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Preliminary assessment of a mixture of capric and lauric acids for low-temperature thermal energy storage

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  • Dimaano, Maria Natalia R
  • D. Escoto, Angela

Abstract

A mixture of capric and lauric acids was evaluated as a possible phase- change media suitable for Philippine low-temperature thermal-energy storage systems. The properties of different combinations of acids were verified against existing literature data with the use of a differential scanning calorimeter. Classical evaluation techniques were employed to determine the required thermodynamic, kinetic, and other physical properties. The accuracy of the set-up was determined and phase transitions were observed by performing a series of thermal cycles. To authenticate the long-term stability and reproducibility of the combination, 120 thermal cycles were carried out using a fabricated equilibrium cell. The observed lowest temperatures averaged 11.63°C. The material remained physically stable. However, the energy density requires further design improvement. No usable storage medium has as yet been found because the cooling effect occurred in a time that is too short for practical use.

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  • Dimaano, Maria Natalia R & D. Escoto, Angela, 1998. "Preliminary assessment of a mixture of capric and lauric acids for low-temperature thermal energy storage," Energy, Elsevier, vol. 23(5), pages 421-427.
    • Handle: RePEc:eee:energy:v:23:y:1998:i:5:p:421-427
    DOI: 10.1016/S0360-5442(97)00108-4
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    Cited by:

    1. Wang, Zhangyuan & Qiu, Feng & Yang, Wansheng & Zhao, Xudong, 2015. "Applications of solar water heating system with phase change material," Renewable and Sustainable Energy Reviews, Elsevier, vol. 52(C), pages 645-652.
    2. Qiu, Xiaolin & Li, Wei & Song, Guolin & Chu, Xiaodong & Tang, Guoyi, 2012. "Microencapsulated n-octadecane with different methylmethacrylate-based copolymer shells as phase change materials for thermal energy storage," Energy, Elsevier, vol. 46(1), pages 188-199.
    3. Li, Min & Wu, Zhishen, 2012. "A review of intercalation composite phase change material: Preparation, structure and properties," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(4), pages 2094-2101.
    4. Roxas-Dimaano, M.N & Watanabe, T, 2002. "The capric and lauric acid mixture with chemical additives as latent heat storage materials for cooling application," Energy, Elsevier, vol. 27(9), pages 869-888.
    5. Ferrer, Gerard & Solé, Aran & Barreneche, Camila & Martorell, Ingrid & Cabeza, Luisa F., 2015. "Review on the methodology used in thermal stability characterization of phase change materials," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 665-685.
    6. Ewa Zender–Świercz, 2021. "A Review of Heat Recovery in Ventilation," Energies, MDPI, vol. 14(6), pages 1-23, March.
    7. Rathod, Manish K. & Banerjee, Jyotirmay, 2013. "Thermal stability of phase change materials used in latent heat energy storage systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 18(C), pages 246-258.

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