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Case Studies In Turbomachinery Operation And Maintenance Using Condition Monitoring.
(Texas A&M University. Turbomachinery Laboratories, 1993)
With exceedingly high downtime costs and the need for efficient operation of turbo machinery, integrated condition monitoring, wherein a number of health parameters are analyzed, is becoming increasingly popular in process ...
Magnetic Bearing Retrofit Of A High Speed, Eight Stage Coker Compressor.
(Texas A&M University. Turbomachinery Laboratories, 1993)
The design, integration, and implementation of a successful project to retrofit a high speed, eight stage centrifugal compressor with magnetic bearings and gas face seals is presented. The application is removal of light ...
Critical Speeds And The Importance Of Stiffness - A Case Study In The Design And Testing Of A Large Mechanical Drive Steam Turbine To API Standard 612.
(Texas A&M University. Turbomachinery Laboratories, 1993)
Rotordynamics has long been one of the major considerations in the design of variable speed rotating equipment. Bearing support stiffness is a significant factor in the designer's ability to predict critical speeds and ...
Predicting And Verifying Rerated Compressor Performance Through Single Stage Scale Model And Limited Field Testing.
(Texas A&M University. Turbomachinery Laboratories, 1993)
Performance verification of centrifugal compressor rerates creates a unique challenge to turbomachinery users. It is not often practical to perform flange-to-flange performance tests on machinery already installed in the ...
The Use Of Honeycomb Seals In Stabilizing Two Centrifugal Compressors.
(Texas A&M University. Turbomachinery Laboratories, 1993)
The stabilizing effects achieved by replacing labyrinth seals with honeycomb seals are described. Although honeycomb seals have been used for some time in high pressure compressors and other turbomachinery applications, ...
The Practical Application Of CFD In The Design Of Industrial Centrifugal Impellers.
(Texas A&M University. Turbomachinery Laboratories, 1993)
The practical application of computational fluid dynamics software in the industrial turbomachinery design process is discussed. Such codes have been used for years in the design of gas turbines, but have long been ...
Shifting Critical Speeds Out Of The Operating Range By Changing From Tilting Pad To Sleeve Bearings.
(Texas A&M University. Turbomachinery Laboratories, 1993)
One property of heavily to moderately loaded sleeve bearings is the resulting asymmetric stiffness and damping coefficients. These asymmetric properties often result in split first critical speeds. Since the horizontal ...
Safety, Application, And Service Factors As Applied To Shaft Couplings.
(Texas A&M University. Turbomachinery Laboratories, 1993)
Shaft couplings are rated by their manufacturers as to how much torque they can transmit, how much misalignment they can accommodate, and the maximum speed at which they can operate. Still, manufacturers, buyers, or various ...
Lubrication And Seal Oil Systems - Common Problems And Practical Solutions.
(Texas A&M University. Turbomachinery Laboratories, 1993)
Current technologies now make it possible to build turbomachinery without the need for a lubrication and seal oil system. However, there is an established machinery population that still requires support systems for oil ...
Reduced Shaft Stiffness Lowers Running-Speed Bearing Loads And Vibration In A Single Stage Compressor.
(Texas A&M University. Turbomachinery Laboratories, 1993)
Turbomachines that run well above their fundamental lateral critical speeds (super-resonant), and are not heavily influenced by higher vibrational modes, can often benefit from reductions in shaft stiffness to lower the ...