TY - GEN
T1 - Experimental study of hygroscopy of single and different mixtures of MgCl2, KCl, NaCl, ZnCl2 for application as heat transfer fluids in CSP
AU - Wang, Xiaoxin
AU - Hu, Qichao
AU - Kim, Gil Pyo
AU - Xu, Xiankun
AU - Li, Peiwen
AU - Gervasio, Dominic
N1 - Funding Information:
The authors are pleased to acknowledge the financial support for this research project from Department of Energy (DOE) Grant No. DE-EE0005942. We also thank the University of Arizona for providing the experimental facilities.
Publisher Copyright:
Copyright © 2018 ASME.
PY - 2018
Y1 - 2018
N2 - Eutectic molten chloride salts by MgCl2, ZnCl2, KCl, and NaCl are considered as promising high temperature heat transfer and thermal storage fluid in concentrated solar power (CSP) systems. However, chloride salts MgCl2 and ZnCl2 are water affinity, so they can absorb water from surroundings easily. This will increase the corrosion of metals when the molten salts stay with metals at high temperatures. Our study also found that the presence of trace water in the solid salt caused vapor pressure of the molten salts increase. The current work presents studies about the kinetic processes of water absorption and removal from single and different mixture of NaCl, KCl, MgCl2 and ZnCl2 salts. The process of water uptake from ambient air and removal through heating are measured quantitatively. Water removal from molten salts through sparging with argon gas was employed as a further treatment method.
AB - Eutectic molten chloride salts by MgCl2, ZnCl2, KCl, and NaCl are considered as promising high temperature heat transfer and thermal storage fluid in concentrated solar power (CSP) systems. However, chloride salts MgCl2 and ZnCl2 are water affinity, so they can absorb water from surroundings easily. This will increase the corrosion of metals when the molten salts stay with metals at high temperatures. Our study also found that the presence of trace water in the solid salt caused vapor pressure of the molten salts increase. The current work presents studies about the kinetic processes of water absorption and removal from single and different mixture of NaCl, KCl, MgCl2 and ZnCl2 salts. The process of water uptake from ambient air and removal through heating are measured quantitatively. Water removal from molten salts through sparging with argon gas was employed as a further treatment method.
KW - Molten salt
KW - Sparging method
KW - Water removal
KW - Water uptake
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U2 - 10.1115/IMECE2018-86416
DO - 10.1115/IMECE2018-86416
M3 - Conference contribution
AN - SCOPUS:85063161457
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Energy
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2018 International Mechanical Engineering Congress and Exposition, IMECE 2018
Y2 - 9 November 2018 through 15 November 2018
ER -