Cold Facts Digital – Page 63 – The go-to place for Cryogenics and Superconductivity

ASTA generates broad interest at users’ meeting

A crowd of researchers from government labs, academia and industry gathered at Fermilab July 23-24 for the first-ever users' meeting for the Advanced Superconducting Test Accelerator, which produced its first electrons in late June. The primary goal of ASTA is to provide a home for accelerator R&D, specifically in the...

Scientists Discover Hidden Magnetic Waves in High-Temperature Superconductors

Scientists at the US Department of Energy's (DOE) Brookhaven National Laboratory and other collaborating institutions have discovered a surprising twist in the magnetic properties of high-temperature superconductors (HTS), challenging some of the leading theories. In a new study, published online in the journal Nature Materials on August 4, scientists found...

US Dept. of Energy approves Lake Charles LNG non-FTA export application

The Department of Energy has conditionally authorized Lake Charles Exports to export domestically produced liquefied natural gas (LNG) to countries that do not have a Free Trade Agreement (FTA) with the United States from the company's terminal in Lake Charles, Louisiana.

Former SSC site now revitalized facility

Twenty years after the closing of the former Superconducting Super Collider, it is now a revitalized facility renovated by Waxahachie chemical manufacturer Magnablend. The Ellis County site improvements were highlighted in a tour the company hosted for US Rep. Joe Barton (R-TX), who was instrumental in bringing the SSC facility...

IARPA releases solicitation for SC research in high-performance computing

US government researchers are asking industry to develop a small computer based on superconducting logic and cryogenic memory that is energy-efficient, scalable, and able to solve interesting problems—particularly those that involve intelligence gathering and analysis.

NIST seeks proposals to establish new center of excellence on advanced materials research

The National Institute of Standards and Technology (NIST) has announced a competition to create an Advanced Materials Center of Excellence to foster interdisciplinary collaborations between NIST researchers and scientists and engineers from academia and industry. The new center will focus on accelerating the discovery and development of advanced materials through...

Latest in Defining Cryogenics

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....

Latest in Cryo Central

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...

Latest in Ask the Experts

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?

Using nitrogen as a cryogen

Is it possible to achieve -200˚C using nitrogen as a cryogen?

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