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Systematic analysis of the stability of Sodium Acetate Trihydrate as Phase Change Material during thermal cycling.

Number: 0574

Author(s) : GUARDA D., RIGHETTI G., MANCIN S., FENK B., O'NEILL P., WORLITSCHEK J., MARTINEZ-GARCIA J., STAMATIOU A., SCHUETZ P.

Summary

Phase Change Materials (PCMs), employed in Latent Thermal Energy Storages (LTES), can represent an important solution to ensure a reliable energy stock. Salt hydrates are inorganic materials, and they present many advantages, e.g., high energy storage density and low cost, as well as a few drawbacks, e.g. supercooling and phase separation, the latter being the main limiting factor. This study is performed on Sodium Acetate Trihydrate (SAT) which melts at around 58 °C, suitable for domestic hot water. The present preliminary work aims at evaluating the thermal behaviour of the material along different melting and solidification cycles. 5 samples were prepared and cycled in two thermostatic baths (40°C and 80°C) for 120 times. 3 of these 5 sample contained SAT and a nucleating agent. The addition of DSP or NaCl resulted in a reduced supercooling and a better stability of the material.

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Details

  • Original title: Systematic analysis of the stability of Sodium Acetate Trihydrate as Phase Change Material during thermal cycling.
  • Record ID : 30031427
  • Languages: English
  • Subject: Technology
  • Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Publication date: 2023/08/21
  • DOI: http://dx.doi.org/10.18462/iir.icr.2023.0574

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