Introduction
Describes as the compress circle to calculate the pressure diagram and the efficiency of the screw compressor, our proposed model considers the mass and energy conservation laws, the leakages though various paths, and the discharge of air. We use pseudo-control volume method to describe the interaction of current and next control volumes, which affect the pressure to become higher in the outlet by pseudo-control volume method (pseudo-CV method). The reason behind this is that the pressure of next pseudo-CV becomes higher than that of current pseudo-CV, which means that the leakage between current and next pseudo-CVs becomes larger and leads to the higher pressure in the outlet.
