Now showing items 1128-1147 of 2440

    • Hirt, Manfred (Texas A&M University. Turbomachinery Laboratories, 1984)
      The petrochemical and utility industries are experiencing a growing demand for high power turbogear units for use in large gas turbine compressor and generator drives. A growing number of high speed gears with ratings up ...
    • Ibrahim, Mohammad (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      This is a case study for a chronic waste water unit pumps failures. The impact of the failures were severe due to the significant cost of maintenance (130K USD on average) which was taking place twice a year. The pump ...
    • Wachel, J. C.; Atkins, Kenneth E.; Tison, James D. (Texas A&M University. Turbomachinery Laboratories, 1995)
      Rotordynamic design audits of machinery and systems can be used to identify potential problems before manufacture, thus preventing costly project delays and downtime. Machinery engineers need to understand the types of ...
    • Pastrana, Ryan M.; Wolfe, Christopher E.; Turnquist, Norman A.; Burnett, Mark E. (Texas A&M University. Turbomachinery Laboratories, 2001)
      Brush seal designs offer improved leakage control over conventional labyrinth seals by applying a compliant bristle with very tight clearance over the rotating shaft. Originally developed for the aircraft engine industry, ...
    • Srinivasan, Anand; Fowler, Edward J.; Marechale, Russell K. (Texas A & M University. Libraries; Texas A & M University. Libraries, 2022)
      Axial thrust load predictions are an important aspect when it comes to predicting the performance of centrifugal compressors. The accurate prediction of axial thrust forces is necessary to size the appropriate balance ...
    • Key, William E.; Grace, Ronald L.; Lavelle, Kenneth E.; Young, Lionel A.; Wang, George; Holman, Al (Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
      An Inconel 718 metal bellows seal has been developed to meet the demands for high temperature applications in corrosive media such as high Sulphur bearing crude oil. Finite element analysis was used to develop concepts ...
    • Gill, Richard S.; Osaki, Hiroaki; Mouri, Yasushi; Kawashima, Yasuhiro (Texas A&M University. Turbomachinery Laboratories, 1999)
      Centrifugal compressors handling high pressure and high density gas can sometimes encounter trouble such as rotor instability and impeller resonance vibration while in operation. In order to eliminate these problems, ...
    • Cicatelli, Giancarlo; Schiavello, Bruno (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, 2022)
      In the modern pump industry, processed fluids are characterized by a wide spectrum of viscosity values. An unpredicted variation of actual process fluid properties, including viscosity, may lead to unexpected pump performance ...
    • Winterhoff, Dale; Winterhoff, DJ (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Extreme thermal piping displacements were thought to be the root cause for the observed failures at a large refinery, namely 9 mechanical seal failures in 3 months. Optical Metrology methods were used to identify failure ...
    • Miyake, Yoshio; Kawabata, Junya (Texas A&M University. Turbomachinery Laboratories, 2009)
      Silicon carbide (SiC) is known for its superior abrasion resistance, and is widely used in pumps as a material for water-lubricated sliding bearings. Ultra pure water (UPW), with a specific resistance of greater than 10 ...
    • Rehmann, Chris (Texas A&M University. Turbomachinery Laboratories, 2005)
      As many as 91 percent of all rolling element bearings fail to achieve their calculated theoretical lifetimes. One of the primary reasons for this failure is contamination of the lubricants. Past practice for protecting ...
    • Monroe, Robert C. (Texas A&M University. Gas Turbine Laboratories, 1978)
      After a look at the problem for air cooled heat exchangers and cooling towers using axial fans, ways to improve system efficiencies in three areas are discussed: before the fin system design is finalized, improvements in ...
    • Nicholas, John C.; Whalen, John K.; Franklin, Sean D. (Texas A&M University. Turbomachinery Laboratories, 1986)
      The importance of including flexible supports in rotordynamic analyses is discussed. Various methods of including the support in rotordynamic calculations are reviewed. A method is described in which actual compliance ...
    • Galeotti, Daniele; Ramlakhan, DaveWeyermann, Hans; Broadway, Paul; Baldassarre, Antonio; Baldassarre, Leonardo (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2017)
    • Litton, Bill; DePaolis, David; Bruck, Morg; Burton, Aaron (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Mechanical/Metallurgical design requirements for pump components Design and installation for pump baseplates Proper hydraulic fit of pumps Mechanical alignment targets/procedures Pump repair criteria
    • Joseph II, John; Litton, Bill; DePaolis, David; Bruck, Morg (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2017)
    • Nissler, Karl H. (Texas A&M University. Turbomachinery Laboratories, 1988)
      Retrofits on compressors can become attractive if the operating requirements of a plant change. Often, compressor modifications are imposed by process changes due to market demands or new process technologies. Sometimes, ...
    • Silvaggio, Joseph; Smith, Carolyn (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2013)
    • Kamin, Robert P (Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1990)
      A number of single stage overhung and multistage horizontal pumps with a history of dry running seizure have been modified by replacing the metal stationary wear parts with metal filled graphite. After modification, the ...
    • Zanini, Peter; Kim, Jongsoo; Sandridge, Jeff; Gilmore, Billy, Jr. (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      This case study examines four different applications where brush seals were introduced into the gland boxes of process steam turbines where conventional carbon rings and mechanical seals were previously applied. The resulting ...