کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4992873 1457468 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transient thermal energy storage in partitioned enclosures packed with microencapsulated phase change materials
ترجمه فارسی عنوان
ذخیره انرژی حرارتی در محفظه های تقسیم شده با مواد تغلیظ شده با فاز میکرو کیسه ای بسته بندی شده است
کلمات کلیدی
ماده تغییر فاز میکرو کیسه ای، محفظه تقسیم شده، ذخیره انرژی حرارتی گذرا، نسبت ابعاد، مطالعه تجربی و عددی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
In this work, transient characteristics of thermal energy storage in partitioned enclosures filled with microencapsulated phase change material (MEPCM) particles were examined experimentally and numerically. The enclosure is partitioned with aspect ratio λ and packed with different MEPCMs with melting temperatures about TM = 28 °C and 37 °C. The top and bottom surfaces of the partitioned enclosure are, respectively, maintained at hot and cold temperatures, while the other surfaces are kept thermally insulated. The results showed that at the initial transient, the net energy storage in partitioned enclosure, Qnet, increases with the time. Finally, the Qnet approaches quickly the steady state. Additionally, higher dimensionless accumulated energy through the hot wall Qh and cold wall Qc are found for a case with higher hot wall temperature Th. that the faster melting is experienced for the system with higher Stefan number and the subcooling number is the main parameter to dominate the thermal latent heat storage of the MEPCM system. In addition, better net energy storage is noted for a partitioned enclosure with a smaller aspect ratio.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Communications in Heat and Mass Transfer - Volume 86, August 2017, Pages 253-261
نویسندگان
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