To evaluate the performance of the ejector-expansion refrigeration cycle (EERC) using
zeotropic mixtures, a numerical study is conducted.This
improvement rises at high condensing temperature or low evaporating temperature.The
exergy analysis shows that the compressor and ejector contribute the most exergy
destruction, and the cycle exergy efficiency achieves a maximum value with MFt of 0.7.A constant-pressure two-phase ejector
model for zeotropic mixtures is established.