کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
646206 | 1457161 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The characteristics of boiling heat transfer and pressure drop of R-600a in a circular tube with porous inserts
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
This investigation was undertaken in order to better understand the characteristics of sub-cooled flow boiling heat transfer and pressure drop of a hydrocarbon refrigerant R600a (isobutane) flowing in a circular pipe within dispersed-copper porous inserts. The test was conducted at a saturation temperature of 10 °C, vapor qualities were from 0.076 to 0.87, and there was shown to be a mass flux of 120-1100 kg/m2 s and a heat flux of 12-65 kW/m2. The effects of Reynolds number and the sizes of inserts (the porosity, mean pore diameters and permeability) on the heat transfer and pressure drop of R-600a are presented. In addition, empirical correlations for estimating the boiling heat transfer coefficients and pressure drop for pure R-600a under these conditions have been proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 64, Issues 1â2, March 2014, Pages 348-357
Journal: Applied Thermal Engineering - Volume 64, Issues 1â2, March 2014, Pages 348-357
نویسندگان
Mao-Yu Wen, Kuang-Jang Jang, Ching-Yen Ho,