期刊論文

標題 Visualization and thermal resistance measurements for a magnetic nanofluid pulsating heat pipe
學年 106
學期 1
出版(發表)日期 2017/10/01
作品名稱 Visualization and thermal resistance measurements for a magnetic nanofluid pulsating heat pipe
作品名稱(其他語言) 磁納米流體脈動熱管的可視化和熱阻量測
著者 Shung-Wen Kang; Yao-Chun Wang; Ying-Chang Liu; Hsin-Min Lo
單位
出版者
著錄名稱、卷期、頁數 Applied Thermal Engineering, Vol. 126
摘要 The use of a nanofluid as the working fluid in pulsating heat pipes (PHPs) is currently an attractive technique for heat transfer enhancement. Applying a magnetic field on a magnetic nanofluid-charged PHP enhances thermal performance. To study the mechanism of a magnetic field with magnetic nanofluid can help to reach startup faster in low heat input. A glass PHP with five turns as well as an internal diameter of 3 mm and external diameter of 6 mm was used in the study experiment. Heat input was applied at 20, 55, 90, 125, and 160 W. Deionized (DI) water and iron oxide nanofluid at concentrations of 90, 270, and 450 ppm were used as working fluids. The cooling water temperature was set at 25 °C. The experiment was conducted with and without a magnetic field. A video camera was set up to record the motion of the working fluid in the PHP, and temperatures were measured. The results revealed that the addition of a magnetic nanofluid could improve the performance of the PHP, and in the magnetic field, thermal resistance decreased with an increase in heat input for all experimental parameters. When the heat input was increased from 20 to 55 W, a marked drop in thermal resistance was observed. In addition, the nanofluid particles were securely deposited on the wall under the influence of the magnetic field. Moreover, the nanofluid enhanced boiling by depositing a layer of nanoparticles on the boiling surface.
關鍵字 Pulsating heat pipe; Magnetic nanofluid; Magnetic field; Visualization
語言 英文
ISSN 1359-4311
期刊性質 國外
收錄於 SCI;
產學合作
通訊作者
審稿制度
國別 英國
公開徵稿
出版型式 ,電子版