Browsing Turbomachinery and Pump Symposia by Title
Now showing items 1426-1445 of 2440
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(Texas A&M University. Turbomachinery Laboratories, 1987)At the end of the forties, the integrally geared centrifugal compressor was developed and initially used for air, and later for nitrogen and other gases. To date, about 10,000 units are in use working in the capacity range ...
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(Texas A&M University. Turbomachinery Laboratories, 2004)To compete in today’s economic climate, petrochemical plants are strategizing on continuous long-term operation to reduce maintenance costs and increase productivity. This strategy has led some plants to go from eight years ...
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(Texas A&M University. Turbomachinery Laboratories, 2002)Recently, synthesis gas compressor drive steam turbines have required upgrading to increase efficiency and reliability for saving both operation and maintenance costs in many ammonia plants. This paper introduces the latest ...
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(Texas A&M University. Gas Turbine Laboratories, 1972)This paper presents a cursory review of some of the recent work that has been done in turbine aerodynamic research at NASA-Lewis Research Center. Topics discussed include the aerodynamic effect of turbine coolant, high ...
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(Texas A&M University. Turbomachinery Laboratories, 1991)The new design technology of the mechanical drive steam turbines used in the chemical plant industry is presented. In order to improve the performance of high speed turbines, the new high pressure ratio impulse stage has ...
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(Texas A&M University. Turbomachinery Laboratories, 2005)The combination of a 16 inch Pitot tube pump with a switched reluctance motor represents a significant development in the field of high-pressure pumping. A field proven Pitot tube pump design has been mechanically integrated ...
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(Texas A&M University. Gas Turbine Laboratories, 1979)This paper presents the development and analysis of new critical speed criteria. The critical speed has been defined as the resonant speed of the rotor bearing system at which large response amplitudes can occur. However, ...
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Next Generation Pump Systems Enable New Opportunities For Asset Management And Economic Optimization (Texas A&M University. Turbomachinery Laboratories, 2002)There is growing interest in cost-effective techniques that can detect the earliest stage of degradation or malfunction and predict machinery failure. New diagnostic and prognostic techniques may be effectively coupled ...
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(Texas A&M University. Turbomachinery Laboratories, 2012)
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(Texas A&M University. Turbomachinery Laboratories, 2007)This Paper describes design, fabrication, installation and operational experience with non-metallic brush seals installed in all four GT Units, GE-made, Frame No 7, model EA, presently operating at Watson Cogeneration ...
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(Texas A&M University. Turbomachinery Laboratories, 1988)Nondestructive evaluation is becoming increasingly important in determining the quality of materials and fabrications used in the manufacture and maintenance of rotating machinery. NDE has long been used as a tool for ...
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(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)Measurement of the modal parameters of rotors is of interest to understand the dynamics of rotating systems, validate design models, and assess how operational parameters affect the vibration response. Torsional vibratory ...
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(Texas A&M University. Turbomachinery Laboratories, 2010)Continuous improvements in the power rating and switching characteristics of power semiconductor devices have enabled the use of power electronics converters in high power variable speed drives (VSDs). These multimegawatt ...
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(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)This case study discusses the rerate of a set of vertically-mounted single-stage end-suction centrifugal pumps used for low pressure safety injection (LPSI) in a nuclear power plant. The original LPSI pumps were supplied ...
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(Texas A&M University. Turbomachinery Laboratories, 2001)There was a time when people worked on radiologically contaminated equipment with a low level of protection, when equipment leakage was considered unavoidable, and when contaminated equipment was disposed of with little ...
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(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)The increasing demand of higher efficiency and increased equipment compactness is pushing the modern rotordynamic design towards higher and higher bearing peripheral speeds. Due to the increased viscous dissipation, fluid ...
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(Texas A&M University. Turbomachinery Laboratories, 2001)With the increase in power per unit of volume for modern pumps, driven by manufacturing costs reduction, cavitation becomes more and more the main limiting factor in pump design. The classical one-dimensional design rules ...
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(Texas A&M University. Turbomachinery Laboratories, 2008)Pump intake is designed to provide adequate water supply to pumps. It is essential to design the pump intake to provide fairly uniform and swirl free flow to pumps. However, it is not always possible due to site constraints. ...
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(Texas A&M University. Turbomachinery Laboratories, 2002)There is a close link between the pressure pulsation in the pump working cavity and its vibration and noise level. Due to a current trend in increasing rotation speed and power, the problem of noise, vibration, and pressure ...
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(Texas A&M University. Turbomachinery Laboratories, 2007)This paper deals with pump as turbine (PAT) as a feasible solution to the energy problems in rural and hilly areas. PAT provides an economical alternative to actual turbines especially for pico and microhydropower generation. ...