Parametric Characterization on the Thermal Performance of a Closed Loop Pulsating Heat Pipe
سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 212
فایل این مقاله در 10 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JAFM-9-2_011
تاریخ نمایه سازی: 5 بهمن 1400
چکیده مقاله:
Recently closed loop pulsating heat pipes have been receiving much attention because of their potential applications in high heat flux micro-electronic systems. They work by self thermal driven oscillation without any mechanical parts. Though they are simple in structure, understanding of the heat transfer mechanism is highly complex having a strong thermo- hydro dynamic coupling governing their performance. In this paper, an experimental study on a closed loop PHP with a single turn has been conducted there by providing vital information regarding parameter dependence on its performance. The PHP is made of brass tube having an internal diameter of ۲ mm and outer diameter of ۳ mm. The parametric characterization has been done for the variation in internal diameter, fill ratio, working fluid and orientation of the device. The working fluids Acetone, Methanol, Ethanol and Propanol are considered for experimentation with volumetric filling ratios of ۵۰%, ۶۰%, ۷۰% and ۸۰%. Input heat power of ۷ to ۱۲ W is varied at the evaporator section. The CLPHP is also verified for its thermal performance at ۰۰, ۳۰۰ and ۶۰۰ orientations. The transient and steady state experiments are conducted and operating temperatures are measured using K- type thermocouples. The results highlighted that the thermal performance of a PHPis strongly influenced by change in fill ratios, orientation and heat input. ۸۰% fill ratio yields an effective heat transfer rate for a horizontal mode of operation. Appreciable fluid movement and better heat transfer rate are observed for the ۳۰۰ orientation of PHP operation. Acetone exhibits better heat transport capability compared to other working fluids in all orientations.
کلیدواژه ها:
Electronics cooling ، Pulsating heat pipe (PHP) ، influencing parameters ، Water cooling ، Experimental study
نویسندگان
C. Sreenivasa Rao
JNTU college of Engineering, Hyderabad, Andhra Pradesh, ۵۰۰۰۸۷, India
A. Gupta
JNT University, Hyderabad, Andhra Pradesh, ۵۰۰۰۸۷, India
K. Rama Narasimha
Centre for Emerging Technologies, Jain University, Bangalore, Karnataka, ۵۶۲۱۱۲, India