Based on model test and field application, the influence of steam flow field at condenser s tubebundle inlet upon heat transfer coefficient, steam resistance and performance of the vaccum pump has been analysed, pointing out the fact after the steam flow field at the condensor s throat of a 300MW unit is tending towards homogenity, i.
在模型试验和现场应用的基础上 ,分析了凝汽器管束入口蒸汽流场对传热系数、汽阻以及真空泵性能的影响 ,指出 30 0MW机组凝汽器喉部出口蒸汽流场趋于均匀后 ,凝汽器传热系数增加 ,汽阻减小 ,真空泵入口压力降低等因素的共同作用使汽轮机排汽压力降低。
Based on the theory of two-phase flow, the mechanism of the condenser s steam resistance which is influenced by the steam velocity field at the condenser s throat outlet was analyzed.
基于两相流的有关理论,分析了凝汽器喉部出口蒸汽流场对凝汽器汽阻影响的机理。
In many Chinese coal mines,the technology of mist retarder preventing and extingushing fire is used to stop coal spontaneous combustion and fire accident at present.
目前我国很多矿井采用汽雾阻化防灭火技术来阻止煤炭自燃和抑制矿井火灾的发生。
