Prevention of supercooling and stabilization of inorganic salt hydrates as latent heat storage materials

Solidification behavior and thermal conductivity of bulk sodium acetate trihydrate composites with thickening agents and graphite

“…Hu et al investigated the reduction of supercooling by the use of Aluminium Nitride nanoparticles in the SAT composite with 4% CMC and found the thickening agent suitable to avoid phase separation and suspend the nucleation agent in the mixture [19]. Ryu et al investigated several salt hydrates and found that for some salt hydrates a super absorbent polymer (SAP) was an effective thickening agent however CMC was more effective for SAT [20]. Shin et al investigated the combination of CMC and expanded graphite as additives for SAT and found that composites with 2.5 wt% EG and 5 wt% CMC had a thermal conductivity of 1.85 W/m K [21].…”

Overview of Basic Solid–Liquid PCMs Used in Building Envelopes—Packaging Methods, Encapsulation, and Thermal Enhancement

“…Thickening of the material to gel form was suggested by Telkes (1952). Different thickening materials have been tried to minimize the phase separation in solid and liquid phases and also to prevent nucleating agents from settling down due to the gravity (Lane 1983;Ryu et al 1992;Cabeza et al 2003;Gok et al 2009). In early PCM research with Glauber salt, a bentonite clay has been used as a thickening agent .…”

PCMs for Residential Building Applications: A Short Review Focused on Disadvantages and Proposals for Future Development

“…Ryu et al [61] conducted research into the potential of thickening agents as a technique to reduce/eliminate phase segregation from inorganic hydrated salt PCMs. For high hydrated salt compounds, such as sodium sulfate decahydrate (Na 2 SO 4 ·10H 2 O), a super-absorbent polymer was found to be an effective thickener to prevent phase segregation.…”