
  • Nanoparticle
  • Specific heat capacity
  • Thermal energy storage

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