کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1551443 998133 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental investigations of porous materials in high temperature thermal energy storage systems
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Experimental investigations of porous materials in high temperature thermal energy storage systems
چکیده انگلیسی

In this paper, the feasibility of using porous materials such as metal foams and expanded graphite to enhance the heat transfer capability of PCMs in high temperature thermal energy storage system is experimentally investigated. Experimental results showed that the heat transfer rate can be enhanced through addition of the porous materials by 2.5 times compared to that of pure NaNO3 in the heating process from 250–300 °C. However the heat transfer rate could be reduced by half in the liquid region since the natural convection can be severely suppressed by the porous structures. In an attempt to further reveal the natural convection effect in PCMs embedded in porous materials, two heating methods (boundary conditions) are examined. Finally the issue of corrosion process is briefly discussed.


► The heat transfer rate can be enhanced by porous materials by 2.5 times in the solid region.
► The natural convection is weakened by the porous structures.
► Two heating methods are investigated to examine the natural convection effect.
► The issue of corrosion process is briefly discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 85, Issue 7, July 2011, Pages 1371–1380
نویسندگان
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