【摘要】 沸腾换热是提高能源利用率的有效手段之一,较好的形貌结构表面可以提高沸腾换热性能,提升热管导热性能,使热管导热能力加强。通过设计不同形貌结构铜板表面,搭建池沸腾实验检测平台,结合沸腾换热过程中的温差与沸腾实验现象,从接触换热面积、有效汽化核心数以及有无针翅结构的角度进一步解释沸腾换热过程中热量的传递情况和沸腾传热机理分析,实验结果表明有效汽化核心数和接触换热面积的增大确实能够提高沸腾换热性能,沟槽式针翅结构对沸腾换热的促进效果最为明显,其沸腾过程中的平均温差为4.3℃,比沟槽结构表面略小,远小于其他换热面。更多还原

【Abstract】 Boiling heat transfer is one of the effective means to improve energy efficiency,better surface topography boiling heat transfer performance can be improved to enhance the thermal conductivity of the heat pipe,heat pipe heat capacity strengthened. The design of different copper surface topography,build pool boiling experiments testing platform,combined with the temperature difference between boiling heat transfer during boiling and experimental phenomena,heat transfer from the contact area,angle,and whether the number of cores efficiently vaporization pin fin structure further explanation boiling heat transfer during the transfer case and the heat of boiling heat transfer mechanism analysis,experimental results show that the number of cores and effective vaporization heat transfer area increases the contact can really enhance boiling heat transfer performance,grooved pin fin structure on boiling heat transfer the most obvious effect of promoting its boiling process an average temperature difference of 4.3℃,the surface is slightly smaller than the trench structure is much smaller than other heating surface.更多还原