Now showing items 1-20 of 3985

    • Barrier And Buffer Fluid Selection And Considerations For Mechanical Seals 

      Huebner, Michael (Texas A&M University. Turbomachinery Laboratories, 2016)
      The increased use of pressurized and non-pressurized dual mechanical seals has driven more installations to require the use of barrier and buffer fluids. While some end users have viewed the selection of barrier fluids as ...
    • Compression Packing: A Traditional Sealing Method Achieving High Levels Of Performance With Modern Technology 

      Tanner, Chuck; Azibert, Henri (Texas A&M University. Turbomachinery Laboratories, 2016)
      The oldest and still quite common sealing device for pumps is compression packing, so called because of the manner in which it performs the sealing function. This tutorial will explain the technology and also clarify some ...
    • High Vibration Analysis of Eddy Current Drum Coupled Motor to a Vertical Centrifugal Pump : Solution Based on EMA, ODS and FEA 

      Gamarra, Juan; Barksdale, Jody; Oquendo, Juan R.; Ferras, Jack; Hennessy, James (Texas A&M University. Turbomachinery Laboratories, 2016)
      The 35-year old pump station moves up to 43 MGD of raw wastewater to the city’s treatment facility via two 1,500-hp high-capacity pumps for wet weather flows. After the motors were refurbished in 2011, excessive motor ...
    • Solving a Sever Vibration Problem in the Downstream Piping of a Gear Pump 

      Broerman, Eugene "Buddy"; White, Benjamin; Al-Khaldi, Fahad (Texas A&M University. Turbomachinery Laboratories, 2016)
      A solution was developed for an extreme discharge piping vibration problem on an 80 hp gear pump piping system. Maximum field-measured vibration levels were over 4 ips 0-pk (200 mm/sec pk-pk). Most gear pumps are not ...
    • Your Gas Compression Application - Reciprocating, Centrifugal, or Screw? 

      Phillippi, Greg; Sutter, Jonathan; Manthey, Tim; Williams, Ben; McCain, Bruce (Texas A&M University. Turbomachinery Laboratories, 2016)
      This tutorial addresses the question of which compressor type is better suited to a given application - reciprocating, centrifugal or rotary screw- with the screw being subdivided into oil-free and oil-flooded types. The ...
    • API 682 Arrangement 2 Configurations - Considerations for Outer Seal and Support System Design 

      Kalfrin, Brian; Gonzalez, Luis (Texas A&M University. Turbomachinery Laboratories, 2016)
      API 682, now in its 4th Edition, has made a concerted effort to accurately define and distinguish between different types of seal configurations available under the designation of ‘Arrangement 2’, including 2CW-CW, 2CW-CS, ...
    • Investigation of Steam Turbine blade failure 

      Vengurlekar, Ashutosh; Fisher, Robert D.; Nakamura, Yuki; Sasaki, Yuichi; Hata, Satoshi; Ikeno, Kyoichi (Texas A&M University. Turbomachinery Laboratories, 2016)
      Blade failure was observed on a backpressure steam turbine (driving a centrifugal compressor) after it was in service for more than one year. This paper presents details of observations, inspections carried out and root ...
    • Investigation of process gass compressor shaft vibration phenomena 

      Vengurlekar, Ashutosh; Lip, Teo Woon; Little, Nathan; Yoshida, Satoru (Texas A&M University. Turbomachinery Laboratories, 2016)
      This paper presents details of investigation results of issues observed during plant start-up on a centrifugal compressor. Compressor was operated with air/ nitrogen during start-up and high shaft vibration (approx. 75 um) ...
    • Centrifugal Compressor Configuration, Selection and Arrangement: A User’s Perspective 

      Sandberg, Mark R. (Texas A&M University. Turbomachinery Laboratories, 2016)
      The detailed sizing and selection of centrifugal compressors may be somewhat of a mystery to the typical user. Once the suction and discharge process conditions and required flow rates are established, they are submitted ...
    • A CFD Primer: What Do All Those Colors Really Mean? 

      Sorokes, James M.; Hardin, James; Hutchinson, Brad (Texas A&M University. Turbomachinery Laboratories, 2016)
      This tutorial provides a general overview of computational fluid dynamics (CFD). It is not intended for CFD experts but rather for those seeking answers to questions such as: What is the role of CFD in the design / analysis ...
    • Basic Thermodynamics Of Reciprocating Compression 

      Phillippi, Greg (Texas A&M University. Turbomachinery Laboratories, 2016)
      This tutorial provides a straightforward explanation of how a reciprocating compressor works relying heavily upon the pressure- volume diagram (P-V diagram) as a point of reference. The discussion begins with a thorough ...
    • Maintenance Philosophy 

      Joseph, John P., II (Texas A&M University. Turbomachinery Laboratories, 2016)
      Goal: Develop a Maintenance Program that will Assure: Safety of Personnel and Equipment; Environmental Compliance; Long Term Business Profit f Holders.
    • Squeeze Film Dampers: A Further Experimental Appraisal Of Their Dynamic Forced Performance 

      San Andrés, Luis; Jeung, Sung-Hwa; Den, Sean; Savela, Gregory (Texas A&M University. Turbomachinery Laboratories, 2016)
      Squeeze Film Dampers (SFDs) are effective means to ameliorate rotor vibration amplitudes and to suppress instabilities in rotor-bearing systems. A SFD is not an off-the-shelf mechanical element but tailored to a particular ...
    • Rotor Balancing Tutorial 

      Kelm, Ray; Kelm, Walter; Pavelek, Dustin (Texas A&M University. Turbomachinery Laboratories, 2016)
      The purpose of this tutorial is to describe details related to shop and field balancing of turbomachinery. The target machinery is API type turbomachinery such as steam turbines, compressors, and other rotating machinery ...
    • Compressor Loadsharing Control And Surge Detection Techniques 

      Jacobson, Wayne; Staroselsky, Serge; Zaghloul, Medhat; McWhirter, Jeff; Tolmatsky, Michael (Texas A&M University. Turbomachinery Laboratories, 2016)
      Centrifugal compressor trains operating in parallel or series arrangements are complex when it comes to turbomachinery control. Methodologies for controlling compressor trains in these arrangements piping layout considerations ...
    • Subsea Compression - Current Technology and its Use to Maximize Late Life Production 

      Dettwyler, Markus; Büche, Dirk; Baumann, Urs (Texas A&M University. Turbomachinery Laboratories, 2016)
      Oil and gas production from offshore fields has been established since the second half of the last century. The continuous need and search for new fossil resources has driven the technology to adapt towards harsher and ...
    • Comparison Of Two- And Four-Pole Vsd Motors Up To 4000 RPM 

      Holopainen, Timo P.; Liukkonen, Olli; Jörg, Pieder (Texas A&M University. Turbomachinery Laboratories, 2016)
      Electric motors were originally developed for Directly-on-Line (DOL) operation. The speed of a motor was determined by the number of poles. A two-pole motor was used to reach 3600 rpm with 60 Hz grid frequency, and the ...
    • Gas Turbine Packaging Options And Features 

      Brun, Klaus; Thorp, Joseph; Kurz, Rainer; Winkelmann, Bernhard (Texas A&M University. Turbomachinery Laboratories, 2016)
      This tutorial provides an overview of typical packaging options for gas turbines in industrial applications. Applicable standards are discussed. The requirements for different systems, such as air filtration and fuel systems ...
    • The Selection and Design of Dual Pressurized Liquid Sealing Systems 

      Huebner, Michael; Appleman, Kent (Texas A&M University. Turbomachinery Laboratories, 2016)
      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 ...
    • Aero-Damping Measurements And Computation In A Full-Scale Multistage Centrifugal Compressor 

      Toni, Lorenzo; Gatta, Giuseppe; Moyroud, François; Guglielmo, Alberto; Rubino, Dante Tommaso; Ramakrishnan, Kishore (Texas A&M University. Turbomachinery Laboratories, 2016)
      Great interest is being paid by Oil & Gas industry to the design of high speed and high pressure ratio centrifugal compressors. Static and dynamic stresses are becoming higher and, under critical conditions, aerodynamic ...