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Feasibility Studies of Encapsulated Particles With Heat Absorbing Medium at 800–1300°C for Concentrating Solar Power Technology

[+] Author Affiliations
Arturo Sepulveda, Sanjay Shantha-Kumar, Vinod Kumar, Arturo Bronson

The University of Texas at El Paso, El Paso, TX

Zhiwen Ma

National Renewable Energy Laboratory, Golden, CO

Paper No. FEDSM2013-16151, pp. V01CT26A001; 7 pages
  • ASME 2013 Fluids Engineering Division Summer Meeting
  • Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives
  • Incline Village, Nevada, USA, July 7–11, 2013
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5556-0
  • Copyright © 2013 by ASME


The feasibility of using liquid Al or B2O3 encapsulated in SiC particles was studied by using thermodynamic analysis and fluid-solid analysis at temperatures ranging from 800 to 1300°C. Alloy melts of the Al-Si and Fe-Al-Si systems were considered for absorbing and desorbing energy for a high temperature energy storage (TES) unit incorporated in a concentrating solar power scheme. Boria was also evaluated instead of metallic melts and compared with the traditional NaNO3-KNO3 molten salt as a TES medium. In addition to determining the enthalpies for sensible heat and phase transformations, the phase equilibrium was determined for possible reactions at the liquid Al/SiC and B2O3/SiC interfaces by calculating their thermodynamic stability. The transport of encapsulated SiC particles within a fluid and their effect on the thermal conductivity is discussed toward the efficacy of the thermal energy storage.

Copyright © 2013 by ASME



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