Abstract
The development of high efficiency refrigeration cycle is important for energy saving in order to inhibit global warming. The refrigeration cycle with two-phase ejector is very useful to decrease compressor force and raise the coefficient of performance of the refrigeration cycle. In order to make clear the characteristics of the two-phase ejector refrigeration cycle, the cycle simulation is developed in this study. The following results were obtained by using this simulation. The increment of the condenser pressure and decrement of the sub-cool temperature are effective for raising the coefficient of performance of the refrigeration cycle. The energy efficiency of the two-phase ejector used in this experiment was approximately 12%. The efficiency is expected to be increased by the improvement of the mixing characteristics of the ejector and the nozzle efficiency.
