Research on Performances of the Pressure-Exchange Ejector

The ejector technology is a commonly used in nature gas exploration. In this article the pressure-exchange ejector is introduced and researched to solve the low efficiency problem of common ejector during low pressure ratio condition. The results show that when pressure ratio is kept fixed, ejection rate decreases with the compression ratio increase, an optimum ratio exist; the pressure-exchange ejector have higher isentropic efficiency and ejection rate when the pressure ratio is under three, it also applies to wilder operation condition. It is both practical valuable and theoretical significant to research on pressure-exchange ejector for China’s gas and oil fields.