کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11012141 | 1801030 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Two-phase flow characteristics of R32 in horizontal multiport minichannels: Flow visualization and development of flow regime map
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The two-phase flow characteristics of R32 were experimentally investigated for horizontal multiport rectangular minichannels with hydraulic diameters of 0.5 and 1.0â¯mm. The two-phase flow was observed using a high-speed camera, with a mass velocity range of 30-400 kgmâ2sâ1 at a saturation temperature of 15â¯Â°C. The effects of mass velocity, quality, and channel size on the two-phase flow were clarified. The observed two-phase flow was classified into intermittent, transition, and annular flow regimes. The intermittent flow regime was observed at a lower quality region. The quality of transition from intermittent to transition flow regimes decreased with increasing mass velocity and channel size. Previously proposed flow regime maps could not predict the two-phase flow regime in multiport rectangular minichannels with sufficient accuracy. Thus, a new prediction method of flow regimes for multiport minichannels, considering channel size, was developed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refrigeration - Volume 95, November 2018, Pages 156-164
Journal: International Journal of Refrigeration - Volume 95, November 2018, Pages 156-164
نویسندگان
Daisuke Jige, Kikuchi Shogo, Hikaru Eda, Norihiro Inoue, Koyama Shigeru,