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<p>This comparative study investigates the thermophysical characteristics of Lauric acid (LA), LA-Paraffin wax (PW) eutectic phase change materials, and Al₂O₃-based eutectic PCMs. The results show that the latent heat of fusion of the eutectic PCM containing 85 wt% LA and 15 wt% PW is 21.83% lower than that of pure LA. Furthermore, the incorporation of 0.1 wt% Al₂O₃ into the 85:15 (LA) eutectic PCM leads to an additional 5.9% reduction in latent heat. Despite this decrease, the Al₂O₃-based eutectic PCM exhibits enhanced thermophysical properties, including higher specific heat capacity and thermal conductivity, compared with pure organic PCMs. Consequently, the charging and discharging durations of the thermal energy storage (TES) system are reduced. Moreover, the liquid fraction of the 85:15:0.1 wt% (LA: PW: Al₂O₃)-based TES system reaches completion 185&#xa0;s earlier than that of the pure LA-based system. In addition, the heat transfer rate of the Al₂O₃-based eutectic PCM-based TES system is 105.69% higher than that of pure LA. Therefore, the 85:15:0.1 wt% (LA: PW: Al₂O₃) nano-enhanced eutectic PCM demonstrates superior thermal energy storage performance and is a promising candidate for low-temperature thermal energy storage applications.</p>

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A comparative study of organic-organic eutectic and nano-enhanced eutectic PCMs with organic PCMs based thermal energy storage systems

  • 期刊论文

  • 发表日期：

    2026年7月7日

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  • Chandrmani Yadav,
  • Rashmi Rekha Sahoo,
  • Brihaspati Singh,
  • Rachit Manchanda,
  • Ankush Mehta,
  • Rupesh Gupta,
  • Ankur Saxena

摘要

This comparative study investigates the thermophysical characteristics of Lauric acid (LA), LA-Paraffin wax (PW) eutectic phase change materials, and Al₂O₃-based eutectic PCMs. The results show that the latent heat of fusion of the eutectic PCM containing 85 wt% LA and 15 wt% PW is 21.83% lower than that of pure LA. Furthermore, the incorporation of 0.1 wt% Al₂O₃ into the 85:15 (LA) eutectic PCM leads to an additional 5.9% reduction in latent heat. Despite this decrease, the Al₂O₃-based eutectic PCM exhibits enhanced thermophysical properties, including higher specific heat capacity and thermal conductivity, compared with pure organic PCMs. Consequently, the charging and discharging durations of the thermal energy storage (TES) system are reduced. Moreover, the liquid fraction of the 85:15:0.1 wt% (LA: PW: Al₂O₃)-based TES system reaches completion 185 s earlier than that of the pure LA-based system. In addition, the heat transfer rate of the Al₂O₃-based eutectic PCM-based TES system is 105.69% higher than that of pure LA. Therefore, the 85:15:0.1 wt% (LA: PW: Al₂O₃) nano-enhanced eutectic PCM demonstrates superior thermal energy storage performance and is a promising candidate for low-temperature thermal energy storage applications.