Now showing items 265-284 of 285

    • 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 ...
    • 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 ...
    • Lasin, Azmi MD (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      An air compressor encountered high vibration issue during its commissioning stage, leading to impeller and casing rub. Inspection performed found dislodged shrink fitted thrust collar, resulting in excessive axial movement ...
    • 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 ...
    • 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 ...
    • Mann, Louis; Ershaghi, Behrooz; Thomas, Jacob; Mayne, Trevor (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      Global demands for petrochemicals and green hydrogen usage are on the rise and are expected to continue for at least the next decade. Green hydrogen liquefiers are needed for the worldwide reduction of greenhouse gases and ...
    • 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 ...
    • 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 ...
    • Sabri, Ir Dr Harris Abd Rahman; Khaliq, Usaid (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      Turbomachinery is the heart of any platform, which generates power and compresses gas. However, the current practices of turbomachinery are entangled with various challenges and obstacles, which eventually affect the overall ...
    • Popaleny, Peter; Bibby, Andrew (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      This technical brief aims to showcase relevant information related to Model-Based Voltage and Current (MBVI) method. The paper discusses several fatal failures on the Turning Gear Motor (TGM) over the short time period of ...
    • Bidaut, Yves (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      During the commissioning of a Main Air Compressor in an Air Separation Unit, the rotor showed increased radial vibrations at the Non-Drive End probe. The RCA revealed: The vibration resulted from the excitation ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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. ...
    • 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 ...
    • Jun, Ker Pin; Sing, Ng Wei (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      A special purpose steam turbine has started to experience intermittent radial vibration spikes. The turbine is used to drive a Hydrogen Recycle Gas Compressor in Aromatics unit. No abnormality observed on the compressor ...
    • 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 ...
    • Wright, Gary; Peton, Nicolas; Drygin, Sergey; Yu, John; Davies, Dave (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      “Part 1 of the case history for this return to service follows on from the 2021 ATPS “ presentation which covered off the Expander related issue (labyrinth seal rubs) preventing the NAP 2 plant from successfully re ...
    • Zhang, Matthew (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      A wet screw refrigeration compressor had three failures and all failures were related to male rotor High- High axial displacement. The failure was concluded to be due to liquid propane formation at compressor suction, ...