抄録
An ejector can transform the expansion energy of the driving flow into the pressure build-up energy of the suction flow. Therefore, by utilizing the ejector instead of the expansion valve for the absorption and the compression cycle, the performance of the refrigerator can be greatly improved. Until now, many studies have been conducted with regard to the single-phase flow ejector. But, single or two component two-phase flow ejector which needs for the compression and absorption cycle has not been examined sufficiently. This paper constructs the simulation model of single and two component two-phase flow ejector and investigates the characteristics of that ejector by the simulation. Working fluids are ammonia, CO2 and ammonia-water mixture. As a result, the optimum mixing section inlet pressure exists to maximize the performance of the ejector. And the ejector performance is analyzed in detail.
