Construction and application of multi-component molten salt component-property database (MSCPD)

With the increasing global energy demand and the increasingly serious environmental problems, the development of sustainable energy has become an important issue in the contemporary world. Energy storage and conversion is the key issue of sustainable energy utilization, the conversion of chemical energy, heat energy, etc. into electrical energy, so that various energy sources are efficiently used, and released when needed to meet the demand for electrical energy. Molten salt energy storage is a technology that uses high-temperature molten salt to store heat energy. As a heat transfer storage medium with low melting point, high stability and low cost, mixed molten salt plays a key role in the field of Concentrated solar power (CSP) technology. It is very important to study the composition, ratio and related thermophysical properties of fused salt for promoting the development of fused salt energy storage. Most of the research focuses on the thermal properties of molten salt, but there is no database to collect the data. In this study, Molten Salt Component-Property Database (MSCPD) was established by collecting and screening samples of mixed molten salt, experimental verification and data verification. The database integrates various data on molten salts, including melting point, decomposition temperature, specific heat capacity, melting enthalpy, density, viscosity, thermal diffusivity, thermal conductivity, etc. This information enables researchers to obtain data about molten salt intuitively and quickly. At present, covering 31 elements and 6350 sets of molten salt formulations in the MSCPD. It is currently the largest physical properties database of molten salt used in the field of energy storage, and we will continue to pay attention to the latest research progress in the field of molten salt energy storage, and timely update the database content.