Now showing items 1-19 of 19

    • Mruk, Gerald K. (Texas A&M University. Gas Turbine Laboratories, 1978)
      Synchronous machines produce an oscillating torque at twice slip frequency on starting. If the shaft system of a coupled compressor is not adequately designed, or if the motor malfunctions, this torsional excitation will ...
    • Kaneki, Tadashi; Yokoyama, Eiji (Texas A&M University. Gas Turbine Laboratories, 1978)
      Centrifugal compressors used in various plants come in diverse specifications with regard to capacity, pressure and gas handled. In designing such compressors, important considerations are to shorten design time and save ...
    • Sohre, John S.; Nippes, Paul L. (Texas A&M University. Gas Turbine Laboratories, 1978)
      A high percentage of large, high-speed compressor trains has suffered serious failures which were initiated by shaft current damage. These currents are generated by electromagnetic effects. The basic mechanics of various ...
    • 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 ...
    • 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 ...
    • Sparmann, Rolf (Texas A&M University. Gas Turbine Laboratories, 1978)
      With turbine rotors of low shaft elasticity (large diameter and small bearing span) the increase in amplitude at the first point of shaft resonance in the speed range is generally slight. Consequently no particular attention ...
    • Wilcox, Fredrick B. (Texas A&M University. Gas Turbine Laboratories, 1978)
      A lubrication system for turbomachinery of significant size generally consists of a reservoir, pump, filter, cooler, piping and controls. Experience through the years has indicated design criteria required to minimize ...
    • Pahl, Gerhard T. (Texas A&M University. Gas Turbine Laboratories, 1978)
      This paper describes in condensed form the results of a research project initiated by the Forschungskuratorium Maschinenbau e. V. and carried out at the Institut fur Maschinenelemente und Konstruktionslehre of Darmstadt ...
    • Enz, Walter E.; Hausemann, Alfred (Texas A&M University. Gas Turbine Laboratories, 1978)
      The reliability of a steam turboset is dependent, among other things, on correct functioning of its hydraulic lubrication and control system. An essential requirement is a reliable oil supply over the whole operating range. ...
    • Houghton, John D. (Texas A&M University. Gas Turbine Laboratories, 1978)
      The paper covers the subject of overhauling turbomachines with particular emphasis on practical field procedures and proven concepts. It does not dwell on one type of machine, but multi-stage centrifugal compressors and ...
    • Clapp, Allen M. (Texas A&M University. Gas Turbine Laboratories, 1978)
      The correct lubrication of plant equipment is an important factor in sustaining production with reduced equipment outage and lower maintenance costs. A well planned and coordinated lubrication program is a necessary ...
    • Bulanowski, Edward A. (Texas A&M University. Gas Turbine Laboratories, 1978)
      The increasing availability of high speed balancing facilities requires the manufacturer and/or ultimate user to seriously consider a rates speed rotor balance. In addition, the development of the "influence coefficient" ...
    • Buck, Gordon S. (Texas A&M University. Gas Turbine Laboratories, 1978)
      The mechanical seal is the least reliable component in centrifugal pumps. Most seals fail prematurely, i.e., before the seal face wears out. One cause of premature failure is face instability when the seal geometric balance ...
    • Pennink, Hans (Texas A&M University. Gas Turbine Laboratories, 1978)
      Advances in 3-D finite element stress analysis, as well as powerful analytical technique in rotor dynamics and bearing analysis using high speed digital computers, have created the environment to build process centrifugal ...
    • Corley, James E. (Texas A&M University. Gas Turbine Laboratories, 1978)
      In 1973 Aramco embarked on a large water flood projects for the Ghawar oil reservoir. After approximately 1 year in service three of the 16 X 16 X 20 2-stage DVMF pumps developed a severe shaft vibration of over 20 mils ...
    • Turbomachinery Symposium (7th : 1978) (Texas A&M University. Gas Turbine Laboratories, 1978)
    • Szenasi, Fred R.; Von Mimitz, Walter W. (Texas A&M University. Gas Turbine Laboratories, 1978)
      This paper discusses the philosophy of optimum location of torsional critical speeds which will be excited by the transient startup, as well as methods of adjusting the resonant frequencies. Pulsating torque, average torque, ...
    • Brown, Royce N. (Texas A&M University. Gas Turbine Laboratories, 1978)
      Even an apparently well-designed lube and seal system can and will cause turbomachinery problems to occur if all operating parameters are not considered in the design of the lube and seal system. Lube and seal system design, ...
    • Bloch, Heinz P.; Finley, Robert W. (Texas A&M University. Gas Turbine Laboratories, 1978)
      Acoustic emission is the release of high frequency sound energy in a material under strain. It is the result of microscopic changes in material structure and is associated with deformation and defect growth. Until about ...