The Improvement of Melting Characteristics of Capric-Lauric Acid Mixture Employing Prospective Additives for the Cooling Application of Thermal Energy Storage

A melting point of I8.O °C for a 65 mol % capric acid - 35 mol % lauric acid (C-L) mixture is considered high for low-temperature thermal energy storage. Chemical additives with low melting points are considered to improve the melting characteristic o f the C-L acid. By differential scanning calorimetry (DSC). In this study the effects of chemical additives on the C-L acid in different concentrations have been analyzed. A cryoscopic constant of 10.7 K-kg c.L mol -1 for the C-L acid is obtained. The desired melting depression values of B to 11 °C are not met with 0.61 mol each of methyl salicylate, cineole, and eugenol per kg of C-L acid. However, the melting characteristics obtained for the same concentrations of the above-mentioned additives in the C-L acid are applicable for industrial process cooling