کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6481164 1368130 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical analysis and comparison of the thermal performance enhancement methods for metal foam/phase change material composite
ترجمه فارسی عنوان
تجزیه و تحلیل عددی و مقایسه روش های افزایش عملکرد حرارتی برای کامپوزیت مواد فوم / فاز فلزی
کلمات کلیدی
مواد تغییر فاز روش افزایش، فوم آلومینیوم، عملکرد حرارتی، زمان ذوب،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی


- Three methods to improve the melting rate of phase change material embedded in metal foam are investigated and compared.
- The metal foam with small pore size could enhance the heat transfer of the composite.
- The modified shape of the container is beneficial to the natural convection during the phase transition process.
- An optimized method is proposed by combining the advantages of two methods.

Three methods to further enhance thermal performance of the metal foam/phase change material (PCM) composite are investigated and compared. These three methods include changing the pores per inch (PPI) of metal foam, modifying the shape of the cold wall and using the discrete heat sources. In this study, the composite consists of two materials: aluminum foam with 90% porosity as metal foam and paraffin wax as PCM. The numerical model based on finite volume method is developed, and the non-equilibrium equation is applied to study the melting process of the paraffin embedded in aluminum foam. The heat loss, the liquid average velocity and the efficiency of latent heat storage are analyzed and discussed. The results show that adopting the aluminum foam with high PPI value or modifying the shape of the cold wall could improve the thermal response of composite. Besides, the discrete heat sources could lead to a large average velocity in the liquid region. Combining the advantages of these methods, an optimization method is also proposed, which could improve the efficiency to 83.32% comparing with the pure paraffin.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 109, Part A, 25 October 2016, Pages 373-383
نویسندگان
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