This model includes a dynamic model for the mixing process of inside refrigerant and sucked two-phase or vapor refrigerant, a dynamic model for heat transfer of the compressor shell, and a steady state model for the polytropic compression. 此模型包括吸入气相或两相制冷剂与腔内制冷剂混合过程的动态模型、壳体换热过程的动态模型和气缸内制冷剂压缩过程的稳态模型。