SwRI will be exhibiting at the 48th Turbomachinery & 35th Pump Symposia, Booth No. 2906.
Monday, 9/9
8:30 a.m. – 5:00 p.m., Room 360A
T4 - Centrifugal Compressors 201 Jeff Moore, Southwest Research Institute
Jay Koch, Siemens
James Sorokes, Siemens
James Hardin, Elliott Group
Rainer Kurz, Solar Turbines Incoprorated
This course supplements the Centrifugal Compressor 101 course by covering in greater detail four key areas related to compressors: aerodynamics, rotordynamics, performance and mechanical testing, and surge control. It is intended for those who attended the 101 course and wish to learn more about these topics. The course is also structured for those practicing rotating machinery engineers who have a basic understanding of the topics covered in CC101 but wish to further their understanding in these key areas.
Tuesday, 9/10
8:45 a.m. – 10:15 a.m., Room 351D
TT01 - TUTORIAL ON CENTRIFUGAL COMPRESSOR SURGE CONTROL
Jeff Moore, Southwest Research Institute
Rainer Kurz, Solar Turbines Incoprorated
Klaus Brun, Elliott Group
For every centrifugal compressor installation, the design of the surge control system is vitally important to prevent damage of the compressor internal components, seals, and bearings. While most surge control systems are capable of preventing surge for steadystate operation, emergency shutdowns (ESDs) are particularly challenging, since the surge control system must respond faster than the deceleration rate of the train. This tutorial explores various aspects of compressor surge including steady state and transient operation as well as interaction with adjacent machinery including reciprocating compressors. Experimental test data will be presented for several different scenarios.
8:45 a.m. – 10:15 a.m., Room 371A
Discussion Group P08 - Vertical Pump Problems and Solutions
Clint Zentic, Sulzer
Hemanth Satish, TransCanada
Howard Wright, ITT Goulds Pumps
Jim Kilgore, Consultant
John Merill, EagleBurgmann
Frank Korkowski, Flowserve
Justin Hollingsworth, Southwest Research Institute
Suggested Topics:
- Petrochemical industries
- Installation
- NPSH
- Materials
- Bearings
- Maintenance
- Vibration
- Lubrication
- Paper industries
- Power industries
- Tolerances
- Nozzle loads
8:45 a.m. – 10:15 a.m., Room 370A
Discussion Group T06 - Reciprocating Compressors
Bruce McCain, Oxy Oil & Gas Corporation
Ben White, Southwest Research Institute
Bruce Bayless, Valero
Suggested Topics:
- Advanced Condition monitoring
- Modern wear components design, reliability and failures
- Maintenance strategy / Best Practices
- Industry standards API 618, API 688, API 670 annex P, ISO 13631, etc.
- Capacity Control speed, recycle, unloaders (all types)
- Process gas quality and conditioning
- Couplings
- Pulsation, vibration and torsional issues
- Valve design, reliability, and fouling
- Packaging / Size and Speed Considerations / Installation Type
- Field Testing
- Synchronous motor starting issues
Wednesday, 9/11
8:30 a.m. – 9:15 a.m., Room 360A
TL07 - Direct Head Measurments for Turbomachinery Design
Joseph Thorp, Aramco Services
Sarah Simons, Southwest Research Institute
Klaus Brun, Elliott Group
Brandon Ridens, Southwest Research Institute
Rainer Kurz, Solar Turbines
Incoprorated The isentropic head is one of the most important physical properties for the design and testing of compressors and turbines. It is a critical parameter for the determination of machinery work and power from test data and the associated equipment sizing or matching calculations. To determine enthalpy rise for a process, a path function between two thermodynamic states must be numerically integrated that includes at least three other thermodynamic gas properties such as density, specific heat, and speed of sound, and their derivatives. To address the high uncertainties in the determination of enthalpy change, and thus, head, a novel method and apparatus was developed for the direct measurement of this property. This paper describes the test apparatus and method that were developed for direct head measurements and demonstrates it using several gas mixture test cases. The results showed that the isentropic head could be measured for any gas and pressure/temperature state with an uncertainty of less than 0.5%. These test results for enthalpy rise can be used to improve existing equation of state prediction accuracy or directly input to the turbine or compressor design process for any specified application and operating condition.
8:30 a.m. – 10:00 a.m., Room 371C Discussion Group
T07 - Advanced Topics In Centrifugal Compressor Design
Mark Sandberg, Sandburg Turbomachinery Consulting LLC
Leonardo Baldassarre, BHGE
Urs Baumann, MAN Diesel & Turbo Schweiz AG
Mark Kuzdzal, Siemens
Jeff Moore, Southwest Research Institute
Brian Pettinato, Elliott Group
James Sorokes, Siemens
Suggested Topics:
- Meeting current rotordynamics stability standards
- CO2 Compressors
- High flow coefficient/Mach number impellers
- Coupling and alignment impacts on asymmetric rotordynamics
- Sour gas/Chloride implications on material selection
- Complicated high pressure gas properties
- Validity of CFD modeling
- Modern manufacturing/forming methodologies
- Simulation and dynamic process modeling
- Helmholtz Resonators/Acoustic Attenuation
- Testing in extreme overload/choke conditions
- Tripping of compressors in surge conditions
- Future compressor design/development challenges
- Control challenges associated with sophisticated cent. compr. Design
- Performance and mechanical monitoring of compressors
2:00 p.m. – 3:30 p.m., Room 370C Discussion Group
T16 - Compressor Controls
Mark Sandberg, Sandburg Turbomachinery Consulting LLC
Rainer Kurz, Solar Turbines Incoprorated
Henry Borchard, Chevron
Jeff McWhirter, Rockwell Automation
Meera Day-Towler, Southwest Research Institute
David Downing, Elliott Group
Mark Weatherwax, Chevron
Suggested Topics:
- Surge Detection Logic - Trip or not on Surge Detection?
- Compressor Control Redundancy Requirements
- Is the primary purpose of an anti-surge valve a control or protection?
- Check valve locations and their impact on controllability
- Fallback Strategies of surge control flow transmitter failure
- Suction throttling experience - Inside or outside of the recycle loop
- Cost vs Benefit of implementing load sharing
- Controls Obsolescence
Thursday, 9/12
8:53 a.m. – 9:15 a.m., Room 360A
CST02 - Chandlersville and St. Paul: Unique Piping Vibration Issue in a New Centrifugal Compressor Installation
Eugene Broerman, Southwest Research Institute
Sarah Simons, Southwest Research Institute
Ben White, Southwest Research Institute
Robert Smith, Tallgrass Energy
An unexpected vibration issue was seen at two of Tallgrass Energys recently installed compressor stations (Chandlersville and St. Paul) and was associated with certain operating conditions when specific combinations of the three identical centrifugal compressors were in operation. Vibration issues occurring only at certain operating conditions for each identical unit would be typical, but the unique aspect of the problem at these stations was that only certain combinations of the compressors excited a system-wide acoustic response. The vortex-shedding resonance propagated into the entire piping system to create high amplitude pulsations in the lateral lines and headers. For the above-noted vibration issue, this paper will describe the problem, before field data, the methods used to analyze the problem, the resulting solutions that were implemented, and after field data.
11:30 a.m. – Noon, Room 350D
CSP11 - Testing and Troubleshooting of Pump Dry Gas Seals Operating with sCO2
Stefan Cich, Southwest Research Institute
Jeff Moore, Southwest Research Institute
Meera Day-Towler, Southwest Research Institute
During the testing of a 1 MWe power loop with super critical co2, it was discovered that dry ice formation across dry gas seals would be an issue. This case study looks at the negative effects of dry ice formation and how the problem can be prevented during loop transient operation, mainly during filling and steady hold conditions.
10:53 a.m. – 11:15 a.m., Room 361A
CST14 - Design and Implementation of Swirl Brakes for Enhanced Rotordynamic Stability in an Offshore Centrifugal Compressor
Michael Cave, Solar Turbines Incoprorated
David Moulton, Solar Turbines Incoprorated
Thom Eldridge, Shell Americas
Jason Wilkes, Southwest Research Institute
Chris Clarke, Solar Turbines, Inc.
Balaji Venkataraman, Solar Turbines Incoprorated
Jeff Moore, Southwest Research Institute
Rotordynamic stability of gas compressors at high speeds and operating pressures is a significant technical challenge. Dynamic instability must be avoided for the sake of safe, reliable and continuous operation of turbomachinery. During the last few decades, the industry has successfully used swirl-brakes in a Teeth-on-Stator configuration for many applications. This case study presents the design, testing and successful implementation of swirl-brakes for a Teeth-on-Rotor configuration to improve rotordynamic stability.
For more information, please contact David Ransom.