کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7915541 | 1511020 | 2018 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal performance of a meter-scale horizontal nitrogen Pulsating Heat Pipe
ترجمه فارسی عنوان
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کلمات کلیدی
لوله پالسی گرم فریزر نیتروژن دو مرحله ای، انتقال حرارت و جرم،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
Cooling dry superconducting magnets using cryocoolers as a cold source is becoming a standard. Due to their simple operation, compact configuration, lightness, and thermal performance, Pulsating Heat Pipes (PHP) are good candidates, as two-phase thermal links, for these kind of systems. Initially developed to cool small electronic devices at ambient temperature, PHP have been also studied, in the cryogenic field, using N2, He, Ne and H2 as working fluids. In this paper, we present the thermal performances of a 1â¯m long horizontal PHP made of 36 stainless steel parallel tubes. The tube internal diameter is 1.5â¯mm, close to the critical diameter (â¼1.7â¯mm) to maintain capillary forces necessary to the PHP operation. Both, the evaporator and condenser sections are copper made and are separated by an adiabatic section. This PHP has been studied using N2 as working fluid with the condenser temperature maintained at 75â¯K. Several pressure and temperature sensors placed in the three different sections allow monitoring the thermodynamic behavior of the PHP. Tests have been performed increasing and varying the input power as well as keeping it constant during long periods of time. The maximum equivalent thermal conductivity measured is 85â¯kW/m·K. This system can transfer a maximum heat power of 25â¯W before reaching its operation limit.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cryogenics - Volume 93, July 2018, Pages 66-74
Journal: Cryogenics - Volume 93, July 2018, Pages 66-74
نویسندگان
Romain Bruce, Maria Barba, Antoine Bonelli, Bertrand Baudouy,