Nanoparticle Dispersions on Ternary Nitrate Salts for Heat Transfer Fluid Applications in Solar Thermal Power

Ramaprasath Devaradjane, Donghyun Shin

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

In this study, we report enhancement in heat capacity of SiO2 nanoparticle dispersions in a molten ternary nitrate salt (NaNO3, KNO3, and Ca(NO3)2) to obtain an effective heat transfer fluid (HTF)/thermal energy storage (TES) for concentrated solar power (CSP) application. The enhanced heat capacity of the molten salt mixture is expected to greatly increase thermal storage density of HTF/TES, and thus the cost of electricity produced by CSP plant can be significantly reduced. A custom two-step method was used to synthesize SiO2 nanoparticle/ternary salt mixture. The nanoparticle concentration of the mixture was fixed at 1% by weight for comparison with the previous studies. A modulated differential scanning calorimeter (MDSC) was employed to measure heat capacity of the mixture, and it was found to be enhanced by ∼19% compared to the pure ternary salt.

Original languageEnglish
Article number051901
JournalJournal of Heat Transfer
Volume138
Issue number5
DOIs
StatePublished - May 2016

Keywords

  • concentrated solar power
  • heat capacity
  • heat transfer
  • molten salt
  • nanoparticle

Fingerprint

Dive into the research topics of 'Nanoparticle Dispersions on Ternary Nitrate Salts for Heat Transfer Fluid Applications in Solar Thermal Power'. Together they form a unique fingerprint.

Cite this