Preparation and thermal energy storage behaviour of stearic acid–TiO2 nanofluids as a phase change material for solar heating systems.

Highlights: [•] Composite PCMs have exhibited enhanced heat transfer performance during energy storage and release processes. [•] Effective TiO2 nanoparticles dispersed into stearic acid have accelerated the melting and solidification rates of composite PCMs. [•] Higher thermal conductivities were observed in composite PCMs while comparing to base material. [•] Better thermal stability was achieved in composite PCMs for long-term utility period. [Copyright &y& Elsevier]