کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
660870 1458119 2010 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermo-hydraulic study of a single row heat exchanger consisting of metal foam covered round tubes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Thermo-hydraulic study of a single row heat exchanger consisting of metal foam covered round tubes
چکیده انگلیسی
Open cell metal foam is a novel engineering material that offers an interesting combination of material properties from a heat exchanger point of view such as a high specific surface area, tortuous flow paths for flow mixing and low weight. A new heat exchanger design with metal foams is studied in this work, aimed at low airside pressure drop. It consists of a single row of aluminum tubes covered with thin layers (4-8 mm) of metal foam. Through wind tunnel testing the impact of various parameters on the thermo-hydraulic performance was considered, including the Reynolds number, the tube spacing, the foam height and the type of foam. The results indicated that providing a good metallic bonding between the foam and the tubes can be achieved, metal foam covered tubes with a small tube spacing, small foam heights and made of foam with a high specific surface area potentially offer strong benefits at higher air velocities (>4 m/s) compared to helically finned tubes. The bonding was done by conductive epoxy glue and was found to have a strong impact on the final results, showing a strong need for a cost-effective and efficient brazing process to connect metal foams to the tube surfaces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 53, Issues 15–16, July 2010, Pages 3262-3274
نویسندگان
, , , , , ,