Cold Facts Digital – Page 61 – The go-to place for Cryogenics and Superconductivity

Jlab to test new ALON® windows for RF accelerators

This ALON optical ceramic, manufactured by Surmet Corporation, Burlington, Massachusetts, will be evaluated as a high power RF window material to replace the current “opaque” alumina window. At Jlab, ALON’s properties, such as thermal conductivity, thermal expansion coefficient and dielectric properties, will be measured down to liquid helium temperatures.

Linde’s breakthrough spiral freezer helps high production baker maintain competitive edge

Linde Gases, a division of The Linde Group, has installed its newly launched CRYOLINE® XF (Cross Flow) cryogenic spiral freezer at one of US-based Omni Baking Company’s plants in New Jersey. This high capacity compact freezer significantly increases frozen food productivity, reduces the amount of liquid nitrogen needed in the...

Liquid nitrogen engine could be an alternative to batteries

A design for a liquid-nitrogen-powered vehicle engine could provide an alternative to batteries and fuel cells following a planned feasibility study.

AMSC announces cost reduction action

AMSC, a CSA Corporate Sustaining Member, announced that it has reduced its workforce by more than 20 percent in order to lower the company’s cash usage as it works toward a return to profitability.

Muppet scientists at the LHC

If a big family trip to the movies is one of your holiday traditions, you might soon find yourself sitting with a fat tub of buttery popcorn at a screening of The Muppets, released November 23.

SGD acquires Special Gas Supplies LLC

SGD Inc., a single source wholesale supplier of specialty gas equipment, has acquired Special Gas Supplies LLC, a supplier to compressed gas cylinder fillers of shrink wrap, tamper-proof seals, status tags, cylinder status neck ring discs, cylinder netting, lecture bottles, and lecture bottle valves, and more.

Latest in Defining Cryogenics

Stability

Stability refers to the ability of a device employing superconductors to remain in its superconducting state after part of the superconductor transitions back to its normal conducting state due to a disturbance. While the concept can apply to many superconducting devices—transmission lines, generators, motors, etc.—it is most commonly considered in...

Cable-in-Conduit Conductors

Cable-in-Conduit Conductors (CICC) are a common form of superconducting cable used in large-scale applications. There are several varieties of CICCs, but they all consist of many small, stabilized superconducting wires contained within a conduit through which a coolant (typically supercritical He II) flows. Figure 1 shows the cross section of...

Bayonet Coupling

A bayonet coupling is a demountable joint that allows for quick and easy connection and disconnection of cryogenic components, including transfer lines, cryostats, liquefiers and refrigerators. Bayonets provide a number of advantages, chief among them the ability to connect and disconnect the bayonets while components they connect are still at...

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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