Honeycomb microchannel was applied to the evaporation section of separated heat pipe.Based on multiphase flow VOF(volume of fluid)and numerical simulation method,the flow and thermal characteristics of honeycomb microchannel separated heat pipe were investigated.The experimental feasibility was verified by the model calculation,and the influence of different filling rate and heating power on the heat transfer performance of the honeycomb microchannel separated heat pipe was simulated.The results show that the thermal resistance reaches the minimum and the heat transfer performance is the best when the liquid filling rate is 80％.With the increase of heating power at the same liquid filling rate,the starting temperature of honeycomb microchannel separated heat pipe increases,and the time to reach the peak velocity of the evaporation section is shorter and the overall thermal resistance is reduced.Finally,the heat transfer performance of honeycomb microchannel separated heat pipe is better than parallel microchannel separation heat pipe from three aspects of average temperature of evaporation section,starting time and thermal resistance.
关键词
分离式热管/仿蜂巢微通道/数值模拟/传热性能
Key words
separated heat pipe/honeycomb microchannel/numerical simulation/heat transfer performance
维普
万方数据