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Now showing items 11-20 of 264
Cavitation Prediction and Avoidance in Design using Semi
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Cavitation is a phenomenon that is of great concern to both the design and operation of pumps. The presence of cavitation – that is, the formation of vapor bubbles in the flowing fluid that subsequently collapses – can ...
RULE BASED SEAL SELECTION FOR PIPELINE SERVICES
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Mechanical seal selection for pipeline applications can be a challenging task considering the application pressure ranges, speeds, and the properties of the fluids being moved. Variable fluid properties present their own ...
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 ...
New Analytics to Improve Pump Performance
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Kempner Water Supply Corp. in Central Texas serves a population of 20,000. After installing VFDs, they experienced high pressure spikes which strained their pipe network as well as their staff. Line breaks became a common ...
Introduction of SCC life time estimation for fir tree design on steam turbine
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Some cracks due to stress corrosion cracking have detected in blade grooves of steam turbine. This presentation describes the residual life and its evaluate method for SCC on Fir tree blade groove.
Conversion of Influence Coefficients among Static-Couple and Multiplane Formats On Two-Plane Balancing
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
The influence coefficient (IC) method is typically used in balancing, especially on-site. For a two-bearing machine, there are basically two approaches to apply this method. The first one is to treat it as a multiplane ...