Pressure exchanging ejector and methods of use

摘要

A novel pressure-exchange ejector is disclosed whereby a high energy primary fluid compresses a lower energy secondary fluid through direct fluid-fluid momentum exchange. The pressure-exchange ejector utilizes non-steady flow principles and supersonic flow principles to obtain an ejector-compressor which can attain substantially higher adiabatic efficiencies than conventional ejectors while retaining much of the simplicity of construction and the low manufacturing cost of a conventional ejector. By virtue of the capabilities of the ejector to compress high volumes of secondary fluid, an ejector refrigeration system utilizing water and other environmentally benign refrigerants is disclosed. By virtue of the capability of the pressure-exchange ejector to operate at temperatures exceeding the capability of conventional turbo-machinery, topping cycles for both a Rankine power cycle and a gas turbine engine are disclosed which will increase their thermal efficiencies and thereby save non-renewable energy reserves and reduce the emissions of greenhouse gases.