Now showing items 160-179 of 180

    • Superimposing Planetary Gears as Variable Speed Drives for Rotating Equipment 

      Tilscher, Martin; Lauter, Bernd; Lindenmaier, Jochen (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      There are many high-power and high-speed pumps installed in power plants, oil & gas applications and in petrochemical industry consuming a considerable amount of energy. Significant interest exists within operators to ...
    • Surge Exploration Tests and Second Quadrant Characteristic Dynamic Modeling on High Pressure Ratio Compressor (Hprc) Prototype 

      Baldanzini, Fabio; Pelella, Marco; Calosi, Mirco (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      High Pressure Ratio Compressor (HPRC) technology is based on an innovative architecture that combines unshrouded and shrouded impellers on a single high-speed shaft to achieve pressure ratios and efficiency levels higher ...
    • TANDEM DRY GAS SEALS – Design and Maintenance Considerations for Enhanced Reliability and Performance 

      Kamal, Girish (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Dry Gas Seals have been in existence in the process centrifugal compressor industry for the last three decades and majority of the compressor units in operation today are installed with Dry Gas Seals. DGS sealing and the ...
    • Technical Challenges for Compressors and Steam Turbines for Efficient and Sustainable Operation in Mega Ethylene Plants 

      Hata, Satoshi; Ikeno, Kyoichi; Tasaki, Akinori; Walton, Matt; Jain, Abhay (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Tutorial 9: Changing markets, industry demands for increased efficiency and long term operation, and availability of new technology have all contributed in development of more efficient and reliable turbomachines. The ...
    • The Challenge for the Accurate Determination of the Axial Rotor Thrust in Centrifugal Compressors 

      Bidaut, Yves; Dessibourg, Dominique (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Lecture 11: The axial thrust is basically generated by a pressure imbalance across the impeller. The impeller is subjected to a great force trying to move it against the incoming flow. The cumulative thrust of all impellers ...
    • The Development of API 682 4th Edition 

      Bowden, Peter (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Tutorial 12: API 682 was first published in 1994 and it became established as the industry leading document for mechanical seals. It promoted proven, high reliability seal solutions across refining markets. As new sealing ...
    • The Importance of Structural Modal Analysis in 2 Poles Induction Motors for LNG Application 

      Meucci, Francesco; Spolveri, Niccolo; Capanni, Francesco; Rossin, Stefano (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Case Study 18: High vibrations due to 2X electrical frequency excitation on bearing housings and frame occurred on a 20MW 2-Pole Induction Motors during acceptance tests in manufacturer workshop in stand alone configuration. ...
    • The Selection and Design of Dual Pressurized Liquid Sealing Systems 

      Huebner, Michael; Appleman, Kent (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Dual mechanical seals represent one of the most common approaches to improving seal reliability and reducing process emissions. While the presence of the pressurized barrier fluid provides significant benefits, the challenge ...
    • Torsional Modal Damping of a LCI Driven Geared Moto-Compressor Train: Evaluation, Optimization Criteria and Active Control 

      Maragioglio, Gaspare; Daniele, Sgro; Calore, Paolo; Failla, Lorenzo; Tenca, Pierluigi (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      The torsional modal response of geared compression trains driven by Variable Speed Drive Systems (VSDS) can be heavily affected by electro-mechanical interaction phenomena, both in terms of excitation mechanism and resulting ...
    • Transmission Elements: Couplings and Alignment, Gears 

      Maragioglio, Gaspare; Wolford, Chris (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Suggested Topics: • Coupling guard design • Shaft alignment and tolerances • Balancing methods • Coupling selection and specifications • Shaft alignment methods • Thermal growth considerations • Application of optical ...
    • Turbine Basic Knowledge of Steam Turbine Short Course, ST?101/201 Combined 

      Nishiyama, Kenichi; Jain, Mayank; Sugimoto, Kazuaki; Walton, Matt (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      It is shown as the outline in this short course that the role of steam turbine, history, classification, basic structure, components and their function, manufacturing and design process and control system. And also, the ...
    • Turbo Expander Technology Contribution in Development of Ethylene Plant Process 

      Agahi, Reza; Ershaghi, Behrooz; Al-Halaki, Saleh; Mayne, Trevor (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Lecture 8: Ethylene plant process and turbo expander technology developments have been interrelated and dependent on each other’s. Design improvements and technology innovations associated with inflow radial turbine, turbo ...
    • Turbomachinery and Pump Vibrations 

      Maragioglio, Gaspare; Naldi, Lorenzo; Byrne, James; He, Minhui; Al-Baloshi, Hussain (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      This group will discuss plant machinery vibration detection, monitoring, and diagnosis, from a Plant O&M point-of-view. All attendees will be encouraged (but not required) to participate in discussions, and contribute ...
    • Turbomachinery Control Valves Sizing and Selection 

      Zaghloul, Medhat (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Turbomachinery Controls dedicated to centrifugal and axial compressors use several types of control valves, such as: -Antisurge (recycle) valve -Suction throttle valve -Hot-gas bypass valve -Quench control valve As the ...
    • Unexpected Vibrations in Gearbox Caused by System Integration Issues 

      Boccadamo, Gianluca; Maragioglio, Gaspare (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      This case study deals with a 24MW turbo-compressor unit composed of a gas turbine, a speed reduction gearbox with a lube oil pump mounted on its low speed shaft and two compressors in series. The unit was subject to high ...
    • Unsteady Vibration Due to Cavitation in Mixed Flow Pumps 

      Nakano, Takuya (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      In regarding to the large vertical mixed flow pump for seawater supply pump, the authors experienced the strange excessive vibration: the vibration level intermittently changed and the peak frequency was the blade passing ...
    • Using Digital Models for Condition Based Maintenance of High Pressure Pumps in SWRO Desalination Plants 

      Abdel Fatah, Amr; Lofty, Mohamed; Hassan, Mohammed; Dimitri, Antoine (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Condition based maintenance (CBM) is a very useful technique built around the concept of monitoring the operation of assets. This allows performing diagnostics, troubleshooting and determining the proper maintenance ...
    • Using Non-Standard Materials for Couplings on Special Turbomachinery Applications 

      Xu, Jack (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Technical Brief 3: Flexible couplings are a critical component in turbo-machinery train. It is a challenge and very important for coupling designers to select suitable materials for special turbo-machinery applications. ...
    • Vibration Analysis of Gas Turbine’s Transportation Carrigage and Warranty Issues 

      de Guarda Matos, Danilo; Silva de Matos, Wiriton (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      This paper describes the investigation of whether the vibration shock limits were exceeded on the transportation of 2 gas turbines. This investigation was requested due to an improper suspension type of the carriage used ...
    • Vibration Field Problem Resolved with Analytical Diagnostic Approach and Innovative Impeller Design 

      Schiavello, Bruno; Cicatelli, Giancarlo (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Case Study 20: Several pumps of same design exhibited field vibrations above API limits, dominated by Vane Passage Frequency (VPF). Root cause analysis included both experimental and theoretical paths. Experimental ...