Multiple nozzle ejector performance calculating model

The operating process of multi-nozzle ejector was analyzed, a theoretical model was presented for calculating the performance data of multiple nozzle ejector with a constant area mixing tube, and factors influencing on the ejector performance data are also determined. Experiments have been done to verify this theoretical calculating model, and results indicate that experimental data are comparable to theoretically calculated data within the range of operating conditions described. This calculating model may be used for reference as the multi-nozzle ejector system is designed.