کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10127270 | 1645050 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The results of comparative analysis and tests of ammonia loop heat pipes with cylindrical and flat evaporators
ترجمه فارسی عنوان
نتایج حاصل از تجزیه و تحلیل تطبیقی و آزمایشات لوله های گرم حلقه آمونیاکی با اواپراتور استوانه ای و صاف
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کلمات کلیدی
حلقه لوله حرارتی، اواپراتور بار حرارتی، مقاومت حرارتی، شار حرارتی، خنک کننده الکترونیک،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Comparative analysis and tests of ammonia loop heat pipes (LHPs) with a flat disk-shaped evaporator 40â¯mm in diameter and a cylindrical evaporator 10â¯mm in diameter equipped with a 40â¯mmâ¯Ãâ¯40â¯mmâ¯Ãâ¯12.2â¯mm copper interface were conducted. Both evaporators had the same heated surface 12.56â¯cm2 in size. The length and the diameter of the vapor line and the condenser were also equal. Tests of LHPs were conducted at +90°, 0°, â90° angles with respect to gravity and identical condenser cooling conditions at +20â¯Â°C heat sink temperature. For the cylindrical evaporator, the maximum heat load of 400â¯W (31.8â¯W/cm2) was reached at a junction temperature of 86.5â¯Â°C. For the flat evaporator, the maximum value of heat load was 320â¯W (25.5â¯W/cm2) at a junction temperature of 91â¯Â°C. For the cylindrical evaporator, the minimum value of thermal resistance of 0.064â¯Â°C/W was reached at maximum heat load. For the flat evaporator, it was 0.067â¯Â°C/W at 180â¯W heat load. As orientation was shifted, the value of the maximum heat load fluctuated by no more than 20-25% for both devices, while the value of the minimum thermal resistance fluctuated by no more than 4% for the cylindrical evaporator and no more than 12% for the flat one.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 144, 5 November 2018, Pages 479-487
Journal: Applied Thermal Engineering - Volume 144, 5 November 2018, Pages 479-487
نویسندگان
Y.F. Maydanik, S.V. Vershinin, M.A. Chernysheva,