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sCO2 Compression
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Supercritical Carbon Dioxide (sCO2) power cycles are a transformational technology for the energy industry, providing higher thermal efficiency compared to traditional heat-source energy conversion including conventional ...
A REVIEW OF AERODYNAMICALLY INDUCED FORCES ACTING ON CENTRIFUGAL COMPRESSORS, AND RESULTING VIBRATION CHARACTERISTICS OF ROTORS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
There are several sources of non-synchronous forced vibration of centrifugal compressor rotors. Many of them are aerodynamic phenomena, created within the gas path of the compressor. Phenomena such as impeller stall, ...
Accidental Excitation of Acoustic Resonances from Balance Holes on Rotating Disk
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
During commissioning of an open-casing test rig, a loud (above 105 dB) high pitch “squealing” sound occurred at speeds above 3,000 rpm. All elements of the rig were removed except the bearings yet the noise persisted. ...
PRECISION GROUTING OF TURBOMACHINERY
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Rotating equipment being installed in industrial environments, including refineries and chemical processing plants, are critically aligned with exact tolerances. When in operation, this equipment experiences heavy dynamic ...
Effect of swirl canceller on impeller exitation
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
This case study is concerned with effect of the swirl canceller for impeller excitation force of integrally geared compressor. The 5th stage shaft vibration of booster air compressor showed abnormal behavior as the discharge ...
A PRACTICAL GUIDE TO UNDERSTANDING LATERAL ROTORDYNAMIC ANALYSIS TO HELP IDENTIFY AND SOLVE VIBRATION PROBLEMS IN TURBOMACHINERY
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
The primary purpose of performing a lateral rotordynamic analysis for centrifugal compressors, steam turbines and other rotating machines is to ensure that there are no undesirable rotor/bearing performance issues that ...
TURBOMACHINERY FOR REFINERY APPLICATIONS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
This tutorial covers the basics, applications, and operation of compressors, expanders, steam turbines, and gas turbines in refinery applications. Modern refineries utilize a wide range of turbomachinery that must flexibly ...
RECENT TEST EXPERIENCES WITH APPLYING MULTIPLE UNSHROUDED IMPELLERS IN A SINGLE-SHAFT COMPRESSOR
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
The use of unshrouded impellers to increase the pressure ratio and volume reduction achieved in low mole weight, single-shaft compressor applications is discussed. The aerodynamic and mechanical implications of using ...
Investigation of a Compressor Coupling Failure by Torsional Excitation
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
This case study examines a repeat compressor coupling failure that was a result of a complex, dynamic interaction of components that excited the 2nd torsional natural frequency of the train. The mature unit had operated ...
Aero-Derivat ive Gas Turbine Vibration Troubleshooting Comparing Traditional ODS and
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
A large aero-derivative gas turbine in electrical generation service was exhibiting high vibration at the LP compressor section (1.5 in/s peak) at low load operation. Thorough testing, using Experimental Modal Analysis ...