کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
661035 1458120 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multi-artery heat pipe spreader: Experiment
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Multi-artery heat pipe spreader: Experiment
چکیده انگلیسی

We constructed a low thermal resistance, multi-artery heat pipe spreader vapor chamber by designing a thin (monolayer) evaporator wick and distributed permeable columnar arteries supplying liquid (water) to highly concentrated heat source region. The condenser wick is layered copper screens in intimate contact with the columnar arteries. The vapor chamber is sealed and externally surface-convection cooled on the condenser side. For the evaporator wick and arteries, sintered, surface etched-oxidized copper particles are used to enhance wettability.The measured evaporator thermal resistance is less than 0.05 K/(W/cm2) using a 1 cm2 heat source, and the critical heat flux is about 380 W/cm2. This is in good agreement with thermal–hydraulic network models prediction, 389 W/cm2. The resistance is dominated by the small effective thermal conductivity of the evaporator wick and by the small conduction path through the receding meniscus within it. This resistance decreases nonlinearly with the heat flux, due to a decrease in the radius of the receding meniscus.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 53, Issues 13–14, June 2010, Pages 2662–2669
نویسندگان
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