Viscosity of multi-component molten nitrate salts : liquidus to 200 degrees C.

Bradshaw, Robert W.

Sandia National Laboratories

关键词: 25 Energy Storage;    Sodium;    Nitrates;    Potassium;    Salts;   

DOI  :  10.2172/983680
RP-ID  :  SAND2010-1129
RP-ID  :  AC04-94AL85000
RP-ID  :  983680

美国|英语

来源: UNT Digital Library

【 摘 要 】

The viscosity of molten salts comprising ternary and quaternary mixtures of the nitrates of sodium, potassium, lithium and calcium was determined experimentally. Viscosity was measured over the temperature range from near the relatively low liquidus temperatures of he individual mixtures to 200C. Molten salt mixtures that do not contain calcium nitrate exhibited relatively low viscosity and an Arrhenius temperature dependence. Molten salt mixtures that contained calcium nitrate were relatively more viscous and viscosity increased as the roportion of calcium nitrate increased. The temperature dependence of viscosity of molten salts containing calcium nitrate displayed curvature, rather than linearity, when plotted in Arrhenius format. Viscosity data for these mixtures were correlated by the Vogel-Fulcher- ammann-Hesse equation.