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The Thermophysical Properties of the NaNO3-KNO3, LiNO3-NaNO3, and LiNO3-KNO3 Systems

[+] Author Affiliations
Kevin Coscia, Satish Mohapatra

Dynalene, Inc., Whitehall, PA

Sudhakar Neti, Alparslan Oztekin, Spencer Nelle, Tucker Elliott

Lehigh University, Bethlehem, PA

Paper No. IMECE2011-64465, pp. 889-894; 6 pages
doi:10.1115/IMECE2011-64465
From:
  • ASME 2011 International Mechanical Engineering Congress and Exposition
  • Volume 4: Energy Systems Analysis, Thermodynamics and Sustainability; Combustion Science and Engineering; Nanoengineering for Energy, Parts A and B
  • Denver, Colorado, USA, November 11–17, 2011
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5490-7
  • Copyright © 2011 by ASME

abstract

The present work comprises of thermophysical properties of nitrate-based binary heat transfer fluids of various compositions. For various nitrate mixtures, specific heat, latent heat of fusion, and viscosity as a function of shear rate are reported at various temperatures. Phase diagrams have also been constructed for these binary mixtures using differential scanning calorimetry. It was found that the contribution of the lithium nitrate on the binary mixtures had the largest increase in specific heat. As with most fluids, viscosity significantly decreases with temperature. The latent heat of the binary mixtures cannot be determined by using simple mass-averaging. The results presented in this work are expected to make a significant impact on the development of economical and industrially viable nitrate mixtures for solar power applications.

Copyright © 2011 by ASME

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