Factors influencing performance of nuclear air ejector in main control rooms

An air ejector is used for emergency ventilation of the main control room when an accident happens in a pressurized water reactor nuclear power station. Sets up a system to test the performance of ejector. Based on the test system, establishes a model and analyses the performance of the air ejector. The results indicate that the inlet flow rate of compressed air is an important factor impacting the jet coefficient and the outlet air pressure of the air ejector. The distance between nozzle and mix section, the nozzle diameter and the area ratio between mix section and nozzle outlet are the important impact factors of the jet coefficient and outlet air pressure.