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Now showing items 81-90 of 176
Centrifugal Pump Application - Key Hydraulic And Performance Criteria
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
The essential elements to be reviewed when considering a centrifugal pump application are highlighted. The purpose is to ensure the procurement and/or application of a centrifugal pump which optimizes reliability, energy ...
Design And Implementation Of A Mechanical Seal Improvement Program At An Oil Refinery
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
A mechanical seal improvement program was initiated at a major oil refinery. The program was intended to improve seal reliability, reduce emissions, improve safety, and reduce costs. A partnership agreement was reached ...
Computational Fluid Dynamical Analysis Of Complex Internal Flows In Centrifugal Pumps
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
A commercial computational fluid dynamics (CFD) computer code was employed to compute the flow field from 105 percent down to 21 percent of the 4525 gpm BEP flowrate of a 1785 rpm, 1500 specific speed impeller of 14,000 ...
A Case History - Improved Hydraulic Design Lowers Cavitation Erosion And Vibrations Of A Water Transport Pump
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1993)
In this case history, the successful application of well-known tools for hydraulic design changes and cavitation erosion prediction is presented. A description of the tools can be found in many publications and will not ...
Pressure Pulsation Dampening Methods For Reciprocating Pumps
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1993)
The safe design of piping installations for reciprocating pumps requires proper knowledge about the pump installation interaction. A compact review shows pump vibration spectra excited by the pumps and methods of numerical ...
Model Predictions And Experimental Results For The Rotordynamic Characteristics Of Leakage Flows In Centrifugal Pumps
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1993)
The role played by fluid forces in determining the rotordynamic stability and characteristics of a centrifugal pump is gaining increasing attention. The present research investigates the contributions to the rotor dynamic ...
Corrosion In Pumps And Other Damage Mechanisms
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1993)
The successful application of pumps in handling a variety of fluids depends upon knowledgeable design considerations, and the selection of the correct materials for the liquid environment. A previous tutorial “Corrosion ...
Application Of Variable Speed Electric Motors For Pumps
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1993)
Pumps operated with variable and higher speed electric motors provide numerous benefits such as greater range of flow and head, higher head from a single stage, valve elimination, and energy saving. To achieve these benefits, ...
Vibration Problems With An Electric Motor For A Centrifugal Pump Installation
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1993)
A case history is presented in which vibration related problems with two pole electric motors have delayed acceptance of the complete pump packages by the end user. Noncompliance with contract specifications led to a major ...
The Shortcomings Of Using Pump Suction Specific Speed Alone To Avoid Suction Recirculation Problems
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1993)
There is a mistaken belief in the pump industry (fueled by many publications) that the best way to avoid suction recirculation problems is to design and/or apply only pumps having low suction specific speed values (below ...