کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
663084 1458156 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cryogenic chilldown process under low flow rates
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Cryogenic chilldown process under low flow rates
چکیده انگلیسی

In this paper, we investigated the chilldown process of a horizontal tube by a liquid nitrogen flow with low mass fluxes. The flow patterns and heat transfer characteristics are studied experimentally. Visualization results illustrate the successive states of liquid–wall interaction with different mass fluxes. For a horizontal tube, the liquid filament–wall interaction is an important contributor to the heat transfer on the bottom wall while the upper wall is cooled by forced convection with superheated vapor. A phenomenological model is developed, in which the heat transfer on the bottom wall is composed of film boiling and forced convection while for the upper wall, forced convection is the only mechanism of heat transfer. A good agreement is achieved between the model prediction and the experimental result.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 50, Issues 19–20, September 2007, Pages 4011–4022
نویسندگان
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