Browsing by Author "Turbomachinery Symposium (19th : 1990)"

Now showing items 1-17 of 17

    • Efficient Part Load Combined Cycle Operation. 
      Stephens, James O.; Little, David A.; Hunt, Phillip; Stanaland, Rick (Texas A&M University. Turbomachinery Laboratories, 1990)
      During the oil crisis in the 1970s, many electric utilities assigned their base load portion of electric generation requirements to nuclear and coal fired steam plants. The intermediate duty in some cases was assigned to ...
    • Energy Recovery In A Gas Distribution Station By Combination Of Expanders With Planetary Gear And Optimum Single Valve Control. 
      Beer, Helmut G. H. (Texas A&M University. Turbomachinery Laboratories, 1990)
      The prevailing use of expansion gases in distribution stations can be economically replaced by the application of turbo expanders. The advantage of turbine impulse wheels is that they have high efficiencies, even at very ...
    • Gas Turbine Control Systems Incorporating Condition Monitoring And Fault Tolerance. 
      Muster, Gordon L.; Feinstein, Michael (Texas A&M University. Turbomachinery Laboratories, 1990)
      Novel concepts in gas turbine control technology incorporating condition monitoring and fault tolerance are described. Concerns with fault tolerance, system reliability, and users functionalities are discussed. The importance ...
    • An Independent Refiner's Approach - Practical Solutions To Complex Gear Problems. 
      Cary, John B. (Texas A&M University. Turbomachinery Laboratories, 1990)
      Numerous failures and near failures spanning the last quarter century have occurred on a 4000 hp, single induction, double helical speed increaser in hydrogen recycle service. A persistent and unexplainable wear pattern, ...
    • Magnetic Bearings And Dry Gas Seals - A Process Compressor Application. 
      Van Bramer, Kenneth G.; Conquergood, Charles Peter (Texas A&M University. Turbomachinery Laboratories, 1990)
      The design considerations and features along with manufacturing and operating experiences encountered on a multistage centrifugal process compressor incorporating a dry gas seal and active magnetic bearings immersed in the ...
    • Online Ultrasonic Monitoring Of Bearing Wear. 
      Chann, Jeffrey C. (Texas A&M University. Turbomachinery Laboratories, 1990)
      Unpredicted bearing failures continue to plague industry with forced outages. As a result of these outages, many industries have attempted prevention by unnecessary inspections and premature bearing replacement. This work ...
    • Piping Vibration Analysis. 
      Wachel, J. C. (Buddy); Morton, Scott J.; Atkins, Kenneth E. (Texas A&M University. Turbomachinery Laboratories, 1990)
      Excessive piping vibrations are a major cause of machinery downtime, leaks, fatigue failures, high noise, fires, and explosions in refineries and petrochemical plants. Excessive vibration levels usually occur when a ...
    • Recent Case Histories With Coupling Enclosures. 
      Calistrat, Michael M. (Texas A&M University. Turbomachinery Laboratories, 1990)
      Coupling enclosures are oil-tight guards which serve the double purpose of protecting people from the rotating coupling and returning oil that escapes past the seals back to the oil reservoir. Enclosures were, and still ...
    • Reliability Criteria For Turbine Shaft Based On Coupling Type - Geared To Have Flexibility. 
      Singh, Murari P.; Ramsey, Charles M. (Texas A&M University. Turbomachinery Laboratories, 1990)
      A turbine shaft end at the coupling is exposed not only to constant torque load but to various variable loads as well. These externally imposed variable loads come from sources like compressor surge, misalignment between ...
    • Retrofit, Upgrade, And Demothball Of Two Crentrifugal Compressor Trains. 
      Jackson, Charles (Texas A&M University. Turbomachinery Laboratories, 1990)
      The design premise in upgrading two operating plants for more compression capability is discussed. The first is a syn gas plant designed for 1000 tons/day of methanol but converted to syn gas only for a primary acetic ...
    • Retrofitting Turbomachinery With High Performance Flexible Dry Couplings. 
      Wolford, Christian C. (Texas A&M University. Turbomachinery Laboratories, 1990)
      When planning maintenance of turbomachinery, the proper selection of dry couplings to replace gear couplings should be considered. The basic criteria used when retrofitting flexible diaphragm or disc couplings is discussed.
    • Romex - An Expert System Testbed For Turbomachinery Diagnostics. 
      Lewis, David W.; Sheth, Pradip N. (Texas A&M University. Turbomachinery Laboratories, 1990)
      A rule based system developed for vibration oriented diagnosis of turbomachinery for fault identification and for predictive maintenance is described. The system is implemented in a PC based PROLOG environment, with the ...
    • Table of Contents for the Proceedings of the 19th Turbomachinery Symposium 
      Turbomachinery Symposium (19th : 1990) (Texas A&M University. Turbomachinery Laboratories, 1990)
    • Troubleshooting High Speed Couplings. 
      Schneider, Eddie L. (Texas A&M University. Turbomachinery Laboratories, 1990)
      Couplings are a major concern of turbo equipment users. Couplings can and do result in many hours of lost sleep for the plant equipment specialists, and can cause failure of equipment resulting in extended periods of ...
    • Troubleshooting Turbomachinery Problems Using A Statistical Analysis Of Failure Data. 
      Corley, James E. (Texas A&M University. Turbomachinery Laboratories, 1990)
      The use of statistical techniques to investigate machinery failure data is one of the most powerful troubleshooting tools available to the turbomachinery engineer. This analysis tool can provide a great deal of information ...
    • Understanding The Vibration Forces In Induction Motors. 
      Costello, Michael J. (Texas A&M University. Turbomachinery Laboratories, 1990)
      Squirrel cage induction motors have been used extensively in industry for over 50 years. While it appears that vibration problems are more pronounced nowadays, certain basic construction features have always existed and ...
    • Vibration Monitoring Of Turbomachinery. 
      Lifson, Alexander; Simmons, Harold R. (Texas A&M University. Turbomachinery Laboratories, 1990)
      The overall concept of vibration monitoring is presented based upon theory and the practical constraints of machinery construction, transducer characteristics and the cost/benefit ratio of available systems. General features ...