Two companies buy controlling interest in Acme Cryogenics
Gladstone Investment Corp., Acme Cryogenics' Senior Management Team, and Brant Point Partners bought controlling interest in Acme Cryogenics, Inc. from founder Roderic Fink.
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Praxair celebrates its 100th anniversary
Praxair, Inc. celebrated the 100th anniversary of its founding and its 15th year as a publicly-traded corporation on January 24, 2007.
Linde Hydrogen Center inaugurated in Munich-Unterschleissheim
The inauguration of the new Linde Hydrogen Center in Munich-Unterschleissheim in October marked Linde AG's commitment and support to a hydrogen economy.
Yoed Rabin leads cryosurgical research team
Carnegie Mellon University's Yoed Rabin is leading an interdisciplinary research team in developing a new computerized research tool to assist surgeons in planning cryosurgery.
NHMFL to build hybrid resistive/superconducting magnet
NHMFL has received an $11.7 million National Science Foundation grant to build an innovative, next-generation hybrid resistive/superconducting magnet that will potentially revolutionize a technique used to learn more about little-understood molecules.
Barber-Nichols celebrates its 40th anniversary
Barber-Nichols celebrated its 40th anniversary with an open house for customers, employees, vendors and alumni.
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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...
Searching for a company to make a specific kind of cryogenic chamber
I am writing a proposal to do some deep space simulations of mechanical vibrations at cryogenic temperatures. For the research, I will need to obtain a chamber that has a space of approximately 1700 cubic inches (or a 12in. cube) that also has an optical viewing window.
Cryogenic cooling as possible treatment of aluminum parts for semiconductor industry
I’m interested in cryogenic cooling as a possible treatment of aluminum parts for the semiconductor industry.
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?