Praxair to help supply hydrogen during peak demand
An underground storage cavern integrated into Praxair's hydrogen pipeline will begin to supply hydrogen to customers during periods of planned and unplanned peak demand.
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Frozen tissue samples stored at the American Museum of Natural History
The American Museum of Natural History in New York City has been collecting and freezing tissue samples from fauna all over the world. These samples are stored in this five-year-old frozen tissue lab in vats kept below -150.
Pierre Auger Collaboration tops list of breakthrough stories for 2007
The Pierre Auger Collaboration correlation between active galactic nuclei and the highest energy rays that hit earth was on the top of the list of breakthrough stories for three national media organizations in 2007.
Aerojet completes testing of Reaction Control Engine
Aerojet has completed developmental testing of an innovative cryogenic oxygen/methane Reaction Control Engine (RCE).
ISRO begins testing cryogenic engines
The Indian Space Research Organization recently began testing cryogenic engines that were designed after the renegotiation of an agreement with Russia to purchase the engines. The engines use cryogenic fuels that are super-cooled to around -250.
EnFlow Cryogenics provides nitrogen and argon delivery alternative
EnFlow Cryogenics, available from Holox, targets Atlanta-area businesses seeking a nitrogen and argon supply delivery alternative to high pressure or liquid cylinders.
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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...
Low temperature applications of titanium and alloys
For a technical presentation I would like to have some recommendations for low temperature applications of titanium and titanium alloys. Do you think you can help me?
Designing a liquid oxygen bath
I’m designing a Liquid Oxygen Bath to place composite coupons in the bath and soak 96 samples for intervals of 8 hours, 24 hours, 7 days, 21 days, 42 days, 62 days and 90 days.
School science projects involving cryogenics and metallurgy?
Can you recommend any school science projects that would involve cryogenics and metallurgy?
Metallic Salts Normally Used to Produce Ultra-Low Temperatures?
Regarding the method known as the Adiabatic Demagnetization of Paramagnetic Salts: What metallic salts are normally used to produce the ultra-low temperatures used for near-absolute-zero cryogenic research? Which salts are the most efficient? Which make the best cooling agents? And which are used most commonly by physicists? I am looking...