Effect of synthesis protocol in enhancing heat capacity of molten salt nanofluids

Baha El Far, Syed Muhammad Mujtaba Rizvi, Yousof Nayfeh, Donghyun Shin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Concentrated solar power (CSP) incorporated with thermal energy storage (TES) is an appealing solar energy generation technology. TES stores heat during the daytime and releases it in the nighttime. As a result, CSP can produce continuously even at night. Storing heat by TES makes CSP a unique technology among various renewable energy sources which often suffer from the intermittency of energy supply (e.g., wind turbines without wind, photovoltaics at night, etc.). The energy conversion efficiency of CSP is directly related to the properties of the TES medium. Binary or ternary mixtures of molten salts (Solar Salt) are commonly used as the TES in CSP due to its high-temperature stability. Enhancing the thermophysical properties of the molten salt medium can significantly improve TES performance. Various studies have reported the anomalous specific heat enhancement of molten salt-based nanofluids. However, the underlying mechanism for this enhancement was yet discovered. In this study, the effect of different synthesis conditions on the resultant specific heat capacity of molten salt-based nanofluids was investigated. Several molten salt nanofluids (NaNO3 -KNO3 with SiO nanoparticles at 1 wt. % concentration) were prepared at different thermal cycling conditions and their thermal performance was characterized by a differential scanning calorimeter (DSC).

Original languageEnglish
Title of host publicationASME 2020 14th International Conference on Energy Sustainability, ES 2020
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791883631
DOIs
StatePublished - 2020
EventASME 2020 14th International Conference on Energy Sustainability, ES 2020 - Virtual, Online
Duration: Jun 17 2020Jun 18 2020

Publication series

NameASME 2020 14th International Conference on Energy Sustainability, ES 2020

Conference

ConferenceASME 2020 14th International Conference on Energy Sustainability, ES 2020
CityVirtual, Online
Period06/17/2006/18/20

Keywords

  • Heat Capacity
  • Molten Salt
  • Nanofluid
  • Thermal Energy Storage

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