期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 124, 期 2, 页码 881-888出版社
SPRINGER
DOI: 10.1007/s10973-015-5173-0
关键词
Phase change material; Fatty acid; Ternary eutectic mixture; Thermal properties
资金
- Natural Science Foundation of China [11472295, 51378426]
- Cultivation program for the Excellent Doctoral Dissertation of Southwest Jiaotong University
- Youth Science and Technology Innovation Team of Sichuan Province of Building Environment and Energy Efficiency [2015TD0015]
- Open Research Fund of Key Laboratory of Green Building and Energy Conservation, Xihua University [SZJJ2012-045]
Based on the theory calculation, the capric-palmitic-stearic (CA-PA-SA) ternary eutectic mixture was prepared with melting and freezing temperature of 19.93 and 16.84 A degrees C, respectively. Regarding CA-PA-SA as phase change materials (PCMs), and activated carbon (AC) as the additive, the CA-PA-SA/AC composites can be prepared by physical blend method which can be applied to high-temperature cooling application in solar cooling systems, radiant cooling systems, etc. A comprehensive study of the structure, thermal properties, thermal stability, thermal durability and thermal storage-release characteristic of CA-PA-SA/AC composites was conducted through the FT-IR, DSC, TG, accelerated thermal cycling test and melting-freezing experiments. The results show that, with the increase in AC content, the melting temperature of CA-PA-SA/AC composites decreases gradually, whereas the freezing temperature increases. And the addition of AC can enhance the thermal stability, the thermal durability and the thermal storage-release rate of PCM: the thermal stability of PCM1-PCM4 is much greater than that of pure mixture, and its storage time was reduced by 37, 31, 23 and 9 %, respectively, while its release time was reduced by 67, 58, 48 and 43 % respectively.
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