Now showing items 41-60 of 8496

    • Lea, Fred (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      Sometimes when tasked with an effort that has been done many times before, the same path is followed over an over again. Sometimes the saying “Just because we have always done it that way, doesn’t mean it’s right” is very ...
    • Schmidt, John M. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      A bolted raised face Joint (with O-ring gasket) was failure prone. An axisymmetric FEA (finite element analysis) of the Joint verified why: the flanges were not stiff enough (not thick enough); too much flange rotation ...
    • Souers, Bobby (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, 2022)
      Metallurgy upgrades for high TAN crudes and existing NPSH problems required the installation of two (2) new Atmospheric Towers and two (2) new Vacuum Tower Bottoms Pumps. • The new pumps are 450 HP and 1800 rpm versus ...
    • Strachan, Martin; Severs, Peter; Sharples, Andrew; Woolsey, Clive; Vickers, Tim (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      A method has been developed that allows reasonably accurate sectional performance evaluation of sideload compressors based upon only external measurements available from the streams entering and exiting the compressor ...
    • Barbosa, Pedro Henrique de Almeida; Varella Guedes, André; Lima, Leonardo Monteiro Barbosa; Freire, Ronaldo Lucas Alkmin (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      The purpose of this work is to present the first results of a practical approach developed for measuring the performance on energy and carbon of turbomachinery installed at offshore oil production plants, based on the ...
    • Smith, Patrick J.; Whalen, John; Pavelek, Dustin (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      The primary purpose of performing a lateral rotordynamic analysis for centrifugal compressors, steam turbines and other rotating machines is to ensure that there are no undesirable rotor/bearing performance issues that ...
    • Sorokes, James M.; Kuzdzal, Mark J. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)
      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, ...
    • Sorokes, James M.; Kuzdzal, Mark J. (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      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, ...
    • Zhou, Y.; Kazantzis, N.; Mannan, M.; West, H.H.; Rogers, W.J. (Mary Kay O'Connor Process Safety Center; Texas &M University. Libraries, 2000)
      Abnormal situations are events that are outside of normal plant operating modes. It is estimated that the U. S. economy could reduce costs by $20 billion per year by avoiding abnormal situations. Modern control systems can ...
    • Schiavello, Bruno; Smith, Donald R.; Price, Stephen M. (Texas A&M University. Turbomachinery Laboratories, 2004)
      It is well documented that the proper operation of vertical centrifugal pumps is greatly dependent upon the entire pump/piping system, which includes the piping geometry and the system operating conditions. Oftentimes, ...
    • Muns, S. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2007-12)
    • Hoppock, William G.; Van Bramer, Kenneth G.; Silvaggio, Joseph A. (Texas A&M University. Turbomachinery Laboratories, 1982)
      The intent of this paper is to describe various aspects of the application of abradable seals to industrial turbomachinery. Topics covered include sealing locations, materials, comparative studies and examples of the use ...
    • Vetter, Gerhard; KieBling, Ralph; Wirth, Wolfgang (Texas A&M University. Turbomachinery Laboratories, 1996)
      The reduction of abrasive wear and extension of the endurance of pumps requires a system analysis. Various pump types demonstrate different tribological systems under abrasive wear, which are basically dominated by sliding, ...
    • Reddy, Ranga; Reddy, Ravi S. (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Case Study 15: This case study is about a typical experience where a steam turbine, which was running at 100 RPM on barring (turning) after overhaul, stopped abruptly and the rotor was found to be seized. The case study ...
    • Hufford, P. E. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 1986)
      Contrary to popular concept, in most cases, thermal energy is the real VALUE in cogeneration and not the electricity. The proper consideration of the thermal demands is equal to or more important than the electrical demands. ...
    • Erickson, D. C.; Davidson, W. F. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 1984)
      The absorption cycle offers one of the most economic and widely applicable technologies for waste heat upgrading. It can use off-the-shelf hardware that is available now, at any required capacity rating. Fractional ...
    • Davis, R. C. (Energy Systems Laboratory (http://esl.tamu.edu), 1985-05)
      The concept of a thermal powered absorption heat pump is not a new or revolutionary idea. It has been successfully demonstrated in the lab and prototypes have been installed in the field. Units have been successfully applied ...
    • Erickson, D. C.; Lutz, E. J., Jr. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 1982)
      When the heat source available to a distillation process is at a significantly higher temperature than the reboiler temperature, there is unused availability (ability to perform work) in the heat supplied to the reboiler. ...
    • Shirey, D. B. (Energy Systems Laboratory (http://esl.tamu.edu), 2008-12)
      High-efficiency home designs have significantly reduced sensible cooling loads, and some building codes and IAQ standards have begun requiring continuous outdoor ventilation air. These trends have led to an increased ...
    • Guerra, Christopher; MacWilliams, Scott; Sorokes, James; Lupkes, Kirk (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)
      This paper describes efforts undertaken to increase the use of non-metallic components in research and development as well as component/stage validation testing. The switch to non-metallic or polymer components was driven ...