Now showing items 21-34 of 34

    • Dry Gas Seals for Compressors 

      Weyermann, Hans; Quoix, Bernard; Baldassarre, Leonardo; Delrahim, Joe|Johnson, Emery; Auzenne, Chris (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      How to specify an integrally geared compressor Typical process applications Controlling an integral gear compressor - IGV, VFD Rotordynamic considerations
    • Dry Gas Seals: General (Installation, Operation, Troubleshooting, and Retrofitting), Controls 

      Asokan, S.P.; Srinivasan, R Sathya; Baldassarre, Leonardo; Bhat, Vasanth; Carmody, Chris; Doorenbox, Athal; Goebel, Daniel; Weegenhausen, Michael; Forsthoffer, Michael Sean; Forsthoffer, William Eugene; Woon Lip, Teo (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Suggested Topics for Dry Gas Seals Discussion group: • DGS operating characteristics • Unidirectional versus bidirectional • Seals faces and seats, O rings materials • Explosive decompression • Primary seal gas supply ...
    • Early Detection Of Rotating Stall Phenomenon In Centrifugal Compressors By Means Of ASME PTC 10 Type 2 Test 

      Ishimoto, Leonardo; Silva, Raphael Timbo; de Souza Rangel, Joilson; Miranda, Marcelo Accorsi; de Norman et d'Audehove, Fabio; da Silva Marques, Bruno; Baldassarre, Leonardo; Puaut, Christophe (Texas A&M University. Turbomachinery Laboratories, 2012)
      A centrifugal compressor presenting rotating stall can exhibit many problems, as limitation on its operational range, high level of subsynchronous vibrations, reduced efficiency and premature bearing wear. There are many ...
    • Effect Of Relative Journal Bearing And Honeycomb Seal Direct Stiffness On Radial Synchronous Vibrations Of High-Pressure Centrifugal Compressors 

      Baldassarre, Leonardo; Fontana, Michele; Bernocchi, Andrea; Moretti, Michele (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      High pressure compressors are commonly equipped with honeycomb seal on the balance piston, as an effective mean to improve the rotordynamic stability of the system. The gas leakage flow across the honeycomb seal clearance ...
    • Head-flange O-rings on Barrel Type Centrifugal Compressor Units at RasGas: Issues & Resolutions 

      Shatri, Quraisy; Rajani, Rajeshkumar; Wakileh, Basel; Baldassarre, Leonardo; Cianti, Andrea; Armenzani, Alberto (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2015)
      RasGas is operating many centrifugal compressors from different major OEM’s. Of an OEM product-line, twenty-four (24) centrifugal compressors with a total rated power of roughly ~ 900 Mega-watt are in operation, out of ...
    • Honeycomb Seal Effect on Rotor Response to Unbalance 

      Baldassarre, Leonardo; Bernocchi, Andrea; Failli, Leonardo; Fontana, Michele; Mitaritonna, Nicola; Rizzo, Emanuele (Texas A&M University. Turbomachinery Laboratories, 2014)
      High pressure centrifugal compressors are often equipped with honeycomb seal on balance drum in order to optimize rotordynamic stability. In very high pressures applications (>200 bar) the direct stiffness and damping of ...
    • Improving LNG Facility Reliability and Operability Via OEM Integrated Compressor Controls 

      Galeotti, Daniele; Ramlakhan, DaveWeyermann, Hans; Broadway, Paul; Baldassarre, Antonio; Baldassarre, Leonardo (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2017)
    • Modeling Of Rotor Bow During Hot Restart In Centrifugal Compressors 

      Baldassarre, Leonardo; Fontana, Michele (Texas A&M University. Turbomachinery Laboratories, 2010)
      Rotor bow during hot restart is a common cause of high vibrations in turbomachinery. It may occur after the shutdown of a machine operating under load, if the rotor is left cooling in standstill condition (no turning gear) ...
    • Numerical Prediction And Experimental Validation Of Rotor Thermal Instability 

      Panara, Daniele; Baldassarre, Leonardo; Griffin, Duccio; Mattana, Alessandro; Panconi, Simone; Meli, Enrico (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)
      The increasing demand of higher efficiency and increased equipment compactness is pushing the modern rotordynamic design towards higher and higher bearing peripheral speeds. Due to the increased viscous dissipation, fluid ...
    • Operational modal analysis application for the measure of logarithm decrement in centrifugal compressor 

      Guglielmo, Alberto; Baldassarre, Leonardo; Catanzaro, Michael; Zague, Leandro de Oliveira; Ishimoto, Leonardo; Miranda, Marcelo Accorsi; Silva, Raphael Timbo (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)
      The results of a stability test on a centrifugal compressor during the full load test of the entire compression train are presented. A Magnetic Exciter was installed at the shaft end in order to excite the first lateral ...
    • Optimization of Swirl Brake Design and Assessment of Its Stabilizing Effect on Compressor Rotordynamic Performance 

      Baldassarre, Leonardo; Bernocchi, Andrea; Fontana, Michele; Guglielmo, Alberto; Masi, Guido (Texas A&M University. Turbomachinery Laboratories, 2014)
      The rotordynamic stability of high pressure compressors is strongly affected by the aerodynamic effects induced by the gas flow through rotor-stator seals. In particular the tangential velocity (swirl) of the gas flowing ...
    • Prediction and Mitigation of High Radial Vibrations During Hot Restart of Centrifugal Compressors 

      Fontana, Michele; Bernochi, Andrea; Conte, Gianluca; Libraschi, Mirko; Baldassarre, Leonardo (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2017)
    • Subsea Centrifugal Compressor Development - Breakthrough Technology For Oil And Gas Offshore Production. 

      Tasselli, Sabrina; Terzi, Stefano; Baldassarre, Leonardo; Masi, Andrea; Beccaluva, Riccardo; Ghirelli, Daniela (Texas A&M University. Turbomachinery Laboratories, 2002)
      As the offshore market faces deepwater production challenges, the oil and gas industry is investing in new technologies to bring down the costs in the subsea fields exploitation. A breakthrough technology solution is the ...
    • World's First 10,000 PSI Sour Gas Injection Compressor 

      Hopper, Bruce; Baldassarre, Leonardo; Deviteaux, Irvin; Fulton, John; Rasmussen, Pete; Tesei, E. Alberto; Demetriou, Jim; Mishael, Sam (Texas A&M University. Turbomachinery Laboratories, 2008)
      This paper traces the development of the original sour gas injection (SGI) concept, the methodology used for managing risks, detailed design and testing of compression train components, compressor train shop string tests, ...