Property development in n-alkane and n-alkane eutectic phase change materials for thermal energy storage applications
In this study, some n-alkanes (n-heptadecane: C17, n-octadecane: C18, n-nonadecane: C19, n-eicosane: C20, and n-tetracosane: C24) were used to determine their physicochemical properties to reveal the relationships between the molecular structure and properties. The materials studied were having work...
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Elsevier
2025-01-01
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| Series: | Solar Energy Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667113125000026 |
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| author | Cemil Alkan Erdinç Halis Alakara |
| author_facet | Cemil Alkan Erdinç Halis Alakara |
| author_sort | Cemil Alkan |
| collection | DOAJ |
| description | In this study, some n-alkanes (n-heptadecane: C17, n-octadecane: C18, n-nonadecane: C19, n-eicosane: C20, and n-tetracosane: C24) were used to determine their physicochemical properties to reveal the relationships between the molecular structure and properties. The materials studied were having working temperatures from 21.4 to 46.5 °C and enthalpy storage capacity from 216.2 to 268.9 J/g. Other thermophysical properties relevant to thermal energy storage, like specific heat capacity, thermal conductivity, density, and refractive index, are also investigated and formulated as properties changing with respect to molar mass and carbon number. In addition, some eutectic mixtures of the n-alkane compounds used were prepared, and the thermal energy storage properties, especially phase change temperature and enthalpy, were examined. Binary eutectic mixtures of C17-C18, C20-C17, C20-C19, and C20-C24were having phase change temperatures from 20.6 to 35.8 °C and enthalpy storage capacity from 215.1 to 265.6 °C. While preparing eutectic mixtures, the Schrader equation was used to estimate the eutectic composition points, and then the accuracy of the equation was examined. The studies were conducted based on Differential Scanning Calorimetry (DSC), which has extremely high accuracy. The ranges and dynamics of the analysis methods were chosen according to the needs of potential applications. Besides, varios compositions were investigated to determine the eutectic point experimentally. Mixing was found having a negative effect on the phase change enthalpy. This study, therefore, revealed whether eutectic mixtures have suitable enthalpy as well as phase transition temperature for the desired application area. |
| format | Article |
| id | doaj-art-a234f2be92fb4de8b0d5f142860d84cf |
| institution | Kabale University |
| issn | 2667-1131 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
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| series | Solar Energy Advances |
| spelling | doaj-art-a234f2be92fb4de8b0d5f142860d84cf2025-01-16T04:29:23ZengElsevierSolar Energy Advances2667-11312025-01-015100089Property development in n-alkane and n-alkane eutectic phase change materials for thermal energy storage applicationsCemil Alkan0Erdinç Halis Alakara1Tokat Gaziosmanpaşa University, Faculty of Arts and Sciences, Department of Chemistry, Tokat, Türkiye; Corresponding author.Tokat Gaziosmanpaşa University, Faculty of Engineering and Architecture, Department of Civil Engineering, Tokat, TürkiyeIn this study, some n-alkanes (n-heptadecane: C17, n-octadecane: C18, n-nonadecane: C19, n-eicosane: C20, and n-tetracosane: C24) were used to determine their physicochemical properties to reveal the relationships between the molecular structure and properties. The materials studied were having working temperatures from 21.4 to 46.5 °C and enthalpy storage capacity from 216.2 to 268.9 J/g. Other thermophysical properties relevant to thermal energy storage, like specific heat capacity, thermal conductivity, density, and refractive index, are also investigated and formulated as properties changing with respect to molar mass and carbon number. In addition, some eutectic mixtures of the n-alkane compounds used were prepared, and the thermal energy storage properties, especially phase change temperature and enthalpy, were examined. Binary eutectic mixtures of C17-C18, C20-C17, C20-C19, and C20-C24were having phase change temperatures from 20.6 to 35.8 °C and enthalpy storage capacity from 215.1 to 265.6 °C. While preparing eutectic mixtures, the Schrader equation was used to estimate the eutectic composition points, and then the accuracy of the equation was examined. The studies were conducted based on Differential Scanning Calorimetry (DSC), which has extremely high accuracy. The ranges and dynamics of the analysis methods were chosen according to the needs of potential applications. Besides, varios compositions were investigated to determine the eutectic point experimentally. Mixing was found having a negative effect on the phase change enthalpy. This study, therefore, revealed whether eutectic mixtures have suitable enthalpy as well as phase transition temperature for the desired application area.http://www.sciencedirect.com/science/article/pii/S2667113125000026N-alkanesEutectic mixturesSchrader equationDifferential scanning calorimetryThermal energy storage |
| spellingShingle | Cemil Alkan Erdinç Halis Alakara Property development in n-alkane and n-alkane eutectic phase change materials for thermal energy storage applications Solar Energy Advances N-alkanes Eutectic mixtures Schrader equation Differential scanning calorimetry Thermal energy storage |
| title | Property development in n-alkane and n-alkane eutectic phase change materials for thermal energy storage applications |
| title_full | Property development in n-alkane and n-alkane eutectic phase change materials for thermal energy storage applications |
| title_fullStr | Property development in n-alkane and n-alkane eutectic phase change materials for thermal energy storage applications |
| title_full_unstemmed | Property development in n-alkane and n-alkane eutectic phase change materials for thermal energy storage applications |
| title_short | Property development in n-alkane and n-alkane eutectic phase change materials for thermal energy storage applications |
| title_sort | property development in n alkane and n alkane eutectic phase change materials for thermal energy storage applications |
| topic | N-alkanes Eutectic mixtures Schrader equation Differential scanning calorimetry Thermal energy storage |
| url | http://www.sciencedirect.com/science/article/pii/S2667113125000026 |
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