【摘要】 设计了以烧结法制备铜表面多孔层的工艺过程，并以丙酮作为介质，测试了所制备的多孔表面强化管的传热性能．结果表明，表面多孔管显著地强化了沸腾给热．以０．０７４～０．０４６ｍｍ紫铜粉和Ｒ粉的复合粉烧结多孔管为例，当热通量为２．００×１０４～６．８５×１０４ｋＪ／（ｍ２·ｈ），沸腾给热系数可达２．２３×１０４～５．２８×１０４ｋＪ／（ｍ２·ｈ·℃），比普通光滑管提高８～２４倍；总传热系数可达３８００～６２３６ｋＪ／（ｍ２·ｈ·℃），比普通光滑管提高０．７～６倍更多还原

【Abstract】 This paper presented the process of preparing porous surface in sintering. With the media of acetone, tested the heat transfer properties of prepared porous tube whose surface was enhanced. The experiment results suggested that such tube can obviously enhanced the boiling heat transfer. Take the sintering tube whose coating was made up of 200～320 mesh copper powder and R powder as example, when heat flux(q) ranged from 200×104 to 685×104 kJ/(m2·h), the boiling heat transfer coefficient can achieved 223×104 ～528×104 kJ/(m2·h·℃), the value enhanced 8～24 fold than that of smooth surface tube. The total heat transfer coefficient can achieved 3 800～6 236kJ/(m2·h·℃), the value enhanced 07～60 fold than that of smooth surface tube.更多还原