Development of Corn-Oil Ester and Water Mixture Phase Change Materials for Low Temperature Refrigeration Applications

Rasta, I Made and Suamir, I Nyoman (2018) Development of Corn-Oil Ester and Water Mixture Phase Change Materials for Low Temperature Refrigeration Applications. In: International Conference on Science and Technology (ICST 2018), 18-19 Oktober 2018, Nusa Dua, Bali.

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Abstract

This study focuses on development of corn-oil ester and tap water mixtures as novel solid-liquid phase change material (PCM) candidates for low temperature refrigeration applications with product temperature between -20 °C and -10 °C. Thermal properties of both tap water and its mixture with corn-oil ester were tested by DSC and T-history methods. The test results showed that freezing and melting temperatures of tap water were 0 °C and phase transition temperatures of the mixtures were lower than those of individual tap water. The results indicated that corn-oil ester in the mixtures as a nucleate agent was able to lower the freezing point and to trigger ice nucleation in tap water which could diminish its super-cooling. The PCM candidates were found to have excellent thermal properties that could fulfil requirements of latent heat thermal energy storage systems used for low temperature refrigeration applications.

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