کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7055092 | 1458038 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pressure oscillation and a new method to calculate the heat transfer coefficient for steam jet condensation
ترجمه فارسی عنوان
نوسان فشار و یک روش جدید برای محاسبه ضریب انتقال حرارت برای تراکم جت بخار
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کلمات کلیدی
نوسان فشار، جت بخار، تراکم تماس مستقیم ضریب انتقال حرارت،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The pressure oscillation and heat transfer are two important aspects for direct contact condensation. Both of them have been investigated within the steam mass flux 441-865Â kg/(m2Â s) and water temperature 293-343Â K in this paper. The frequency of pressure oscillation decreases with the increasing steam mass flux and water temperature. While, the frequency first increases then subsequently decreases with the decreasing pressure ratio of the nozzle. The heat transfer coefficient has the same variation regularities with the frequency of pressure oscillation. Two dimensionless quantity of frequency of pressure oscillation and heat transfer coefficient have been obtained, the dimensionless heat transfer coefficient is proportional to the dimensionless frequency of pressure oscillation. A new simpler method to calculate the heat transfer coefficient for steam jet condensation has been given. The errors between the predicted values and experimental data are within â30% to 25%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 104, January 2017, Pages 1152-1159
Journal: International Journal of Heat and Mass Transfer - Volume 104, January 2017, Pages 1152-1159
نویسندگان
Binbin Qiu, Junjie Yan, Shripad T. Revankar, Xinzhuang Wu,