Results 251 to 260 of about 143,065 (295)

Gas centrifugation of research isotopes

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1989
Abstract The use of the gas centrifugation process now makes it possible to produce isotopes of several elements in kilogram quantities.
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Centrifugal Gas Specific Gravity Meter

Journal of Scientific Instruments, 1945
When a tube containing a gas is rotated about one end a measurable pressure difference, depending upon the length of the tube, the rate of rotation and the density of the gas, is set up between its ends. The instrument utilizes this principle to compare the densities of gases.
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Gas Dynamic Designs of Centrifugal Compressors for Gas Industry

ASME 2015 Gas Turbine India Conference, 2015
Centrifugal compressors for gas industry consume huge amount of energy. As a rule, they are single-shaft, with two or more stages and with comparatively low pressure ratio. Compressors operate at low Mach numbers and high Reynolds numbers. Two design parameters influence mostly stage performances.
Y. Galerkin, A. Rekstin, K. Soldatova, A. Drozdov   +3 more
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Laser and gas centrifuge enrichment

AIP Conference Proceedings, 2014
Principles of uranium isotope enrichment using various laser and gas centrifuge techniques are briefly discussed. Examples on production of high enriched uranium are given. Concerns regarding the possibility of using low end technologies to produce weapons grade uranium are explained. Based on current assessments commercial enrichment services are able
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Manufacture of centrifugal natural gas compressors

Welding International, 2012
Experience with the manufacture of casings of centrifugal compressors with compression-welded branches of 10GN2MFA and 15Kh2NMFA heat-resisting steels using two variants of preheating and heat treatment is described.
S. I. Bashkirov, A. B. Kamenskikh, A. S. Yazev   +2 more
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Online adaptation of performance maps for centrifugal gas compressors

2014 European Control Conference (ECC), 2014
This paper investigates the adaptation of different performance maps of centrifugal compressors driven by dualshaft gas turbines during operation. First the estimation of compressor, gas turbine and combined efficiency are considered. Obtaining performance maps is mainly based on fitting an empirical model to the history of past data together with the ...
Cortinovis A., M. Zovadelli, M. Mercangoz, D. Pareschi, A. De Marco, BITTANTI, SERGIO   +5 more
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Critique of “Centrifugal Gas Compression Cycle”

AIP Conference Proceedings, 2002
In a paper in this volume, “Centrifugal Gas Compression Cycle,” a thermodynamic cycle is introduced that the author claims will convert heat from a reservoir at fixed temperature entirely into work. His analysis suffers from a fatal flaw that invalidates his conclusion, namely, a failure to correctly account for the work and heat flux involved in an ...
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Particle Trajectories in a Gas Centrifuge

Journal of Basic Engineering, 1961
The motion of spherical particles injected into a cylinder of gas which rotates as a solid body has been studied. The particle trajectory is expressed explicitly as a function of two dimensionless parameters; an injection-velocity parameter and an inertial parameter which is roughly the ratio of centrifugal force to drag force on the particle. The main
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Isotope firm buys DOE gas centrifuges

Chemical & Engineering News Archive, 1987
About 1400 gas centrifuge machines that the Department of Energy had planned on using to enrich uranium may finally be put to use. But not to enrich uranium. Instead, All Chemical Isotope Enrichment, a newly formed company based in Oak Ridge, Tenn., and which calls itself AlChemIE, is in the process of buying at least 250, and possibly all, of DOE's ...
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AIRCRAFT GAS TURBINES with CENTRIFUGAL COMPRESSORS

SAE Technical Paper Series, 1946
<div class="htmlview paragraph"><b>A</b>LONG with further improvements in the form of increased flow and pressure ratio for gas turbines with centrifugal compressors, the author looks forward to an improvement in efficiency, this latter factor being more important in gas turbines than in aircraft turbosuperchargers.</div> < ...
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