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Reviewing the solid-liquid phase transition enthalpies of popular salt hydrate PCM.
Number: 1934
Author(s) : SCHMIT H., RATHGEBER C., HOOCK P., HIEBLER S.
Summary
Salt hydrates are attractive as phase change materials (PCM) due to generally higher volumetric melting enthalpies and lower costs than comparable organic materials. Besides the melting temperature, the enthalpy associated with the phase change of PCM is the crucial value with regard to applications. A plethora of reviews offers values amongst others for the phase transition enthalpies of a multitude of PCM. However, upon closer examination, two issues become apparent: For numerous salt hydrates, differing values are listed for the same salt hydrate. Additionally, the values rarely stem from original experimental data sources but rather from earlier reviews or other data collections. In order to counteract this trend, values from original experimental data sources for four popular salt hydrate PCM are offered in this work: CaCl2·6H2O, MgCl2·6H2O, NaOAc·3H2O, and Na2SO4·10H2O. Furthermore, factors influencing the measured phase transition enthalpy of the four salt hydrates are identified and discussed.
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Details
- Original title: Reviewing the solid-liquid phase transition enthalpies of popular salt hydrate PCM.
- Record ID : 30028842
- Languages: English
- Subject: Technology
- Source: 13rd IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: (online) Vicenza, Italy, September 1-3, 2021.
- Publication date: 2021/09/01
- DOI: http://dx.doi.org/10.18462/iir.PCM.2021.1934
- Document available for consultation in the library of the IIR headquarters only.
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