Investigation of the stability of paraffin–exfoliated graphite nanoplatelet composites for latent heat thermal storage systems

A review of exfoliated graphite

“…The addition of GNP to paraffin (a phase change material, or PCM) increases the thermal conductivity, which is important for the heat transfer rate [109][110][111][112][113]. Thermal property enhancement is similarly obtained for various phase change materials, including paraffin, hexadecane, octadecane [114], and bio-based materials [115, 163 0 ].…”

Enhanced thermal conductivity of PEG/diatomite shape-stabilized phase change materials with Ag nanoparticles for thermal energy storage

“…In recent years, shape-stabilized PCMs (ss-PCMs) have become the main focus of scientic studies because ss-PCMs afford good thermally-conductive supporting materials which can maintain a solid shape even when the temperature is higher than the melting point of the PCM itself. [16][17][18] It has been proven that this method is the most effective approach to resolve the leakage and low thermal conductivity problems of organic PCMs.…”

Surface-Modified Compressed Expanded Graphite for Increased Salt Hydrate Phase Change Material Thermal Conductivity and Stability

“…The addition of a material with high thermal conductivity, such as graphite, graphene, carbon nanotubes, metal oxide nanoparticles, metal foams, expanded graphite (EG), and clay minerals, has been studied for thermal conductivity enhancement of PCMs, , although most of these studies were conducted on organic PCMs. Shape-stabilized composites, characterized by a PCM incorporated into a highly porous matrix such as EG or nanoscale networks such as carbon nanotubes, show reliable, improved performance due to reduced leakage and the potential for thermal conductivity enhancement. , EG in particular also features a high specific surface area, a characteristic that can help reduce supercooling and phase separation as well as PCM leakage when modified with TX-100 surfactant. − EG , matrixes are well-known for enhancing the thermal conductivity of organic paraffin PCMs − and organic eutectic PCMs . However, there are few efforts that utilize EG in inorganic salt hydrate PCM composites, largely because of challenges in impregnating nonpolar, hydrophobic EG with polar, hydrophilic salt hydrates.…”