AI Summary & Key Takeaways
AI InsightConsequently, the PCM composite obtained by vacuumimpregnation method, can be used for thermal energy storage applications.
📌 3 Key Takeaways
Özet
In this presented experimental research, composites of phase change materials(PCMs) were prepared by impregnating glycerol and nickel salt into theexpanded perlite pores (EP). In this study, vacuum impregnation and wetimpregnation methods were used. Glycerol and nickel salt were inserted to thepores of EP and during the phase transition the leakage of the glycerol and nickelsalt were prevented. The characterization study of chemical structure andsurface microstructure of the composite PCMs were performed by Fouriertransformation infrared spectroscopy (FTIR) and scanning electron microscopy(SEM). Thermal properties were determined by differential scanningcalorimeter (DSC) instrument. The melting temperature and latent heat weredetermined for prepared composite, as -8.3°C and 136 J/g for vacuumimpregnation method. For wet impregnation method the melting point could notbe measured because of the PCM mixture could not deposited into perlite byusing this method. The FTIR analysis presented that no chemical reactions takeplace between the EP and prepared PCM mixture. SEM images showed that theglycerol nickel salt mixture dispersed uniformly into the EP pores. During theheating and cooling processes, leakage and impairment of the composite PCMwere not detect. Consequently, the PCM composite obtained by vacuumimpregnation method, can be used for thermal energy storage applications.