کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7052768 1457458 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental investigation of in-tube condensation in microgravity
ترجمه فارسی عنوان
بررسی تجربی تراکم لوله در میکرو گرانشی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
This work is aimed at studying the effect of gravity when convective condensation occurs inside a small diameter channel. An experimental apparatus has been specifically designed to perform microgravity experiments during the 62nd ESA Parabolic Flight Campaign. Convective condensation heat transfer tests have been carried out at mass velocity between 70 kg m−2 s−1 and 170 kg m−2 s−1 using HydroFluoroEther HFE-7000 (1-methoxyheptafluoropropane) as the working fluid in a circular cross section channel with an internal diameter equal to 3.4 mm. The data of heat transfer coefficient and the flow pattern visualizations show that, when gravity acts perpendicular to the channel flow, it has a beneficial effect on the heat transfer coefficient by acting on the liquid distribution along the channel perimeter. In microgravity conditions this mechanism leads to a penalization which is proportional to the mass velocity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Communications in Heat and Mass Transfer - Volume 96, August 2018, Pages 69-79
نویسندگان
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