کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7159851 | 1462836 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical and experimental investigation on latent thermal energy storage system with spiral coil tube and paraffin/expanded graphite composite PCM
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
For latent thermal energy storage (LTES) systems, performance is limited by the suboptimum structures of heat exchangers and the low thermal conductivities of phase change materials (PCMs). In this work, a rapid charging tube-in-tank LTES system is developed by applying a compact spiral coil tube and paraffin/expanded graphite composite PCM with a high thermal conductivity simultaneously. Numerical simulation coupling heat transfer at the solid-liquid interface is used to investigate the thermal energy storage performance of the LTES system and the results show a good agreement with the experimental data. It is found that heat transfer temperature difference has a great influence on performance of the LTES system, while Reynolds number has a relatively little effect especially when Reynolds number is higher than 8700. Besides, the optimal ratio of the helix radius of the spiral coil tube to the radius of the PCM tank is confirmed to be between 0.53 and 0.64. Moreover, increasing bulk density of the composite PCM can bring about a shorter thermal energy storage time. In summary, the results are valuable for the design of a similar LTES system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 126, 15 October 2016, Pages 889-897
Journal: Energy Conversion and Management - Volume 126, 15 October 2016, Pages 889-897
نویسندگان
Caixing Chen, Hua Zhang, Xuenong Gao, Tao Xu, Yutang Fang, Zhengguo Zhang,