Simulation of Cylinder Valves for Reciprocating Compressors

Advanced mathematical models are now used to simulate reciprocating compressors and particularly the cylinder valves. The valves represent the most critical component of these machines and need particular attention from the technology point of view. In addition, the potential variable operating conditions must be properly addressed and investigated. The pulsations generated by the compressor and piping system can have a critical impact on valve behavior. Therefore for complex situations a simulation of the complete system including pressure vessels and piping can be performed. The results of the programs include displacement, pressure drop, compression cycle, and pressure pulsations based on coefficients obtained experimentally and through advanced CFD models. Through simulation an optimum compromise between mechanical valve behavior and minimum energy consumption can be found.