Limiting global warming’s effects requires a sudden reduction of greenhouse gas emissions to pursue net-zero carbon growth in the next decades. Along with this energy transition, drastic and rapid changes demand are expected many sectors, including one for centrifugal compressors. In context, new aerodynamic design processes exploiting know-how existing impeller families generate novel compress...

The application of oil-free-integrated motor-compressors has become increasingly popular in recent years. One of the significant features of this class of machinery is compactness, providing space-savings compared to traditional-oil-lubricated compressors with associated gearboxes and lubrication systems. The integration of a turbo separator with such a compressor has resulted in the creation o...

In this article will be described the improved test stand for rotating labyrinth seals that developed at COMOTI. The present rig is able to only a seal configuration in simplified environment, (air temperature max.150° C, diameter max. 300 mm, airflow rate 0.35 kg/s, pressure 9 bars). newly research infrastructure increase these limits up to: 800°C temperature, 600 mm diameter, 10 kg/s and 50 b...

Variable inlet guide vanes (VIGVs) are widely used for flow throttling and also extending the operating range of centrifugal compressors. Although there several studies on effects adding IGVs performance curve compressors, none them have focused number vanes. In current study, high-fidelity three-dimensional numerical simulations carried out to analyze VIGVs with different aerodynamic a single-...

Aim. The paper examined the matter of assessment functional dependability compressor stations (CS) underground gas storage (UGS) facilities. A definition CS and guidelines for its were proposed. Methods. Design calculation stations, scenario analysis. Results. presents: a) a definition, indicators assessment; b) an example application UGS CS; c) comparative analysis in number various versions: ...

Abstract Performance prediction plays an important role in the predesign stage of centrifugal compressors. A set loss models is usually selected and grouped to fulfill above prediction. To improve defects traditional prediction, we modified outlet velocity slip coefficient impeller by means energy average method obtain theoretical work. new volute model proposed replace semiempirical adopting a...

This paper proposes a control system for integrated pressure and surge control of centrifugal compressors for enhanced oil recovery application. The proposed control system is based on linear model predictive control. A fully validated non-linear dynamic model was developed in order to simulate the operation of the compressor at full and partial load. The model of the compression system include...