کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10151950 | 1666144 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental investigation of condensation flows in circular cross-section channel
ترجمه فارسی عنوان
بررسی تجربی جریان های تراکم در کانال مقطع دایره ای
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کلمات کلیدی
تراکم سازگار، کانال مقطع دایره ای، رژیمهای جریان، ضریب انتقال حرارت، افت فشار، آزمایش
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
In this work, condensation flows of pure ethanol in a horizontal water-cooled circular cross-section heat exchanger were investigated for a mass velocity ranging between 30 and 100â¯kgâ¯mâ2â¯sâ1. The inner channel of condensation has inner and outer diameters of 4â¯mm and 10â¯mm, respectively, with a heat exchange length of 1020â¯mm. An adiabatic section consisted of a transparent circular cross-section channel, of 4â¯mm inner diameter and of 130â¯mm visible length, was placed downstream of the condenser in order to visualise the condensation flows by shadowgraph technique. Two main flow regimes were identified: the wavy-stratified regime and the wavy-annular regime. A flow regime map was developed and compared with flow regime maps available in the literature. Besides, the local vapour quality and internal heat transfer coefficient were determined and compared with prediction models of the literature. Finally, the total pressure drop in the condenser was determined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 145, 25 December 2018, Pages 147-154
Journal: Applied Thermal Engineering - Volume 145, 25 December 2018, Pages 147-154
نویسندگان
Georges El Achkar, Patrick Queeckers, Carlo Saverio Iorio,