CERN marks latest milestone with ceremony
A brief ceremony in Geneva on November 7, 2007 marked the latest milestone for CERN's Large Hadron Collider (LHC), the world's most powerful particle accelerator.
ADVERTISEMENT
Two scientists join Argonne’s Center for Nanoscale Materials
Two scientists, Elena Rozhkova and Elena Shevchenko, have joined Argonne National Laboratory's Center for Nanoscale Materials.
AmSC and TECO-Westinghouse announce research joint venture
American Superconductor Corporation and TECO-Westinghouse Motor Company announced the formation of a research joint venture to develop high temperature superconductor (HTS) and related technologies for high-power, direct drive wind generators for offshore wind farms.
DNV approves FIBA for Manufacturer Certificate No. T-1142
Det Norske Veritas (DNV) has granted FIBA Technologies, Inc. approval of Manufacturer Certificate No. T-1142, which approves FIBA for the manufacturing of seamless gas bottles and pressure vessels of Class I and II. FIBA is one of only four companies in the world to be granted this approval.
Carl T. Johnson nominated for Administrator of PHMSA
Carl T. Johnson, former president of The Compressed Gas Association, has been nominated by President George W. Bush to be Administrator of the Pipeline and Hazardous Materials Safety Administration at the Department of Transportation.
James Fesmire gets promoted at NASA Kennedy
CSA Technical Director James Fesmire was recently promoted to the position of Senior Principal Investigator at the NASA Kennedy Cryogenics Test Laboratory.
ADVERTISEMENT
Cold Compressors
A common way to provide cooling below the normal boiling point of helium (4.2K) is to reduce the pressure above the bath of liquid helium, thus also reducing the bath’s equilibrium saturation temperature. For example, to produce a 1.8K bath of liquid helium, the saturation pressure has to be reduced...
Kapitza Conductance
Kapitza conductance refers to the heat transfer between a solid surface and a fluid that covers that surface. Fundamentally, it describes the inherent difficulty in transferring energy from a solid to the fluid covering the solid surface. This phenomenon was first observed by P. L. Kapitza in 1941 while studying...
Thermosyphons
A thermosyphon (or thermosiphon) is a device that transfers heat via natural convection in a fluid. The natural convection is driven by gravity with the colder, denser fluid flowing downhill and the warmer, less dense fluid flowing back up. Thus, thermosyphons connect an object to be cooled with a reservoir...
Air Separation and Liquefaction
by Nils Tellier, PE, President, EPSIM Corporation (CSA CSM) nils@epsim.us All illustrations courtesy EPSIM Corporation Background History of Air Separation and Liquefaction This section builds on a rich history of methods to develop deep refrigeration and cryogenic liquefaction during the 19th Century. You are encouraged to read Cryo Central’s History...
Bose-Einstein Condensate
A Bose-Einstein condensate, first proposed in 1925 by Albert Einstein based on work done by Satyendra Nath Bose (the same Bose from whom the term boson is derived), is a super-cold state of matter in which almost all of the individual atoms have “condensed” down to the lowest possible quantum...
Cold Technology for Pest Control
While it does not reach temperatures cold enough to be called cryogenic, carbon dioxide snow is at the heart of a new way of dealing with unwanted pests. It utilizes a quick freezing process that takes advantage of the properties of carbon dioxide snow and has a number of benefits...
Cryogenic Finishing
The following 3 articles discuss the uses and procedures of various type of cryogenic finishing. 1) By Robin A. Rhodes, Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Cryogenic Deflashing is employed to remove undesired residual mold flash that remains on molded parts after they are removed or ejected from the...
Rotating shaft seal for liquid to gaseous hydrogen?
I am constructing a cryogenic generator for the Air Force. It operates at 15,000 rpm for Liquid Hydrogen. I need a rotating shaft seal that will work with liquid to gaseous hydrogen. Where can I source seals for this application?
Source to help with cryo-treating a Nickel-Aluminum-Bronze impeller?
I am a graduate student at Penn State University working on a cavitation resistance project via cryo-treating a Nickel-Aluminum-Bronze impeller.
Looking for technical papers on the effect of processing metals at liquid helium temperatures.
I am a metallurgical engineer looking for technical papers on the effect of processing metals at liquid helium temperatures. In anyone familiar with any work in this field?
Quantitative data on mechanical properties for AISI 4340 alloy steel
I have a potential client who is looking for quantitative data on mechanical properties, particularly fatigue properties, with and without cryogenic tempering at -300/-320 degrees F for AISI 4340 alloy steel. Can you point me in the right direction?