Now showing items 1-20 of 64

    • 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 ...
    • A High Bearing Temperature Troubleshooting of Centrifugal Heat-Pump Compressor 

      Lee, Woonsil; Kim, Chi Hyuk; Lee, An Sung (Texas A&M University. Turbomachinery Laboratories, 2016)
      On September 2013, a centrifugal heat-pump compressor began showing an abnormal temperature rise in its tilting pad journal bearing (DE-side). The phenomenon appeared when increasing the rotor speed following a process of ...
    • A Review Of Aerodynamically Induced Forces Acting On Centrifugal Compressors, And Resulting Vibration Characteristics Of Rotors 

      Sorokes, James M.; Marshall, D. Fred; Kuzdzal, Mark J. (Texas A&M University. Turbomachinery Laboratories, 2016)
      There are several sources of non-synchronous forced vibration of centrifugal compressor rotors. Many of them are aerodynamic phenomena, created within the gas path of the compressor. Phenomena such as impeller stall, ...
    • Adapting Hermetically Sealed Compressor Technology To Deal With Sour And Corrosive Gases 

      Buse, Marcel; Van Aarsen, Mark; Al-Khateeb, Eyad; Al-Jughaiman, Bader (Texas A&M University. Turbomachinery Laboratories, 2016)
      The Oil & Gas industry faces increasing challenges to meet growing energy demands with the most sustainable exploration and production techniques. Compressor manufacturers have responded to these challenges with the ...
    • 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 ...
    • An End-User’s Guide To Centrifugal Pump Rotordynamics 

      Marscher, William D. (Texas A&M University. Turbomachinery Laboratories, 2016)
      This tutorial outlines the basics of pump rotordynamics in a form that is intended to be Machinery End User friendly. Key concepts will be defined in understandable terms, and analysis and testing options will be presented ...
    • Analysis and on-stream countermeasures of sub-synchronous vibration of a centrifugal compressor 

      Lee, Sangjoo (Texas A&M University. Turbomachinery Laboratories, 2016)
      The sub-synchronous vibration could be attributed to many causes such as gas-whirl, oil whirl, looseness and so on. To prevent sub-synchronous vibration, manufacturer analyzes stability during design stage. But field ...
    • 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, ...
    • Application of Dynamic pressure-balanced Seals in a Multi-stage Centrifugal Compressor 

      Stiles, David T.; Sandberg, Mark R.; Justak, John F.; Wilcox, Ed; Kuzdzal, Mark J.; Rohrs, Charles A.; Miller, Harry F. (Texas A&M University. Turbomachinery Laboratories, 2016)
      Test results for an ASME Power Test Code 10 (PTC) Type 1 test of a 4,500 psia (310 Bara) discharge pressure gas lift centrifugal compressor outfitted with dynamic pressure-balanced seals at the impeller eyes; shaft interstage ...
    • Applying The Energy Institute And GMRC/PRCI Guidelines For The Avoidance Or Reduction Of Vibration Problems In Small Diameter Piping Branch Connections 

      Simons, Sarah; Fierro, Francisco; White, Benjamin (Texas A&M University. Turbomachinery Laboratories, 2016)
      Pump piping systems typically have small diameter branch connections that can develop vibration related fatigue failures due to mechanical excitation. Many installations do not take time to design small diameter piping to ...
    • Asynchronous Motor - Failure of Rotor Lamination Teeth 

      Coudray, Xavier; Delhaye, Guillaume; Velly, Nicolas; Quoix, Bernard; Gelin, Alain; Lucas, Antoine (Texas A&M University. Turbomachinery Laboratories, 2016)
      During full load testing of moto-compressor, abnormal vibration were detected. Failure was observed on electrical motor rotor lamination teeth. Deep experimental analysis and metallurgical investigations revealed a high ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Continuous Control of Lube Oil Water Contamination - Never get Surprised Again 

      Locke, Steve (Texas A&M University. Turbomachinery Laboratories, 2016)
      Problem: High water contamination of lube oil damaged a turbine driven process blower on multiple occasions. Traditional solution:• Monitor oil for milky appearance – only qualitative • Drain free water from reservoir, but ...
    • Coupling Guard Temperature And Windage Power Loss: Cfd Analysis And Experiments 

      Thompson, Adam; Zhai, Tianbo; Palazzolo, Alan; Keshmiri, Amir (Texas A&M University. Turbomachinery Laboratories, 2016)
      High temperatures inside coupling guards can cause machinery down time and loss of revenue. As a result, many industries invest significant time and effort trying to reduce heat generation. Windage flanges are a standard ...
    • Development Of Fuel-Flexible Gas Turbine Combustor 

      Asai, Tomohiro; Miura, Keisuke; Akiyama, Yasuhiro; Karishuku, Mitsuhiro; Yunoki, Keita; Dodo, Satoshi; Horii, Nobuyuki (Texas A&M University. Turbomachinery Laboratories, 2016)
      Growing global energy demands are motivating the gas turbine industry to seek fuel-flexible gas turbines capable of burning a wide variety of fuels as a means of increasing energy supply stability and security. These ...