Zhejiang Institute of Technology and Automatic Control, College of Mechanical and Automatic Control, Zhejiang Sci-Tech University, Hangzhou 310018, China; The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China.
The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China.
Carbohydr Polym. 2021 Feb 15;254:117481. doi: 10.1016/j.carbpol.2020.117481. Epub 2020 Dec 3.
The intrinsic intermittence of solar energy raises the necessity for thermal energy storage (TES) systems to balance the contradiction between energy supply and demand energy. This work experimentally provides solid-liquid phase change materials (PCMs) with sufficient storage capacity and discharging rate to offer heating for agriculture products by enhancing heat transfer in phase change fiber composites (PCF). To achieve this, we prepared dipole responsive magnetic/solar-driven PCF composites reinforced with magnetic cellulose nanocrystals hybrids (MCNC). The obtained PCF/MCNC-5% showed excellent magnetic property with a saturation magnetization (MS) value of 1.3 emu/g and effective latent heat phase change enthalpies of 69.2 ± 3.5 J/g - 83.1 ± 4.2 J/g. More importantly, PCF/MCNC-5% showed robust high magnetic to thermal energy storage efficiency of 32.5 % and solar light accelerated energy storage efficiency of 58.5 %. These advantages make the PCF composites promising and more desirable for drying and preservation of the fruits and other agriculture products.
太阳能的固有间歇性要求热能存储（TES）系统来平衡能源供应和需求之间的矛盾。这项工作通过在相变纤维复合材料（PCF）中增强传热，从实验上为具有足够储能容量和放电率的固-液相变材料（PCM）提供了用于为农产品供热的解决方案。为此，我们制备了带有磁响应的太阳能驱动 PCF 复合材料，其中增强了磁性纤维素纳米晶体杂化物（MCNC）。所得到的 PCF/MCNC-5% 表现出优异的磁性能，饱和磁化强度（MS）值为 1.3 emu/g，有效潜热相变焓值为 69.2 ± 3.5 J/g-83.1 ± 4.2 J/g。更重要的是，PCF/MCNC-5% 表现出了 32.5% 的高磁场到热能存储效率和 58.5% 的太阳能加速储能效率。这些优势使得 PCF 复合材料在干燥和保存水果和其他农产品方面具有广阔的应用前景和吸引力。
