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Abstract: The thermophysical properties of crushed salt were measured as it reconsolidated. The main focus of the work was to determine the thermal conductivity of the salt at temperatures ranging from -75 to 300ºC. It was determined that the thermal conductivity of reconsolidated crushed salt decreased with increasing porosity, but increased as the salt consolidated. At each porosity that was measured, the thermal conductivity was found to decrease with increasing temperature. The experimental results were used to develop a model for the estimation of the thermal conductivity of the salt as a function of temperature and porosity. It was found that the experimental and calculated values were in good agreement with each other.

Reference: Sandia Report SAND2014-2240 (2014) Sandia National Laboratories, U.S. Department of Energy