热管性能评价准则探讨

传统评价热管的传热性能的方法是比较热管的等效导热系数(有效寻热系数、当量导热系数、相当导热系数)的大小,其不足之处是几何因素与传热因素混在一起来评定传热性能。为此,在剖析传统评价热管的传热性能的方法的基础上,提出了用等效对流换热系数来评价热管性能,等效对流换热系数客观地描述了热管综合的传热能力,其值的大小可以作为判断热管传热性能优劣的标准。同时建立了相应的理论模型,从而使对热管性能的评价更加完善、更加合理。

Exploration on Evaluation Criterion of Heat Pipe Performances

Traditional evaluation method of heat pipe heat transfer performance is to compare the equivalent heat conduction coefficient (effective heat conduction coefficient, equivalent weight heat conduction coefficient, etc.), whose shortage is mixing the geometrical factors with heat transfer factors to evaluate heat conduction performance. Therefore, it is proposed here to use equivalent convection heat transfer coefficient for evaluating heat pipe performance. The equivalent convection heat transfer coefficient objectively describes the comprehensive heat transfer ability of heat pipes, the value of which can be the standard of judging the heat transfer performance of heat pipe. Besides, the corresponding theoretical model is established so that the evaluation is more perfect and reasonable.