TY - JOUR
TI - Experimental investigation of flow characteristics in a vertical vibration two-phase loop thermosyphon
AU - Wang Zhifeng
AU - Li Fajing
AU - Chai Mu
JN - Thermal Science
PY - 2022
VL - 26
IS - 5
SP - 4367
EP - 4376
PT - Article
AB - In this paper, flow characteristics of a two-phase loop thermosyphon under  vertical reciprocating vibration are visually investigated with N-pentane as  the working fluid. The tests are performed for a heating power range of 20 W  to 40 W, the filling ratio of 30 % to 70%, and a 30 m•s-2, 35 Hz vertical  reciprocating vibration. The effect of vertical vibration on flow  characteristics of the two-phase loop thermosyphon is investigated by  comparing the obtained results with those acquired in static, thereby  providing a basis for explaining the heat transfer process of two-phase loop  thermosyphon under vibration. The results indicate that vertical vibration  promotes the rupture of a liquid plug and the transformation of the plug  flow to annular flow or wavy flow. Furthermore, the vertical vibration does  not change the distribution law of liquid flow velocity in the two-phase  loop thermosyphon. However, it will reduce the overheating and flow velocity  in the two-phase loop thermosyphon at the start-up. With an increase in the  heating power, the influence of vertical vibration on liquid flow velocity  is reduced due to continuous disturbance of the working medium in the  two-phase loop thermosyphon.