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

Boundary-Layer Detection in a Cryogenic Wind Tunnel Using Temperature-Sensitive Paint Coupled with a Carbon Nanotube Heating Layer

For engineers developing and designing new aerospace vehicle concepts, the determination of the transition from laminar flow to turbulent flow on an aerodynamic surface is of vital importance. It can be critical for accurate drag estimation, for example, and there are efforts underway to design wing shapes and vehicle concepts...

Nanoparticles Key to Tissue Preservation

A multidisciplinary research team has discovered a groundbreaking process to cool and rewarm large-scale animal heart valves and blood vessels preserved at very low temperatures. The discovery could result in a major step forward in saving millions of human lives by increasing the availability of organs and tissues for transplantation,...

APS Joins SCOAP3 Consortium

CERN, the European Organization for Nuclear Research, and the American Physical Society (APS) have entered into an agreement through SCOAP3 to provide open access to high-energy physics articles published in APS journals. The partnership, which begins in January 2018, covers articles from Physical Review C, Physical Review D and Physical...

NCIS Bungles Investigation, Conflates Cryogenics and Cryonics

A recent episode NCIS, a popular CBS police procedural, featured a villain who killed his victims with liquid nitrogen, interring them alive inside a homemade cryonics chamber. During the big reveal, the NCIS writers conflate cryonics with cryogenics, using one of the show's trope scientific experts to present the latter...

CSA Board Member Joins Superconductivity Center at FSU

Florida State University has hired Lance Cooley, CSA board member and a scientist at the Fermi National Accelerator Laboratory (CSA CSM), to join the Applied Superconductivity Center (ASC) at the FSU-based National High Magnetic Field Laboratory. He will also have a faculty appointment in the Department of Mechanical Engineering at...

Physicists Observe Negative Mass in Bose-Einstein Condensate

Washington State University physicists have created a fluid with negative mass. Push it, and unlike every physical object in the known world, it doesn’t accelerate in the direction it was pushed. It accelerates backward. Led by Peter Engels, WSU professor of physics and astronomy, the researchers generated the conditions for...

Latest in Defining Cryogenics

Liquid Hydrogen

Hydrogen becomes a liquid at 20K and 1 bar. Liquid hydrogen (LH2) is an important substance in industry, transportation and research. Industrial uses of hydrogen include applications in the electronics, glass, chemical and metal processing fields. In these applications, the hydrogen is generally used as a room temperature gas but...

Superconducting Radiofrequency Cavities

Superconducting radio frequency (SRF) cavities represent an important application of cryogenics and superconductivity. SRF cavities are a technology for accelerating charged particle beams via the transfer of radiofrequency (RF) energy to the beams via resonant structures. As such, they are frequently found in large particle accelerators used for scientific research....

Thermal Radiation Shields

Actively cooled thermal radiation shields are a common feature of cryostats whose lowest temperature is less than 77K. These shields, which typically operate at temperatures between that of LN2 and 40K, block thermal radiation from higher temperatures from reaching lower temperature cryogenic components or fluids. Since the heat radiated from...

Latest in Cryo Central

Air Separation and Liquefaction

by Nils Tellier, PE, President, EPSIM Corporation (CSA CSM) nils@epsim.us All illustrations courtesy EPSIM Corporation Background History of Air Separation and Liquefaction This section builds on a rich history of methods to develop deep refrigeration and cryogenic liquefaction during the 19th Century. You are encouraged to read Cryo Central’s History...

Bose-Einstein Condensate

A Bose-Einstein condensate, first proposed in 1925 by Albert Einstein based on work done by Satyendra Nath Bose (the same Bose from whom the term boson is derived), is a super-cold state of matter in which almost all of the individual atoms have “condensed” down to the lowest possible quantum...

Cold Technology for Pest Control

While it does not reach temperatures cold enough to be called cryogenic, carbon dioxide snow is at the heart of a new way of dealing with unwanted pests. It utilizes a quick freezing process that takes advantage of the properties of carbon dioxide snow and has a number of benefits...

Cryogenic Finishing

The following 3 articles discuss the uses and procedures of various type of cryogenic finishing. 1) By Robin A. Rhodes, Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Cryogenic Deflashing is employed to remove undesired residual mold flash that remains on molded parts after they are removed or ejected from the...

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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