The effect of nanoparticle morphology on the specific heat of nanosalts

Hamed Riazi, Sara Mesgari, Noor A. Ahmed, Robert A. Taylor

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)

Abstract

Enhancing the specific heat capacity of molten salts by nanoparticle dispersion has emerged as a means to reduce the capital costs of thermal storage for concentrating solar thermal power plants, enabling cheaper solar electricity. Although several studies have shown near 30% enhancement in the specific heat of nanosalts other studies have reported a decrease of similar magnitude. In order to explain discrepancies reported in the literature, this study investigates the influence of various nanoparticle morphologies and preparation methods on the specific heat of nanosalts, which has not been systematically explored. To date, the extent of initial dispersion and the dispersion stability have only been reported on an ad-hoc basis in the literature. In the present study surface chemistry and sonication energy are controlled independently during preparation. By controlling both of these factors, the change of specific heat in nanosalts, results of this study present achieving up to 18% enhancement in specific heat of nanosalts by preparing an optimal nanosalt with distinctive nanoparticles.

Original languageEnglish
Pages (from-to)254-261
Number of pages8
JournalInternational Journal of Heat and Mass Transfer
Volume94
DOIs
Publication statusPublished - 1 Mar 2016
Externally publishedYes

Keywords

  • Nanofluid
  • Solar salt
  • Specific heat capacity
  • Thermal energy storage

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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