Fred Edeskuty honored by South High School as outstanding alumni
Former Cold Facts columnist on Safety, Fred Edeskuty was honored by his alma mater, South High School, for being an outstanding alumni.
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URA and the University of Chicago to bid for contract
Universities Research Association, Inc. (URA) and the University of Chicago have formed a partnership to bid for the US DOE contract to manage the Fermi National Accelerator Laboratory (Fermilab), home of the Tevatron, the word's highest energy particle accelerator and a CSA corporate sustaining member.
Dr. Sidney Yuan joins The Aerospace Corporation
CSA Board Member and co-founder of the Northern and Southern California Chapters Dr. Sidney Yuan has joined The Aerospace Corporation as Engineering Specialist, a job that he is pleased will include research assignments.
Applied Superconductivity Center to move to Tallahassee FL
The Applied Superconductivity Center (ASC) will move to Tallahassee FL and become a materials research division of Florida State University's (FSU) National High Magnetic Field Laboratory (NHMFL), a CSA corporate sustaining member.
ILC receives increase in budget submitted to Congress for FY07
The International Linear Collider received a 100% increase in the Administration's budget submitted to Congress for FY 2007, from $30M to $60M.
Linde becomes world’s largest provider of industrial gases
Linde has taken over BOC in a $14.4 billion deal that makes Linde the world's largest provider of industrial gases.
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Regenerators
Regenerators or regenerative heat exchangers are a key component of cryocoolers such as pulse tube cryocoolers (Cold Facts, August 2014). Regenerator performance greatly affects the coefficient of performance of cryocoolers. Improvements in regenerator design and, in particular, regenerator materials have been an important factor in the improvement of the performance...
Pulse Tube Cryocoolers
The development of pulse tube cryocoolers has been a significant topic of research and development over the past 20 or so years. Pulse tube cryocoolers have a number of advantages over other types of cryocoolers and are now available commercially. In order to understand pulse tube cryocoolers, it’s best to...
Thermal Expansion
Thermal expansion refers to the change in size (length or volume) that a material undergoes as its temperature changes. In cryogenic systems this effect can be quite large and must be allowed for in the design. In isotropic materials, which include most engineering materials, the thermal expansion is the same...
Magnetic Levitation
From http://www.superconductors.org. Magnetic-levitation is an application where superconductors perform extremely well. Transport vehicles such as trains can be made to “float” on strong superconducting magnets, virtually eliminating friction between the train and its tracks. Not only would conventional electromagnets waste much of the electrical energy as heat, they would have...
Superconductivity
From Superpower website. History of Superconductivity Superconductivity was discovered in 1911 by the Dutch physicist, Heike Kammerlingh Onnes when he was able to liquefy helium by cooling it to 4 Kelvin, or -452°F. This enabled him to cool other materials close to absolute zero and investigate their electrical properties. He...
Medical Applications of Cryogenics
Neutron Therapy Cryogenics is at the heart of nuclear accelerators. Accelerators such as Fermilab’s Tevatron make neutron therapy for cancer possible. From Fermilab Today 4/20/09: Fermilab currently offers neutron therapy. But staff at Fermilab designed and built the proton accelerator used by the nation’s first hospital-based treatment center to use...
Nuclear Physics
Al Zeller National Superconducting Cyclotron Lab (NSCL) at Michigan State University zeller@nscl.msu.edu Cryogenics has a long history in nuclear physics. The technology has its origins in the use of cold traps for maintaining a vacuum, which is required to prevent beam loss and for generating high voltages used in acceleration....
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?