Operating process of a refrigeration low-speed compressor with intensive cooling

In the presented work the peculiarities of change of instantaneous parameters of the compressible refrigerant (R134a) during the cycle time, caused by design and mode parameters of the low-speed compressor, are considered. The authors carried out a numerical calculation of the operation parameters of a low-speed refrigeration compressor in the specified ranges of operating parameters and in comparison with a high-speed machine operating on R134a freon. The numerical calculations for the refrigerating low-speed stage on R134a refrigerant allowed to analyse the operating process and to obtain integral characteristics: volumetric effciency, indicative isothermal efficiency, refrigerating coefficient. The prospects of application of low-speed machines as an alternative to single and multi-stage high-speed refrigeration compressors is shown.