Characteristic Research On Heat Dissipation Of Loop Heat Pipe Applied To The Communication Base Station

This paper analyzed the importance and feasibility of the base station energy saving based on the tensions from the current energy and the trend of energy conservation.Meanwhile,this paper also introduced some software of building energy consumption simulation and related simulation example analysis.This paper chose the De ST software as energy consumption simulation tool to establish base station architecture model.At the same time,the related principle and heat transfer characteristics of heat pipe heat exchanger were analyzed,which provides some theoretical support for this experiment.In view of the problem of using natural cold source to replace base station air condition,this paper presents a heat sink heat pipe device applied on communication base station.This paper studied the heat transfer characteristics of the loop heat pipe with different arrangement mode,different filling rate and different air velocity.Results showed that when the evaporation of the LHP was put at the height of h2 in cabinet(internal heat source location),the heat could effectively be reduced,which satisfied the base station equipment operation temperature 30 ℃.Therefore,the loop heat pipe(LHP)could effectively replace the traditional air-conditioner in the communication base station for heat transfer by relying on the thermo-driven passive cooling in the over-season and winter conditions.Different charging rates of heat pipe had a obvious influence on heat dissipation performance.In the experiment,the best charging rate of heat pipe was 50% and the temperature of corresponding cabinet test point and the LHP condenser were 27.37 ℃and 23.74 ℃ respectively.Air velocity had a great influence on the performance of the heat pipe.Therefore,in order to improve the thermal efficiency of LHP,optimize the effect base station cooling,the air speed could be controlled in about 3-5 m/s.With the increase of heat load,the loop heat pipe thermal resistance at different installation location was gradually reduced.When the cabinet equipment heat dissipation power was 1 k W,thermal resistance was around 0.008 K/W,which showed that the loop heat pipe system had a perfect heat transfer performance.