ICEC25/ICMC2014 Held at University of Twente, the Netherlands
The 25th International Cryogenic Engineering Conference and International Cryogenic Materials Conference took place July 7-11 at the University of Twente, Enschede, the Netherlands.
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The 18th International Cryocooler Conference
The 18th International Cryocooler Conference was held June 9-12 in Syracuse NY at the beautiful Syracuse University campus. Conference Chairman Rich Dausman and Co-chairman Dr. Chao Wang, both of Cryomech, Inc., hosted 161 attendees, including 11 students and six retirees, representing 14 different countries.
The Future with Cryogenic Fluid Dynamics
The applications of cryogenic systems have expanded over the past 50 years into many areas of our lives. This article will discuss the likely impact of cryogenic fluid dynamics on future cryogenic systems, and hopefully inspire further research to support and expand the use of existing findings and to improve...
Discovery of Helium in Natural Gas: A Retrospective
A very interesting insight into the evolution of helium production and personal insights into the life and contributions of H. P. Cady was presented by his grandson, Dr. Ralph Cady Longsworth, retired from APD Cryogenics, in a paper entitled “100th anniversary of the discovery of helium in natural gas,” presented...
Young Faces: The Next Generation in Cryogenics, Part II
In our last issue, we debuted our third installment of Young Faces, featuring young professionals who are doing interesting things in cryogenics and superconductivity and who show promise of making a difference in their fields. Here is Part II of that story, with responses listed in order of receipt.
Superfluid Helium in Space
Many scientific observations must be done in space at cryogenic temperatures a few millidegrees to a few degrees above absolute zero (-273°C). These include observations of the behavior of superfluid helium in space and observations with instruments and millimeter-wave telescopes operating at liquid helium temperatures.
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Dewar
A dewar is a type of cryostat named after Sir James Dewar, the researcher who first developed the concept of a vacuum insulated container with silvered walls to reflect thermal radiation. Dewar was the first to liquefy hydrogen, and he created the device to store his discovery. The thermos bottle...
Stirling and Gifford-McMahon Cryocoolers
Stirling and Gifford-McMahon (GM) cryocoolers are two of the most commonly used cryocoolers in cryogenics. Both devices have a significant industrial base and operate at a wide range of temperatures and capacities. The thermodynamic cycles for both of these cryocoolers are quite similar. The Stirling cycle consists of a compressor,...
Liquefied Natural Gas (LNG)
A significant commercial application of cryogenics is the liquefaction, transport and storage of natural gas. Liquefied Natural Gas (LNG) is generally 95 percent methane with a few percent ethane and much lower concentrations of propane and butane. LNG liquefies at 111.6 K. Unlike many applications of cryogenics, the motivation for...
Food Processing
Cryogenics and Food The industrial gas industry provides a host of products and services related to food. The various gases have useful and sometimes fascinating applications in food industry. “The food industry is not a homogenous industry. The needs of customers processing hamburger vs. poultry vs. strawberries vs. seafood, for...
Primary Standards
Elie K. Track Hypres, Inc. elie@hypres.com http://www.hypres.com/ Primary standards involve the exact definition and realization of units of measurement for various quantities, time, length, mass, voltage, resistance, current, etc. International agreements based on the latest scientific knowledge define those units, and their realizations vary depending on the unit itself. For...
Shrink Fitting
Robin A. Rhodes Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Shrink fitting, (or “compression fitting” as it is sometimes called), is a method used to insert a pin or bushing into a housing or other assembly requiring an extremely tight tolerance fit. It can be used as an alternative to...
Telecommunications
From the Winter 2004 issue of Cold Facts magazine The recent M-Calc IV — 4th Industry Assessment workshop discussing military and commercial applications for low-cost cryocoolers, held in November in San Diego, highlighted progress being made in cryogenics as applied in telecommunications. The reliability and long lifetime of projects now...
Need help comparing chest freezers and upright freezers
Currently we use in our Biobank an upright -80 freezer to store all our samples. We are planning to buy a fully automated bio-repository storage that will do the picking of samples under restricted conditions. But in the meantime I foresee that we have to pick the samples manually. The...
Need recommendations for cryogenic vials
I am looking into standardizing our range of bio storage tubes (cryogenic vials). These will be for both blood and tissue samples and their derivatives. Any recommendations, comments on Micronics, Nalgene, Nunc and or others that are suitable for long term -80 C and -196 C storage, DNA/RNA suitable, would...
We need a custom machine for flash freezing of water
We are an ice making company and have started a new project, which is related to flash freezing of water. It is based on cryogenics technology and we need a custom made machine. I would kindly ask you to pass me a few companies who would be interested in such...
Looking for a pump suitable for cold liquids
I would like to construct a small cooling circuit (appr. 50 x 50 cm) pumping liquid at a temperature down to -120°C from a cold reservoir to the specimen to be cooled. The tubes and connections are not a problem, but does somebody know a pump (suction/compression for circulation) suitable...