کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7055559 1458045 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The heat transfer mechanism study of three-tank latent heat storage system based on entransy theory
ترجمه فارسی عنوان
مطالعه مکانیزم انتقال حرارت گرمای ذخیره سازی پنهان سه مخزن براساس نظریه ماتریس
کلمات کلیدی
ذخیره سازی حرارت نهایی سه مخزن، انتقال گرما، تعداد تلفات ورودی، راندمان اگزرژی، انرژی خورشیدی، مبدل حرارتی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
A three-tank latent heat storage system in which liquid lead-bismuth eutectic alloy (LBE) is used as sensible heat storage medium, and sodium nitrate is selected as the phase change material (PCM), is proposed in the present work. The performance of thermal storage system depends chiefly upon the heat transfer performance at superheated steam stage, and the mass flow rate of LBE can be adjustable to accommodate the specific heat change of water/steam. There exists an optimal mass flow rate ratio to maximize the performance of storage system. Generally, the more uniform the temperature difference distribution is, the higher the thermal performance of the storage system. The optimal mass flow rate of liquid LBE appears under constant mass flow rate ratio condition, in which the entransy and exergy rises of steam reach the maximum. The increasing number of transfer units at superheated steam stage improves the thermal storage performance monotonously. The exergy efficiency of this storage system runs at more than 80% through proper parameters setting.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 97, June 2016, Pages 191-200
نویسندگان
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