Daniel P. McGahn named AMSC President and Chief Operating Officer
American Superconductor Corporation has named Daniel P. McGahn President and Chief Operating Officer.
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Oxford Instruments wins Corporate Excellence Award
From the Oxford Instruments website: The British Chamber of Commerce in Japan (BCCJ) has announced that Oxford Instruments KK has won the prestigious Corporate Excellence category at the 2009 British Business Awards.
NHMFL breaks previous record with new magnet
The National High Magnetic Field Laboratory has broken the record for the highest-field "resistive" magnet with their recently upgraded 36-tesla magnet, which uses electricity to generate high magnetic fields.
World’s thinnest high temperature superconductor shows potential
Physicists at Brookhaven National Laboratory have created layered films of cuprate (copper-oxide) materials that allow them to localize the superconducting behavior to a single atomic plane.
Which states in the US have established RQs for liquefied nitrogen?
I’m curious to know which states in the United States have established a reportable quantity (RQ) for liquefied nitrogen, should it be unintentionally released into the atmosphere. What are the RQs for these states? Here in Massachusetts, the RQ for LN2 is 10 pounds. Mark Bennett Office of Environmental Health...
Popular culture interest in STEM growing
CERN on the The Daily Show, NASA on The Colbert Report, outreach raps for the LHC, the Tevatron and FRIB, Japanese Manga art “edutainment” for KEK, standup comedy on the helium shortage, the Australian Science Agency teaming up on a science takeoff of a Backstreet Boys’ song, hundreds of songs...
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Mixed Refrigerant Cycles
Most cryogenic refrigeration systems, both large scale systems and cryocoolers, use helium as a working fluid. There are a number of advantages to helium, not the least of which is that helium remains a fluid down to the lowest achievable temperatures. In order to freeze helium, pressures of over 20...
Fountain Pumps and He II Phase Separators
Helium II (He II), the second liquid phase of the 4He isotope described in this column in Cold Facts Spring 2010 (http://2csa.us/he2), can be modeled as consisting of two interpenetrating fluids. One, the superfluid component, has zero viscosity and entropy and the other, the normal fluid component, has nonzero viscosity...
Turboexpanders
A vital technology in the refrigerators and liquefiers described in Cold Facts Volume 31 Number 3 is that of turboexpanders. These devices are rotating machines in which the process fluid (e.g., helium) does work against the turboexpander while moving from high pressure to a lower pressure and thus is cooled....
Wind Tunnels
Dr. Robert Kilgore The development of the cryogenic wind tunnel is one of many significant breakthroughs in both cryogenics and wind-tunnel technology made during the past millennium. Interest in the development of high-speed commercial and military aircraft resulted in a review of problems of flow simulation in transonic wind tunnels...
History of Cryogenics
From the Fall 1999 issue of Cold Facts magazine Millennium Breakthroughs A variety of CSA members give different perspectives on the past millennium: What were the most significant breakthroughs in cryogenics during the past millennium? Prof. R.G. Scurlock, Kryos Technology, scurlock@soton.ac.uk (“Breakthrough” = way through obstacles — Oxford English Dictionary)...
Cryobiology
Andreas Sputtek Past President Society for Cryobiology sputtek@uke.uni-hamburg.de or http://www.sputtek.de/. The word cryobiology (from the Greek words “cryo” = cold, “bios” = life, and “logos” = science) literally signifies the science of life at low temperatures. In practice, this field comprises the study of any biological material or system (e.g.,...
Cryogenic Insulation
James E. Fesmire Cryogenics Test Laboratory NASA Kennedy Space Center james.e.fesmire@nasa.gov Introduction In today’s world, the use of cryogenics and low-temperature refrigeration is taking a more and more significant role. From the food industry, transportation, energy, and medical applications to the Space Shuttle, cryogenic liquids must be stored, handled, and...
An Issue of Pressure and Flow Rate in a Supply Tank
Please help solve this problem: A supply tank requires a vaporizer to generate sufficient pressure to pump stored fluid up into a vehicle or tank. The available head is limited as the tank level falls and it is important to minimize the system pressure drop to maintain the desired flow...
Using MLI on VJ Line Joints or Cryo Storage Tanks
When installing Multi Layer Insulation (MLI) blankets on VJ line joints or cryo storage tanks should they be wrapped and tied down tight or loose? These are usually pre-cut to size. Also should they have an access hole at the point of where the molecular sieve is installed to help...
Separated layers of ice over a pipe
I want to know that why there are different layers of ice over a pipe carrying a cryogenic fluid, each layer separated with clear marks / lines? What do these layers signify?