Now showing items 1058-1077 of 2440

    • Gilch, Bernhard; Droescher, Peter; Gassmann, Simon; Inforsati, Marcelo (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      The paper describes a totally re-engineered mechanical seal for multiphase subsea pumps with a focus on extended metal and seal face material selection as well as more stable seal behavior, achieved with a new face concept, ...
    • Ladd, John; Hermonat, Bruce; Brandl, Andreas (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Piston ring leakage on reciprocating compressors is predictable due to defined leakage paths at the end gaps of piston rings. A new engineering approach quantifies the slippage and determines the dynamic pressure difference ...
    • Teramoto, Makoto; Katayama, Kazuso,; Fujimuru, Masanori (Texas A&M University. Gas Turbine Laboratories, 1978)
      This paper gives a brief description of compressor-driving steam turbines for use in chemical plants. Turbines used for ethylene plants, ammonia plants and LNG plants, in particular, are large-capacity, high-speed ...
    • Riché, Chris (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2013)
      As the pressure in older oil wells decrease over time, water injection services are becoming more prevalent on offshore platforms. Water injection is used to maintain the pressure in the wells and displace the oil from the ...
    • Ehrich, Robert (Texas A&M University. Gas Turbine Laboratories, 1980)
      The paper describes elastic balancing procedures and experimental results for turbomachine rotors. The commonly known criteria of static and dynamic balancing no longer apply in this case. The rotating elements are balanced ...
    • Wattner, K. W. (Texas A&M University. Gas Turbine Laboratories, 1975)
      This paper deals with the design functions and case histories of gear couplings. A brief discussion of the various basic design features of gear couplings and their lubrication system is presented. This is followed by ...
    • Rama, John C.; Griggs, Miles (Texas A&M University. Turbomachinery Laboratories, 1997)
      Worldwide, current technology has opened a wide range of new applications for electric motors, many of which have traditionally employed mechanical (turbine) drivers. While the use of electric motors for these high speed ...
    • Partridge, James R. (Texas A&M University. Gas Turbine Laboratories, 1977)
      High speed gear drives can be reliable if all the factors influencing their design, application, and operation are considered during the design stages. This paper will discuss the parameters used by gear engineers and the ...
    • Herbage, B. S. (Texas A&M University. Gas Turbine Laboratories, 1972)
      There are many approaches to the design of thrust and journal hearings for high speed turbomachinery, ranging from the simplest flat thrust bearings and plain journal hearings to the very sophisticated multiwedge designs ...
    • Beer, Paul; Tessaro, John E.; Eckels, Brian; Gaberson, Paul (Texas A&M University. Turbomachinery Laboratories, 2006)
      Past industrial gas compressor application have utilized existing technology to achieve high rotational shaft speeds. Direct drive high-speed gas turbines or a slow-speed electric motor coupled with a speed increasing ...
    • Safwani, Ali H. Al; Dechoudhury, Pranabesh; Garvey, Martin; Farabaugh, Chet (Texas A&M University. Turbomachinery Laboratories, 1998)
      This paper is a discussion of the design, manufacture, test, and field operation of a totally oil-free string of rotating equipment. The turbomachinery string consists of a multistage centrifugal compressor driven by a ...
    • Haarmann, Svenja; Mohr, Byron (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      As an energy source, hydrogen has been a topic of discussion for some time. To support future energy demands, efficient means ofhydrogen compression will be required. Centrifugal compression may play a larger role in a ...
    • Bernstein, Henry L. (Texas A&M University. Turbomachinery Laboratories, 1999)
      High temperature coatings are used for protecting the high temperature turbine components from environmental attack due to oxidation and hot corrosion. These coatings have developed from simple aluminide coatings to complex ...
    • McManus, Robert F.; Butler, Brian M. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, 2022)
      Non-contacting dual pressurized gas lubricated seals for use in pumps have been in service since the early 1990’s. The application of these seal designs has expanded over time into very high temperature applications up to ...
    • Parker, David B. (Texas A&M University. Turbomachinery Laboratories, 1998)
      High temperature applications present many engineering problems. Thermal growth of piping and vessels, coupled with typically lower viscosities at high temperature, has made centerline mounted centrifugal pumps the primary ...
    • Gamarra, Juan; Barksdale, Jody; Oquendo, Juan R.; Ferras, Jack; Hennessy, James (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 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 ...
    • Yu, John; Zhou, Tony Wei; Lin, Haibo; Wang, Carl Feng; Peton, Nicolas (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      This presentation provides a case study how to correctly deal with increased vibration on a steam turbine that drives a compressor. After the machine had not operated for a week, vibration level increased 5 times during ...
    • Baldassarre, Leonardo; Bernocchi, Andrea; Fontana, Michele; Al-Alshaikh, Tariq H.; Alamer, Ahmad; Alharbi, Wesam; Musalami, Falah (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      A sudden increase of casing vibration along with loud noise and shaking of casing and process piping were observed on a large sales gas centrifugal compressor, while the rotor vibration was below alarm level. When the unit ...
    • Kumar, Arun (Texas A&M University. Turbomachinery Laboratories, 2006)
      Objective: To share with users of Turbomachinery the fact that High Speed Turbomachinery with components possessing Residual Magnetism produces high shaft voltages & high current, which can lead to severe problem like high ...
    • Kumar, Arun (Texas A&M University. Turbomachinery Laboratories, 2007)
      Objective: To share with users of Turbomachinery the fact that High Speed Turbomachinery with components possessing Residual Magnetism can produce high shaft voltages & high current, which can lead to severe problem like ...