کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7048637 1457130 2016 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal performance of a PCB embedded pulsating heat pipe for power electronics applications
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Thermal performance of a PCB embedded pulsating heat pipe for power electronics applications
چکیده انگلیسی
Low voltage power electronics applications (<1.2 kV) are pushing the design envelope towards increased functionality, better reliability, low profile and reduced cost. One packaging method to enable these constraints is the integration of active power electronic devices into the printed circuit board improving electrical and thermal performance. This development requires a reliable passive thermal management solution to mitigate hot spots due to the increased heat flux density. To this end, a 44 channel open looped pulsating heat pipe (OL-PHP) is experimentally investigated for two independent dielectric working fluids - NovecTM 649 and NovecTM 774 - due to their lower pressure operation and low global warming potential compared to traditional two-phase coolants. The OL-PHP is investigated in vertical (90°) orientation with fill ratios ranging from 0.30 to 0.70. The results highlight the steady state operating conditions for each working fluid with instantaneous plots of pressure, temperature, and thermal resistance; the minimum potential bulk thermal resistance for each fill ratio and the effective thermal conductivity achievable for the OL-PHP.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 98, 5 April 2016, Pages 798-809
نویسندگان
, , , ,