کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7049426 1457160 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Combination study of operation characteristics and heat transfer mechanism for pulsating heat pipe
ترجمه فارسی عنوان
مطالعه ترکیبی از ویژگی های عملیاتی و مکانیزم انتقال گرما برای لوله های پالایش دهنده گرما
کلمات کلیدی
لوله پالسی گرم مشخصات نوسان دما سازنده انتقال حرارت،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Pulsating heat pipe (PHP) is becoming a promising heat transfer device for the application like electronics cooling. However, due to its complicated operation mechanism, the heat transfer properties of the PHP still have not been fully understood. This study experimentally investigated on a closed-loop PHP charged with four types of working fluids, deionized water, methanol, ethanol and acetone. Combined with the visualization experimental results from the open literature, the operation characteristics and the corresponding heat transfer mechanisms for different heat inputs (5 W up to 100 W) and different filling ratios (20% up to 95%) have been presented and elaborated. The results show that heat-transfer mechanism changed with the transition of operation patterns; before valid oscillation started, the thermal resistance was not like that described in the open literature where it decreased almost linearly, but would rather slowdown descending or even change into rise first before further decreasing (i.e. an inflection point existed); when the heat input further increased to certain level, e.g. 65 W or above, there presented a limit of heat-transfer performance which was independent of the types of working fluids and the filling ratios, but may be related to the structure, the material, the size and the inclination of the PHP.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 65, Issues 1–2, April 2014, Pages 394-402
نویسندگان
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