摘要
研究了高温金属面上覆盖砂层后的喷雾冷却换热特性，测试了砂粒颗粒大小和砂层厚度对换热特性的影响．在高温金属面上覆盖砂层后，可将高温面上的膜沸腾转化为砂粒表面的液膜蒸发，从而大幅度提高表面换热系数，强化冷却能力．
Experimental study is performed on the mist cooling of heated high temperature surface covered by a sand layer to investigate the effects of both sand size and thickness of sand layer on heat transfer charateristics in order to enhance heat transfer of film boiling region. The results denote that the sand layer can greatly enhance heat transfer in high temperature region because it changes film boiling to liquid film evaporation in the sand layer.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
1998年第1期71-74,共4页
Journal of Shanghai Jiaotong University
关键词
喷雾冷却
传热强化
高温
金属
砂层
表面
mist cooling
boiling heat transfer
liquid film evaporation
heat transfer enhancement
