Now showing items 21-40 of 285

    • Cloud, C. Hunter; Kocur, John (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Understanding the lateral rotordynamic behavior is critical indetermining the reliability/operability of rotating equipmentWhether examining a centrifugal pump or compressor, steam orgas turbine, motor or generator, rotating ...
    • Necker, Nikolaus (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Multiphase Pumps have demonstrated their capability to operate successfully in pumping the product extremes, means 100%liquid up to 100% gas, as well as solids This duty is difficult for a pump and thus even more difficult ...
    • Smith, Patrick; Obeid, Victor; Benton, Jr., Robert; Whalen, John (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Centrifugal compressors and steam turbines commonly use hydrodynamic journal bearings These bearings can be fixed geometry(sleeve) or tilting pad type Most end users expect bearings to operate trouble free from major ...
    • Kurz, Rainer; Gunn, Ben; Brun, Klaus (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      The oil and gas business requires gas compression for a number of distinctly different applications, such as transmission, storage,gas gathering and export compression, enhanced oil recovery, recycle compression and ...
    • San Andres, Luis; Thorat, Manish; Jani, Hardik; Kaizar, Hussain (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Rotating machinery relies on engineered tilting-pad journal bearings (TPJB) to provide static load support with minimal drag power losses, relatively low pad temperatures, and ensuring a rotor dynamic stable operation End ...
    • Bhattacharya, Mantosh (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Two mission critical electric motor driven BFW (Boiler Feed Water) pumps installed in remote site, facedcontinuous failures of rotor-stator seizures during commissioning and start up of Sulfur recovery units -Pumps had to ...
    • Kandasamy, Surendran (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Experiencing a spurious trip of a turbomachinery train due to an unreliable or faulty instrument or control system can be a very costlyand frustrating experience Nevertheless, a commonly overlooked area within turbomachinery ...
    • Bruno, Simone; Annese, Francesco; Brizzi, Rita (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Acoustic resonance can develop within the hydraulic channels of the pump, especially in the long crossover channel of a multistagecentrifugal pump This phenomenon occurs when the hydraulic channel length is equal to the ...
    • Jariwala, Vishal; Chundru, Rambabu; Pettinato, Brian (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      The present work describes the development and application of a family of very high flow (VHF) stages with nominal design flow coefficient of 024 and moderate to high Machine Mach Number (Mu) of 088 The design is essentially ...
    • Kurz, Rainer; Gunn, Ben (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Many gas compressor stations use multiple gas turbine driven centrifugal compressors and the units may not beidentical For connected systems, such as pipelines, or gas field operations, compressors of several compressorstations, ...
    • Milani, Alberto; Scarbolo, Luca; Bigi, Manuele; Rizzo, Emanuele; Evangelisti, Silvia; Borghesi, Maria Vittoria; Vannini, Giuseppe; Sassanelli, Giuseppe (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Standard centrifugal compressors (CC) are designed to process dry gas or gas mixed with negligible amount of liquid Significantliquid content, namely liquid mass fraction (LMF) up to 30%, yield to rapid mechanical deterioration ...
    • Childs, Dara; Torres Rueda, Jose; Yang, Jing; Moreland, J. Alex (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Test results are presented and compared for the following annular pump seal geometries: (a) a smooth-rotor/circumferentially-grooved stator (SR/GS) and (b) a smooth-stator/circumferentially-grooved rotor (GR/SS) The GR/SS ...
    • Aronen, Robert; Marscher, William (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      This paper will explore the development of a new annular sealwear component design for use in centrifugal pumps Thedesign uses a pattern of holes (or perforations) machinedthrough a composite material wear component The ...
    • Bentz, Sophie; Pescioni, Alessandro; Grimaldi, Angelo; Lepeule, Antoine; Maragioglio, Gaspare; Perney, Gwenael (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      In the turbomachinery applications, the geared transmission equipment are among the most affected bythe lube oil characteristics and properties In a gear system the oil is used in the fluid-dynamic bearings,journal and ...
    • Hantz, Brian; Pettinato, Brian; Wang, Qingyu (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Acceptance criteria for high-speed balancing of turbomachinery are specified in API standards based on either pedestal velocity or shaft displacement, and these are discussed in detail Pedestal velocities are measured using ...
    • Cloud, C. Hunter; Pettinato, Brian; Kocur, Jr., John (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      A re-examination of the well-known Ekofisk re-injection centrifugal compressor is presented Several opportunities makethis an ideal candidate to assess how well (or not) current design and analytical methods have evolved ...
    • Schmitz, Ulrich; Panchal, Kamlesh; Schwarz, Lukas; Chavan, Shirish (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      The paper examines the case of a rotordynamic analysis and subsequent rotodynamic testing conducted during the pre-order phase for a five-stage integrally-geared centrifugal compressor, which today is operating in a refinery ...
    • Kamal, Girish (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      During the independent Asset Integrity Review (i-AIR) audit conducted on one of theoffshore production facility, use of instrument air as separation medium for separation sealof the process gas booster compressors Dry Gas ...
    • Yusoff, Dasuki; Nik Mohd, Nik Ahmad (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      3MW back pressure steam turbines has experienced a common and repetitivemechanical failure for its dual port steam governor valve Fracture surfaceanalysis at the failed valve stem reveals a distinctive sign of fatigue ...
    • Yu, John; Wang, Carl Feng; Yuan, Mingfeng; Péton, Nicolas; Guan, Xiaodong; Ye, Mingxing (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
      Accelerometers were used to measure vibration of the input shaftusing an on-line remote monitoring system Though the vibrationamplitudes were below the acceptable limit for over a year period,two bearing damages were thought ...