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Determination of the Optimal Operating Parameters for the Jefferson Lab's Cryogenic Cold Compressor System [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 2004.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
1,960 Kilobytes pages : digital, PDF file
Additional Creators
Thomas Jefferson National Accelerator Facility (U.S.), United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Jefferson Lab's (JLab) Continuous Electron Beam Accelerator Facility (CEBAF) and Free Electron Laser (FEL) are supported by 2 K helium refrigerator known as the Central Helium Liquefier (CHL), which maintains a constant low vapor pressure over the accelerators' large liquid helium inventory with a five-stage centrifugal compressor train. The cold compressor train operates with constrained discharge pressure and can be varied over a range of suction pressures and mass flows to meet the operational requirements of the two accelerators. Using data from commissioning and routine operations of the cold compressor system, the presented procedure predicts an operating point for each cold compressor such that maximum efficiency is attained for the overall cold compressor system for a given combination of mass flow and vapor pressure. The procedure predicts expected efficiency of the system and relative compressors speeds for operating vapor pressures from 4 to 2.5 kPa (corresponds to overall pressure ratios of 29 to 56) and flow rates of 135 g/s to 250 g/s. The results of the predictions are verified by test for a few operating conditions of mass flows and vapor pressures.
Report Numbers
E 1.99:jlab-acc-03-14
E 1.99: doe/er/40150-2896
doe/er/40150-2896
jlab-acc-03-14
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Note
Published through SciTech Connect.
06/01/2004.
"jlab-acc-03-14"
" doe/er/40150-2896"
2003 Cryogenic Engineering Conference (CEC) And Cryogenic Materials Conference (ICMC), Anchorage, AK (US), 09/23/2003--09/26/2003.
Venkatarao Ganni; Joe Wilson; Dana Arenius; Jonathan Creel.
Funding Information
AC05-84ER40150
View MARC record | catkey: 14073184