To investigate the working fluid of the oscillating heat pipe with high heat transfer efficiency,an experimental investigation was conducted to study the heat transfer performance of R32 oscillating heat pipe with filling ratios of 30％to 70％,operating angles of 90°,45°,and 0°,heating powers ranging from 10 W to 250 W,and diameters of 1 mm and 2 mm.The results show that oscillating heat pipe exhibits minimal thermal resistance at low filling rates.Within the range of operating angles from 90° to 45°,the heat transfer performance is insignificantly influenced by the operating angle.When the operating angle is 0°,oscillating heat pipe cannot start.With the increase of heating power,the thermal resistance of the oscillating heat pipe initially decreases and then increases when the filling ratio is below 50％,when the filling ratio is greater than 50％,the thermal resistance decreases initially and then stabilizes.The oscillating heat pipe with a diameter of 2 mm has the best heat transfer performance,with a minimum thermal resistance of 0.12 ℃·W-1.
关键词
R32脉动热管/充液率/操作角度/管径/传热性能
Key words
R32 oscillating heat pipe/filling ratio/operating angle/diameter/heat transfer perfor-mance
维普
万方数据