Prediction of Pressure Pulsation Damping Efficiency with the Use of Shaped Nozzles Based on Their Geometrical Parameters

The article presents the results of pressure pulsation damping obtained for different shapes of damping elements installed in a positive displacement compressor. On the basis of the conducted research, a prediction model was created to predict the damping of pressure pulsations based on selected parameters describing individual nozzles. The input parameters included, among others, values of ranges with different nozzle narrowing, contact surface area, gas volume and the percentage of forces acting in the longitudinal direction. The one at time (OAT) approach was used to evaluate the impact of individual input parameters on the predictive value. For the displacement compressor and for various nozzles a mathematical model with a mean absolute percentage error (MAPE) of 9.51% was obtained.