期刊
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
卷 45, 期 13, 页码 19351-19362出版社
WILEY
DOI: 10.1002/er.7041
关键词
heat transfer performance; pulsating heat pipe; ultrasonic cavitation
资金
- Henan provincial key science and technology research projects [192102310244]
- National Natural Science Foundation of China [51706208]
This study experimentally investigated the effect of ultrasonic on the heat transfer performance of a pulsating heat pipe (PHP), showing that ultrasonic can enhance heat transfer performance at certain heating powers while also causing deterioration at higher powers. Furthermore, the presence of more vapors confirms that ultrasonic cavitation effectively accelerates phase transition.
The pulsating heat pipe (PHP) has become one of the most promising devices to dramatically remove heat for electronic devices. This work focuses on the experimental investigation of ultrasonic on the enhancement of heat transfer of PHP, and further discusses this effect at the different working fluids. The results indicate that the external region of PHP exhibits more intense oscillation motion of working fluids than that of internal-region. The heat transfer performance enhanced assisted with the ultrasonic at the heating power of 5 to 20 W but deteriorated at 25 W. For details, the heat transfer coefficient (HTC) increased 72.6%, and the internal and external start-up times reduced 57.8% and 2.2%, respectively. Furthermore, the numerous vapors confirm that the ultrasonic cavitation would effectively accelerate the phase transition. Finally, it also discusses the couple effect between the ultrasonic and different working fluids on heat transfer coefficient. The maximum HTC of 1.85 is obtained at the heating power of 15 W for the PHP charged with acetone. In addition, the trend of HTC of PHP filled with acetone shows much more stable assisted with ultrasonic varying from the heating power inputs. Highlights The thermal performance was revealed by internal and external region of PHP The directly enhanced method of ultrasonic cavitation was introduced The novel index of the heat transfer coefficient (HTC) was proposed The couple effect ultrasonic on the enhancement of heat transfer was discussed with different working fluids
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据