کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6688905 | 501887 | 2015 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Design of packed bed thermal energy storage systems for high-temperature industrial process heat
ترجمه فارسی عنوان
طراحی سیستم های ذخیره انرژی حرارتی بسته بندی شده برای حرارت بالا در فرآیند صنعتی درجه حرارت
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
A previously validated quasi-one-dimensional transient two-phase heat transfer model is used to assess the effect of operational and design parameters on the performance of thermocline thermal energy storage (TES) based on a packed bed of rocks and high-temperature air from process heat as heat transfer fluid. The performance indicators are thermal losses, pumping work, discharge outflow temperature, and overall storage efficiency. A 7.2Â GWhth TES unit is used as a baseline design. It is found that initial charging of the TES prior to cyclic operation significantly improves its performance at the expense of additional storage material. The temperature drop during the discharge phase is reduced and the efficiency is increased by decreasing the tank diameter-to-height ratio and the rock diameter at the expense of increased pressure drop and pumping work. Increasing the cone angle results in reduced storage size, but increases the temperature drop during discharging. It is shown that thin insulation layers are sufficient to ensure low thermal losses. For all investigated cases, the overall efficiency of the storage stays above 95%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 137, 1 January 2015, Pages 812-822
Journal: Applied Energy - Volume 137, 1 January 2015, Pages 812-822
نویسندگان
G. Zanganeh, A. Pedretti, A. Haselbacher, A. Steinfeld,