کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9708168 | 1466495 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Heat transfer characteristics of flat plate finned-tube heat exchangers with large fin pitch
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کلمات کلیدی
Experiment - آزمایش یا تجربهExperimentation - آزمایشیHeat transfer coefficient - ضریب انتقال حرارتCoefficient de transfert de chaleur - ضریب انتقال حرارتTube ailété - لوله بزرگسالانFinned tube - لوله فندکEchangeur de chaleur - مبدل حرارتیHeat exchanger - مبدل گرمایی یا مبدل حرارتیGeometry - هندسهGeometrie - هندسه
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The objective of this study is to provide experimental data that can be used in the optimal design of flat plate finned-tube heat exchangers with large fin pitch. In this study, 22 heat exchangers were tested with a variation of fin pitch, number of tube row, and tube alignment. The air-side heat transfer coefficient decreased with a reduction of the fin pitch and an increase of the number of tube row. The reduction in the heat transfer coefficient of the four-row heat exchanger coil was approximately 10% as the fin pitch decreased from 15.0 to 7.5Â mm over the Reynolds number range of 500-900 that was calculated based on the tube diameter. For all fin pitches, the heat transfer coefficient decreased as the number of tube row increased from 1 to 4. The staggered tube alignment improved heat transfer performance more than 10% compared to the inline tube alignment. A heat transfer correlation was developed from the measured data for flat plate finned-tubes with large fin pitch. The correlation yielded good predictions of the measured data with mean deviations of 3.8 and 6.2% for the inline and staggered tube alignment, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refrigeration - Volume 28, Issue 6, September 2005, Pages 851-858
Journal: International Journal of Refrigeration - Volume 28, Issue 6, September 2005, Pages 851-858
نویسندگان
Yonghan Kim, Yongchan Kim,