The Estimation of Thermal Conditions of Highly-cooled Long-stroke Stages in Reciprocating Compressors

The results of theoretical and computational analysis of the working process of long-stroke blast cooled reciprocating compressor under high degree of gas pressurization in one stage are presented in the article. The computation method is based on the mathematical modeling of the reciprocating compressor working processes; it takes into account the influence of heat exchange processes through the walls of the working chamber, the processes of the gas flow through the spacing gaps and valves, the process of gas expansion from the clearance volume, and gas compressibility. The analysis of the thermal conditions of the rapidly cooled long-stroke stages of reciprocating compressors when compressing natural refrigerants are ammonia and propane is carried out. As efficiency criterion of the thermal conditions the average temperature of the injected gas was taken.