Browsing Category Designing
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Compressors
Better design for less noise in compressors
This article applies to centrifugal and axial compressors. Reciprocating, screw, and scroll compressors and ejectors have different considerations. For “dynamic” radial or axial gas compressors the predominant noise ...
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Designing
Redesign of a steam turbine with unknown boundary conditions
Several levels of overhaul are possible depending on time and money resources. When both are at a minimum, the redesign of one or several stages of aging turbomachinery ...
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Auxiliaries
How inert gas service helps overcome seal oil leakage
The entrance of oil through the oil seals into refrigeration systems will reduce the capacity of the system and impact on process unit revenue. To ensure that seal ...
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Company News
ADT to unveil new design optimization methods at ASME Turbo Expo 2014
Advanced Design Technology, Ltd. (ADT), developer of advanced turbomachinery design methods, is planning to demonstrate the TURBOdesign Suite and its three-dimensional (3D) inverse design optimization capabilities for superior ...
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Designing
Tuned and Mistuned Long Turbine Blade Resonant Response
“Interference Diagrams” also termed by some as “Safe Diagrams” are utilized for fully-coupled rotating blades. In Reference No. 1 resonance where harmonic of speed is equal to nodal ...
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Compressors
Design Supercritical CO2 Power Plants
The supercritical CO2 power cycle is one of the most promising power technologies. It is not by chance though, because carbon dioxide (CO2) has a unique combination of ...
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Compressors
Verify that blade packet mode resonance is safe
There are many steam turbine rotor stages with blades connected together for added reliability, making them much more difficult to excite from alternating forces such as upstream vane ...
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Compressors
Can High Noise Levels Cause Fatigue Of Covered Impellers?
As shown in previous articles it is stationary vane numbers that can cause significant interaction resonance of disk modes. Direct pressure loads at rotating blade passing frequency and ...
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Compressors
Disk Resonance Equations & Interference Diagrams
A 2-diameter mode shape for a covered impeller is shown below. Two areas vibrate in phase while two other areas are simultaneously out-of-phase. Excitation forces such as from ...
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