The working mechanism

performance in operation

and the influence of working water temperature upon air-extracting capability of the water ring vacuum pump have been analysed.Results of study show that the suction mass flow of said vacuum pump is proportional to its suction pressure.For this

a mathematical model of the water ring vacuum pump being more in line with the practical requirements has been established

the operation performance and cavitation behavior of the said vacuum pump being analysed

and the cavitation judging method and the expression formula of cavitation surplus being given.Establishing a whole mathematical model of the atmospheric-water ring vacuum pump and the condenser system

the more excellent ways for enhancing economic operation level of the condenser can be fully analysed.