Research progress of enhanced heat transfer performance of ultrathin vapor chamber
With the advantages of high thermal conductivity,excellent temperature uniformity,compact structure,and high reliability,the ultrathin vapor chamber(UTVC)has become an effective way to deal with high heat flux heat dissipation in restricted space.However,the narrow liquid reflux channel and vapor flow channel of the UTVCs weaken the heat transfer capability of the UTVCs.To improve the heat transfer performance of UTVCs,researchers have conducted a number of studies,mainly including the wick structure optimization design,the surface modification of the internal structure,and the development of novel working fluids.In this paper,the research status and development tendency of the above three ways to improve the heat transfer performance of UTVCs were summarized comprehensively and systematically,and the solutions to the shortcomings of current studies were prospected.The development of novel wick structures with both high capillary pressure and low flow resistance will continue to be a focus of future research.Moreover,in terms of the surface treatment,studies of the hydrophobic treatment of condensing surfaces of UTVC can be further conducted.In addition,the development of new working fluids suitable for UTVC is also required.
ultrathin vapor chamberenhanced heat transferwick structure optimizationsurface treatmentnovel working fluid
国家科技期刊平台
NSTL
万方数据
