کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9690302 | 1457224 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental study of the effect of winglet location on heat transfer enhancement and pressure drop in fin-tube heat exchangers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Experimental study of the effect of winglet location on heat transfer enhancement and pressure drop in fin-tube heat exchangers Experimental study of the effect of winglet location on heat transfer enhancement and pressure drop in fin-tube heat exchangers](/preview/png/9690302.png)
چکیده انگلیسی
Local heat transfer coefficients were measured on fin-tube heat exchanger with winglets using a single heater of 2 inch diameter and five different positions of winglet type vortex generators. The measurements were made at Reynolds number about 2250. Flow losses were determined by measuring the static pressure drop in the system. Results showed a substantial increase in the heat transfer with winglet type vortex generators. It has been observed that average Nusselt number increases by about 46% while the local heat transfer coefficient improves by several times as compared to plain fin-tube heat exchanger. The maximum improvement is observed in the re-circulation zone. The best location of the winglets was with ÎXÂ =Â 0.5D and ÎYÂ =Â 0.5D. The increase in pressure drop for the existing situation was of the order of 18%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 25, Issues 11â12, August 2005, Pages 1684-1696
Journal: Applied Thermal Engineering - Volume 25, Issues 11â12, August 2005, Pages 1684-1696
نویسندگان
S.M. Pesteei, P.M.V. Subbarao, R.S. Agarwal,