کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4990882 1368115 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research PaperOperation of air cooled condensers for optimised back pressure at ambient wind
ترجمه فارسی عنوان
مقاله پژوهشی عملیات خنک کننده های هوا خنک کننده برای فشار بهینه شده در فشار باد در محیط
کلمات کلیدی
خنک کننده هوا خنک کننده، فشار پشت، تجزیه و تحلیل رابطه ای خاکستری طرفدار جریان محوری شبیه سازی عددی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی

The traditional back pressure regulation of turbine is influenced more seriously by ambient wind and temperature, especially the hot air reflow and high temperature effect on the axial fans of the air-cooled condensers. This variation would result in the cooling capacity of the fans decreasing and the power consumption increasing. The grey difference incremental correlation method is proposed for considering the back pressure regulation problem from a single condenser cell perspective, and analyze the influence on the heat rejection when processing the speed regulation of the axial fans, then the relationship between the heat rejection increment and the influence of the back pressure will be obtained. The flow and temperature fields of the air-cooled condensers can be obtained by applying the CFD method, and the different back pressure in the different fan speed will be calculated. The results show that, larger the fans ventilation rates will not necessarily cause higher the heat rejection of the finned tube bundle. Reasonably improve the speed of the higher relational degree fans can effectively reduce the turbine back pressure and save energy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 128, 5 January 2018, Pages 1340-1350
نویسندگان
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