کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7045127 1457090 2018 31 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Positive impact of a tower inlet cover on natural draft dry cooling towers under crosswind conditions
ترجمه فارسی عنوان
تأثیر مثبت یک پوشش ورودی برج به برجهای خنک کننده خورشیدی خشک تحت شرایط صخره ای
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
This study proposes a tower inlet cover to improve the performance of the small natural draft dry cooling tower (NDDCT) under crosswind conditions. CFD analyses are performed on a small NDDCT with tower inlet covers of different lengths, and the CFD model is validated against experimental results. The air temperature, air pressure, air flow and heat flux fields are presented, and the thermal performance for each heat exchanger and the NDDCT are obtained using CFD simulations. The CFD simulation results show that the high-pressure zone around the tower side wall, formed by the crosswind, causes the decrease in air flow through the tower and the deterioration in tower performance with a crosswind. The tower inlet cover can improve the tower performance in crosswinds by increasing the air flow of the heat exchangers. Tower inlet covers with lengths of 1.5 m, 3 m and 4.5 m improve the tower heat load by 40-65%, 70-130% and 85-230%, respectively, when the crosswind increases from 4 m/s to 12 m/s.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 139, 5 July 2018, Pages 283-294
نویسندگان
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