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.e. the heat transfer coeficient of condenser being increased

the steam resistance being decreased

and the inletpressure of vacuum pump being reduced. The joint affect of these said factors makes the exhaust pressure of steam turbine to be lowered. practice indicates that adding flowequalizing device in the exhaust passage is an effective measure to improve economic behavior of the unit.