STUDY ON CIRCULATION FLOW IN CLOSED LOOP PULSATING HEAT PIPE
(0) This research utilized 6 mm outer diameter and 3 mm inner diameter glass tubes to manufacture 9 turns Closed-Loop Pulsating Heat Pipe(CLPHP) with a total length of 1980mm.For achieving the loop circulation easily, a water cooling system kept at 35 ℃ was used as the condenser.The experiment was conducted to evaluate the thermal resistance under different fluid filling ratios (20%, 30%, 40%, 50%, 60%, 70% and 80%), and at a series change of heat inputs (40W, 80W, 120W, 160W, 200W).Through a digital video camera, the visualization experiment was carried out to observe the circulation flow period in the PHP.A Styrofoam ball was designed to put into the tube for a better observation and a correct estimation of fluid flow direction.Circulation times and circulation period were observed and calculated fiom different filling ratio tests.The results showed that PHP reached fully circulation under the filling ratio of 60%, 70%, and 80%, at an input power of 200W.The circulation can be categorized into clockwise circulation, counterclockwise circulation and transition circulation status.The shorter circulation period happened as fidling ratio was 80%.We also found that there were more counterclockwise circulation occurred in each experiment.
Pulsating Heat Pipe Circulation Flow Circulation Period
Pai-Chun Hsiao Chien-Hsuan Chan Shung-Wen Kang Yu-Hsing Lin
Department of Mechanical and Electro-Mechanical Engineering, Tamkang University 151, Ying-Chuan Rd., Department of Mechanical and Computer Aided Engineering,St.Johns University, 499, Section 4, Tam-Ki
国际会议
The 11th International Heat Pipe Symposium(第十一届国际热管研讨会)
北京
英文
131-137
2013-06-09（万方平台首次上网日期，不代表论文的发表时间）