Thermophysical Comparison of Five Commercial Paraffin Waxes as Latent Heat Storage Materials

By N. Ukrainczyk, S. Kurajica, J. Šipušić. 2010

216 citations recorded by the source corpus.

Thermophysical properties of phase change materials (PCM) are of utmost importance in latent heat thermal energy storage (LHTES) applications. Therefore, an experimental study is conducted in order to determine thermophysical properties of five technical grade paraffin waxes produced by major Croatian oil company, INA d.d. Rijeka. The temperatures and enthalpies of melting and solidification (latent heat capacity) and specific heat capacities of solid and liquid paraffin waxes were measured by differential scanning calorimetry (DSC). The thermal diffusivity of paraffin waxes was determined utilizing transient method. The importance of eliminating phase transformation interferences to thermophysical properties determination is addressed. The densities and the coefficient of thermal expansion were measured using Archimedes methods. A self-adopted simple and inexpensive laboratory procedure for the determination of liquid density as a temperature function is presented. Finally, the thermal conductivities have been calculated from measured densities, heat capacities and diffusivities. Based on results obtained, the investigated paraffin waxes were evaluated in regard to their applicability as PCM for LHTES.

View Paper: https://www.semanticscholar.org/paper/b4ccb6bde9c09970771814630be7089b02cc0c90

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

Citations in the corpus

Graphene or h-BN paraffin composite structures for the thermal management of Li-ion batteries: A multiscale investigation (2017, unknown): “Therefore the thermal conductivity of multi-layer graphene and the h-BN were chosen to be 2000 W/mK [48] and 390 W/mK [18,49], respectively, the same as those for their high quality bulk films.”
Temperature-dependent thermal properties of solid/liquid phase change even-numbered n-alkanes: n-Hexadecane, n-octadecane and n-eicosane (2015, unknown): “, aT = k/(qcp)) [5,44,45].”
Microencapsulated phase change materials for enhancing the thermal performance of Portland cement concrete and geopolymer concrete for passive building applications (2017, background): “This is because the thermal conductivity of PCM in a solid state is higher than that in a liquid state [16,40].”
An experimental investigation of shell and tube latent heat storage for solar dryer using paraffin wax as heat storage material (2016, background): “Commercial grade paraffin waxes are a combination of different, mainly straight chain hydrocarbons with more than 15 carbon atoms and are obtained from petroleum distillation [46,47].”
Micro-Encapsulated Phase Change Materials: A Review of Encapsulation, Safety and Thermal Characteristics (2016, background): “25 W/m·K) [42] No corrosion [134] No toxicity [3] Low vapor pressure in molten state [3] Medium density up to 930 kg/m3 [135] Cost economic with maximum $4 per kg for technical grade [39] Commercially available at larger scales [136] Higher wetting ability [137] Chemically inert under 500 ◦C; above ”