Air Products increases prices for liquid and bulk helium gases in North America
Effective September 1, 2011, or as contracts permit, Air Products will be implementing a price increase of 15 percent for liquid and bulk helium gases in North America.
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NASA awards grants to improve STEM programs
NASA has awarded grants to four universities and their partner institutions that serve large numbers of minority and underrepresented students to strengthen programs in science, technology, engineering and mathematics (STEM).
Silicon Valley pioneer M. Kenneth Oshman dies
Silicon Valley pioneer M. Kenneth Oshman died August 6. He was 71.
Reflect Scientific, Inc. debuts new websites
Reflect Scientific, Inc., a provider of diverse products and services for the biotechnology, pharmaceutical and transportation industries launched several new websites that showcase the company’s product offerings.
Wood appointed AMSC chairman of the Board
American Superconductor Corporation has announced the appointment of John W. Wood Jr. as chairman of the Board, effective August 16. He replaces former chairman and company founder, Gregory J. Yurek, who retired as chief executive officer earlier this year.
ATLAS and CMS narrow the mass region of the Higgs
Two experimental collaborations at the Large Hadron Collider announced that they have significantly narrowed the mass region in which the Higgs boson could be hiding.
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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...
In need of books to start a cryogenic engineering department
My company is going to create a cryogenic engineering department and we need some books in order to facilitate this project. This is the kind of information we would like to obtain from the books: 1- Calculations for determining the storage facilities, such as storage tanks, pumps, compressors, etc. 2-...
Having some difficulty with the design of a cryogenic pressure vessel
I am a graduate student in the Dept. of Mechanical Engineering at West Virginia University. As a part of my research, I’m doing a case study of design of a Cryogenic Pressure Vessel. I’m facing a little difficulty in the process, and would be very grateful to you if you...
What's the difference between a cryocooler and a cryostat?
What’s the difference between a cryocooler and a cryostat?