Now showing items 152-171 of 285

    • Nishiyama, Kenichi; Jain, Mayank; Fuchiwaki, Shunsuke; Woon Lip, Teo (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      A 56 MW steam turbine tripped several times over a short period of time although the trip signal was not sent. A thorough examination of the turbine at site ruled out any problems with the trip system. The pressure data ...
    • Jain, Rishav; Singh, Ayush (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      This study starts by presenting a typical ethylene plant which will act as the ‘base plant’ for this case study. Then, a ‘low�emission’ ethylene plant is introduced which employs a new cracker technology having ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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, ...
    • 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 ...
    • Visser, Frank (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      This case study discusses the hydraulic upgrade of two sets of four (25 percent) large vertical cooling water pumps. To increase the electrical output of subject power station, the cooling water pumps of block 1 and 2 had ...
    • Bidaut, Yves (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      During the mechanical test of a centrifugal compressor, the rotor experienced a sudden increase of the radial vibrations. After re-start, the compressor showed unacceptably high vibrations. The RCA revealed: The vibrations ...
    • Pernama, Sutanto A.; Vengurlekar, Ashutosh; Hor, Chong Ser; Chand, Tarun (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
    • Kuper, Michael W.; Metzmaier, Michael J. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      Laser cladding is gaining acceptance for restoration of turbine and compressor shafts, which has resulted in increased customer demand for laser cladding options. This has increased the number of laser welding suppliers, ...
    • Torres, Jose; San Andres, Luis; Yang, Jin (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      Industrial centrifugal compressors use annular gap seals, typically labyrinth type, to restrict process gas leakage from high-pressure regions to low-pressure regions. Currently liquid tolerant compressors enable efficient ...
    • Byrne, James; He, Minhui; Holscher, Norbert; Pettinato, Brian (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Turbomachinery bearings: Sleeve and tilting pad journal bearings, Thrust bearings, Babbitt bearing failures Bearing upgrades: Clearances, preload, offset, Installation, Oil Specific questions: Journal bearing fit – loose? ...
    • Raghavendr, Sreenivas; Guerrero, Armando; Gupta, Manoj (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Suggested Topics: • Turbomachinery bearings • Sleeve and tilting pad journal bearings • Babbitt bearing failures • Bearing upgrades • Clearances • Installation • Oil • Annual seals • Polymer seals -Centrifugal compressor ...