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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

DOI: 10.1016/j.enconman.2013.04.007