Category: Transient Plane Source
Keywords: density, Differential scanning calorimeter (DSC), Expanded graphite (EG), graphite, Isothermal, latent heat, LTES, mass fraction, Nitrates, pcms, phase change materials, Potassium nitrate (KNO3), Sodium nitrate (NaNO3), Solar energy storage, Temperature, Thermal characterization, Thermal Conductivity, thermal energy storage, thermal storage, Transient plane source (TPS), Transient plane source (TPS) method
Abstract: Nitrate materials play an important role in the development of latent thermal energy storage (LTES) systems. This paper examined the thermo-physical properties of sodium nitrate, potassium nitrate and their mixtures with expanded graphite (EG) additives for their applications in solar energy storage. The transient hot-wire method measured the apparent thermal conductivities of the nitrates and nitrates/EG mixtures. Results showed that nitrates/EG mixture PCMs with the highest concentrations of EG exhibited the largest thermal conductivity enhancement.
Reference: Energy Conversion and Management, 73 (2013) 86-94