Thermal and Transport Properties of NaCl-KCl-ZnCl2 Eutectic Salts for New Generation High-Temperature Heat-Transfer Fluids

Peiwen Li, Edgar Molina, Kai Wang, Xiankun Xu, Ghazal Dehghani, Amit Kohli, Mohamad H. Kassaee, Sheldon M. Jeter, Amyn S. Teja

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32 Scopus citations


Three eutectic salts from a system of halide salts NaCl-KCl-ZnCl2 were chosen for detailed study of thermal and transport properties with the objective of developing a next generation higherature heat-transfer fluid (HTF) for concentrated solar thermal power (CSP) technology. The acceptable range of the working temperatures for the HTF is from below 250 °C to at least 800 °C. The tested properties are presented here for the three candidate eutectic salts, including melting point, heat of fusion, heat capacity, vapor pressure, viscosity, density, and thermal conductivity. Data-fitted equations are provided for all the measured properties for convenience in engineering application. It is concluded that the three eutectic salts can satisfy the needs for a higherature HTF and thus are recommended as a new generation higherature HTF.

Original languageEnglish (US)
Article number054501
JournalJournal of Solar Energy Engineering, Transactions of the ASME
Issue number5
StatePublished - Oct 1 2016


  • CSP
  • Heat-transfer fluid
  • NaCl-KCl-ZnCl
  • eutectic molten salts
  • thermal and transport properties

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology


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