Thermal Conductivity and Viscosity of Aqueous of Mg(NO3)2, Sr(NO3)2, Ca(NO3)2, and Ba(NO3)2 Solutions

Abstract

The experimental data of thermal conductivity and dynamic viscosity of aqueous solutions of the alkaline earth metals' nitrates in temperature range (298.15 to 598.15) K, pressure (0.1 to 40) MPa, and molality for H2O + Mg(NO3)2 (0.7507, 1.689, 2.8950, and 4.5040) mol·kg-1, for H2O + Sr(NO3)2 (0.525, 1.181, 2.025, and 3.150) mol·kg-1, for H2O + Ca(NO3)2 (0.6771, 1.5235, 2.598, and 4.063) mol·kg-1, and for H2O + Ba(NO3)2 (0.0781, 0.1594, 0.2442, and 0.3327) mol·kg-1 have been summarized. The measured values of thermal conductivity and viscosity were compared with data and correlations reported in the literature. A relationship between relative dynamic viscosity and relative thermal conductivity is established. A correlation equation relating relative dynamic viscosity and thermal conductivity of aqueous solutions was obtained as a function of temperature and composition. The equation describes values of viscosity within ± 2.2 %.