کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4991461 | 1457113 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of winglet location on heat transfer of a fin-and-tube heat exchanger
ترجمه فارسی عنوان
تأثیر محل برش روی انتقال حرارت یک مبدل حرارتی برشی و لوله
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Heat transfer enhancement and pressure loss of a fin-and-tube heat exchanger with rectangular winglet pairs has been numerically investigated by solving the conservation equations of mass, momentum and energy. The flow is assumed to be laminar at different Reynolds numbers. The winglets are placed in common flow up configuration which increases the heat transfer in the wake region of the tube. It was found from the numerical investigation the rate of heat transfer is increasing with number of winglets. It was also found that the placement of winglets near the central tube is more effective in transferring heat compared to entrance and exit of the heat exchanger. Keeping other parameters fixed it was found from the numerical experiment that the heat transfer performance was increasing significantly with the attack angle (β) of winglets. There also exists an optimum stream wise distance (ÎX) for placement of winglets for which the heat transfer is found to be highest. An optimum value of span wise distance (ÎY) could be decided where the heat transfer to the fluid was found to be maximum.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 116, April 2017, Pages 528-540
Journal: Applied Thermal Engineering - Volume 116, April 2017, Pages 528-540
نویسندگان
Shailesh Kumar Sarangi, Dipti Prasad Mishra,