کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7053933 | 1458013 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new heat transfer model for flow boiling of refrigerants in micro-fin tubes
ترجمه فارسی عنوان
یک مدل انتقال حرارت جدید برای جریان جوش مبرد در لوله های میکرو فیبر
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کلمات کلیدی
جریان جوش، مدل انتقال حرارت، لوله های میکرو فیبر، مبرد
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Experimental data points of heat transfer coefficient during flow boiling of refrigerants in horizontal micro-fin tubes were collected from literature and our previous experimental work to develop a new general heat transfer model. The database contains 2221 data points covering nine refrigerants, and the involved operation conditions are as follows: mass velocity 47-835â¯kgâ¯mâ2â¯s, vapor quality 0.05-0.98, heat flux 3.9-85.2â¯kWâ¯mâ2, and fin-root diameter 2.64-11.98â¯mm. Six existing general heat transfer correlations for micro-fin tubes were evaluated using the present database. It was found that these correlations were incapable of providing a satisfactory prediction. Among them, the correlation proposed by Mehendale shows the best predictive ability, predicting 70.3% and 91.3% of the database within ±30% and ±50% error bands, respectively. Then a new model based on the present database was generalized by modifying Cavallini et al. correlation, and a good agreement between the new model and the database was obtained. The new model can predict 82.1% of data points within ±30% error bands with a mean absolute deviation of 18.6%, and its parametric-trend predictive ability under varied operating conditions was also verified using several datasets.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 126, Part B, November 2018, Pages 1067-1078
Journal: International Journal of Heat and Mass Transfer - Volume 126, Part B, November 2018, Pages 1067-1078
نویسندگان
Weiyu Tang, Wei Li,