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Working with substances at temperatures below negative 200 degrees the cryogenics team at NAWCAD Lakehurst specializes in servicing oxygen and nitrogen systems on aircraft, focusing on the storage and dispersal of liquid and gaseous nitrogen and oxygen. Credit: US Navy

NAWCAD Lakehurst enhances Cryogenic Systems for Naval Aviation

As the Cryogenics and Corrosion Control Support Equipment (SE) Integrated Product Team (IPT) Lead at NAWCAD Lakehurst, Asif Yeahia knows that many people may not fully understand the work his team does. However, working with substances at temperatures below negative 200 degrees gives them one of the “coolest” jobs at the...
Startup TAU systems has built a commercial laser-powered particle accelerator that fits in a single room. Credit: TAU Systems

Room-Size Particle Accelerators Go Commercial

By Charles Q. Choi Particle accelerators are usually huge structures—think of the 3.2-kilometer–long SLAC National Accelerator Laboratory in Stanford, Calif. But scientists have been hard at work trying to shrink these accelerators down by using lasers to perform the accelerating. These particle accelerators would be the size of single room, and cost much less as well. Now, a startup says...

Chinese Physicists Settle Einstein and Bohr’s Quantum Debate

A groundbreaking experiment recreates Einstein’s 1927 thought challenge, confirming fundamental quantum principle. In a landmark study that brings a definitive close to one of the most famous debates in modern physics, a team of Chinese scientists has experimentally validated Niels Bohr’s core quantum principle, demonstrating that a particle’s path and...

Twisted Stacks of 2-D Carbon Act Like a Weird Type of Superconductor

“Magic-angle” graphene could help solve the puzzle of how unconventional superconductors work By Emily Conover Stacks of graphene, carefully twisted, gain a superpower: They become superconductors. Now scientists have new evidence that this “magic-angle” graphene is a member of a truly strange class of superconductor. Like all superconductors, the materials, known...
Images--Left: Current input terminal (100A compatible, size: outermost metal diameter Φ16mm x length 94mm) Right: MS-8 pin terminal (Maximum 110A, size: metal outer diameter Φ41mm x length 72.5mm)

World-First High-Current Terminals for Liquid Hydrogen

Kyocera Corporation (President and CEO: Hideo Tanimoto, hereinafter referred to as “Kyocera”) is pleased to announce that, through joint research with the Japan Aerospace Exploration Agency (hereinafter referred to as “JAXA”), it has developed two new products: a 100A current feedthrough terminal that ensures durability and airtightness in liquid hydrogen...

Making a Splash on Cryogenic Surfaces

Cryogenic surfaces do not hinder droplet splashing, but smaller droplets make smaller splashes. Hannah Richter On a rainy day, a classic physical property is on display: droplet splashing. How liquids splash is not just important for keeping one’s clothes dry, but for applications from inkjet printing to spraying crops to...

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Helium-3

Helium-3 (3He) is one of the two stable isotopes of helium. The other is the much more common Helium-4 (4He). Neither of these isotopes should be confused with He II, which is the second liquid phase of 4He. He II was discussed in this column in the Spring 2010 edition...

Cryopumping

Cryopumping refers to the use of cryogenic temperatures to produce vacuum in enclosed spaces. More broadly, it can also refer to the removal of gases via cryogenic temperatures from a flow stream or enclosure without necessarily resulting in vacuum pressures. This is an important application of cryogenics and is used...

Thermal Acoustic Oscillations

Thermal Acoustic Oscillations (TAO) are a common event in cryogenic systems that can have significant adverse effects on the performance of the system. TAOs are sustained pressure oscillations that can occur in tubes containing gas, closed at one end (the warm end) that have a very large temperature gradient along...

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...

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...