... Abstract Compressor performance maps are a key feature of gas pipeline simulations. This paper explains the physics behind centrifugal compressor performance maps. Included are the thermodynamics of gas compression, the aerodynamics of centrifugal compressors, as well as the function...

... in piping systems can be generated by reciprocating compressors, centrifugal compressors, flow-induced vortex-shedding, pressure reducing valves, or turbulent flow. Of these sources, reciprocating compressors and flow-induced vortex-shedding produce the majority of pulsations that cause noise and vibration...

... ABSTRACT The paper concerns the problem of optimal control of a natural gas transmission system consisting of a compressor station and adjacent pipeline sections. Natural gas is supplied with two types of compressors, namely gas turbine driven centrifugal compressors and motor-compressors...

... ABSTRACT Centrifugal compressors are subject to transient events, such as emergency shutdowns, which can cause energetic surge events during rapid shutdown transients. Many modeling tools are used to predict the behavior of compressor systems during fast transient events. Even more...

... pressure rise (choke). The operating envelope of a centrifugal compressor is limited by the maximum allowable speed (or, for other control means, the maximum guide vane angle), the minimum flow (surge flow), and the maximum flow (choke or stonewall), and the minimum speed (Figure 1). valve...

... is analyzed, thus verifying the model and the simplifications. The impact of piping geometry, valve sizing, and instrumentation on the results are also covered. INTRODUCTION A centrifugal compressor, operating within a compressor station (Figure 1), will exhibit a stability limit that prevents it from...

... ABSTRACT This paper describes the fundamental performance of gas turbines and centrifugal compressors (known as "turbomachinery"), and how to model them for pipeline simulations. Previous P.S.I.G. papers have described very well how to model gas turbine driven centrifugal compressors, using...

... ABSTRACT Centrifugal compressors are required to rapidly shutdown or trip in the event of a high vibration, a loss of lube oil, or a similar alarm condition and to avoid energetic surge events during these rapid shutdown transients. The recycle valve and its controller and actuator as well...

... ABSTRACT Thermo-hydraulic simulations of centrifugal compressors are usually based on a set of information derived from manufacturer design tools that are used for compressor modeling. When operating gas pipelines transportation companies use the simulation tool to predict and anticipate...

... delivery points for the customers. The scope of this work is the study and analysis of the non programmed compressor out of service. It includes all the compressors, "Reciprocating" or "Centrifugal". MATERIALS AND METHODS Sorting Data We worked with 29 centrifugal compressors, 31 reciprocating...

... ABSTRACT This paper explains the physics of centrifugal compressor operation that are relevant to pipeline simulation. Topics include the thermodynamics of gas compression, the aerodynamics of centrifugal compressors, as well as the function of important subsystems such as seals and surge...

... ABSTRACT Gas turbines and centrifugal compressors are the preferred means of compressing the gas in pipeline systems. Both gas turbines and centrifugal compressors exhibit performance characteristics that depend on the operating point imposed on them by the pipeline operation. It is, thus...

... difference method, which provides solution stability, even for relatively large time steps. The algorithm for solving the nonlinear finite difference equations of pipe flow is based on the Newton-Raphson Method. The compressors within the compressor station are modeled using centrifugal compressor map-based...

..., or gas turbine driven, centrifugal compressors. The fuel used for compression is calculated through a manufacturer's curve, or a curve developed by the individual company. As power deregulation continues to be adopted across the United States, pipeline companies are beginning to replace gas-fired...

... centrifugal compressor OPTIMIZED CONTROL OF GENERALIZED COMPRESSOR STATION Tom% Jenicek Jaroslav Krdik Optimized Control of Generalized Compressor Station Tom& Jenic ek and Jaroslav Krcilik SIMONE Research Group Pod vodarenskou VW 4, 182 08 Praha 8, Czech Republic tel.: (. .422) 6605 2350, (. .422) 6605...

... compressor components. Presented here are the fundamental thermodynamic equations used to model reciprocating and centrifugal compressors. These equations are then developed into the more practical form used in performance modeling. The types of prime movers used to drive natural gas compressors...