کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
648230 1457193 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A study on the simulation and experiment of a microchannel counter-flow heat exchanger
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
A study on the simulation and experiment of a microchannel counter-flow heat exchanger
چکیده انگلیسی

Numerical simulations and experimental tests were carried out to study the fluid flow and heat transfer characteristics for a rectangular-shaped microchannel heat exchanger. Moreover, influences of gravity to heat transfer and pressure drop behaviors of the microchannel heat exchanger were presented by variation of the physical inclinations of the microchannel heat exchanger system used for experiments. For experimental results, a heat flux of 17.4 W/cm2 was achieved for the heat exchanger. Besides, the results obtained for the actual effectiveness and for the effectiveness (the so-called effectiveness-NTU method) were determined. In this study, the pressure drop decreases as the water temperature rises. As the pressure drop increases from 880 to 4400 Pa, the mass flow rate increases from 0.1812 to 0.8540 g/s. In addition, the results obtained from numerical analyses were in good agreement with those obtained from experiments, with discrepancies of the heat transfer coefficient estimated to be less than 9%.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 30, Issues 14–15, October 2010, Pages 2163–2172
نویسندگان
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