کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7048350 | 1457130 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analytical analysis and experimental verification of trapezoidal fin for assessment of heat sink performance and material saving
ترجمه فارسی عنوان
تجزیه و تحلیل تحلیلی و تجربی آزمایشی ضایعات تراپزی برای ارزیابی عملکرد نزول گرما و صرفه جویی در مواد
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کلمات کلیدی
انتقال حرارت، گرمادهی راه حل تحلیلی، باله های مستطیلی، باله های تراس،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
A quick assessment of the performance loss in association with material saving amid rectangular and trapezoidal fin is analytically investigated and experimentally verified. A novel dimensionless parameter - rt representing the ratio of the fin tip to base thickness - is used to simplify the fin equation. A dimensionless differential equation is derived based on the formulation and the corresponding closed form solution of the dimensionless temperature and fin efficiency is presented. It is found that the performance drop depends on various rt ratios, and the most pronounced performance difference occurs in the region between Mâ=â1.7 and 2.5. Yet the performance difference between the rectangular and trapezoidal fin are quite insignificant at low velocity region; with the increasing of velocity, the performance loss ratio is gradually discriminated to reach the maximum performance loss between region of Mâ=â1 and 2, then it begins to converge again toward Mâ=â4. The recovering of the ratio is actually associated with the diverging and converging trend of the fin efficiency. The analytical results are in line with the experimental results. At a frontal velocity of 4âm/s, the predicted difference of heat transfer rate between trapezoidal and rectangular fin profile in terms of total heat transfer ratio is only 0.88%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 98, 5 April 2016, Pages 203-212
Journal: Applied Thermal Engineering - Volume 98, 5 April 2016, Pages 203-212
نویسندگان
Hong-Long Chen, Chi-Chuan Wang,