Thermal Stability and Reliability Test of Some Saturated Fatty Acids for Low and Medium Temperature Thermal Energy Storage

Abhishek Anand, Karunesh Kant, Amritanshu Shukla, Chang-Ren Chen and Atul Sharma
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Abhishek Anand: Non-Conventional Energy Laboratory, Rajiv Gandhi Institute of Petroleum Technology, Jais 229304, India
Karunesh Kant: Institut Pascal, Université Clermont Auvergne, CNRS, Clermont Auvergne INP, 63000 Clermont-Ferrand, France
Amritanshu Shukla: Non-Conventional Energy Laboratory, Rajiv Gandhi Institute of Petroleum Technology, Jais 229304, India
Chang-Ren Chen: Department of Mechanical Engineering, Kun Shan University, 949 Da-Wan Road, Tainan 710, Taiwan
Atul Sharma: Non-Conventional Energy Laboratory, Rajiv Gandhi Institute of Petroleum Technology, Jais 229304, India

Energies, 2021, vol. 14, issue 15, 1-22

Abstract: Phase change materials have been overwhelmingly used for thermal energy storage applications. Among organics, fatty acids are an important constituent of latent heat storage. Most of the saturated fatty acid PCMs so far studied are either unary or binary constituents of pure fatty acids. In the present study, ternary blends of saturated fatty acids i.e., capric, lauric, myristic, stearic, and palmitic acids have been developed with different weight proportions. A series of 28 ternary blends viz. CA-LA-MA, CA-LA-PA, CA-LA-SA, CA-MA-PA, CA-MA-SA, and CA-PA-SA were prepared and analyzed with differential scanning calorimetry, thermal gravimetric analysis, and Fourier transform infrared spectroscopy. DSC analysis revealed that the prepared materials lie in the 15–30 °C temperature range. Also, 300 thermal melt/freeze cycles were conducted which showed ±10% variation in terms of the melting peak for most of the PCMs, with the average latent heat of fusion between 130 and 170 kJ/kg. The TGA analysis showed that most of the PCMs are thermally stable up to 100 °C and useful for medium-low storage applications, and FTIR analysis showed that the materials are chemically stable after repeated thermal cycles. Based on cycle test performances, the developed materials were found to be reliable for long-term use in building and photovoltaic applications.

Keywords: phase change materials; thermal cycle testing; latent heat storage; buildings; photovoltaic; fatty acids (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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