The paper analyzes existing methods for determining the thermal conductivity of aqueous solutions of KF. The article presents the results of an experimental study of the thermal conductivity of water and an aqueous solution of KF salt in the temperature range of 293-473K and pressures up to 100 MPa. Studies of the thermal conductivity of water were carried out by the method of coaxial cylinders in the absolute version. The main attention is paid to solutions with a high salt content. The regularities in the behavior of temperature and pressure coefficients of thermal conductivity of the studied binary solutions are established.Regression dependences are obtained that describe the connections between the thermal conductivity of water and the KF-water solution. With their help, the optimal technical parameters of power plants can be determined. Compared with existing methods for calculating thermal conductivity, the range of parameters has been expanded. The results of the experimental data are included in the recommended reference data at the All-Russian Research Center for Standardization, Information and Certification of Raw Materials, Materials and Substances.
thermal conductivity, binary solution, temperature, pressure
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