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

TU Wien Researchers Discover New Magnetoelectric Effect

Physicists at TU Wien in Vienna have discovered a new magnetoelectric effect in an unexpected material: a so-called langasite made of lanthanum, gallium, silicon and oxygen doped with holmium atoms. The electrical properties of some crystals can be influenced by magnetic fields—and vice versa. These "magnetoelectric effects" can play an...

International Cryocooler Conference to be Held as All-Virtual Event

Due to the ongoing pandemic, organizers have moved the fall International Cryocoolers (ICC21) meeting conference to a totally virtual event to be held December 7-10, 2020. There will be no on-site attendance, but technical papers and poster sessions will be pre-recorded live and presented via Zoom®. Learn more and register...

New NASA Gears Can Withstand Impact, Freezing Temperatures during Lunar Missions

A joint NASA JPl/Caltech project is developing special gears that can withstand the extreme temperatures experienced during missions to the Moon and beyond. Many exploration destinations in our solar system are frigid and require hardware that can withstand the extreme cold. During NASA’s Artemis missions, temperatures at the Moon’s South...

Technifab Introduces Updated Automatic Dewar Filling Station

Technifab Products (CSA CSM), a producer of cryogenic equipment and systems, released the latest version of their Automatic Fill Station, the AFS-01. The system is designed to fill portable low pressure liquid nitrogen dewars from a pipe system or bulk tank. The AFS-01 puts an emphasis on three main points:...

APS designates Sanford Lab, Morgan State University as historic physics sites

On September 14, the American Physical Society (APS) announced it has designated Sanford Lab Underground Research Facility (SURF) and Morgan State University as two Historic Sites in physics. SURF, located in Lead SD, is being recognized for its role in neutrino research led by Ray Davis while Morgan State University...

Lab Researcher and Physics Undergrad Creates Poster Project Honoring Black Physicists

Inspired by the nation’s grappling with issues of race and racial discrimination, UC Berkeley physics major and Berkeley Lab student assistant Ana Lyons turned to art as a way to contribute to the conversation. Aware of the scientific community’s own self-reflection for its history of racial inequity and discrimination, Lyons...

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

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...

Cryogenic Treatment of Materials

F.J. Diekman Controlled Thermal Processing, Inc. info@metal-wear.com Cryogenic Processing (also called cryogenic treatment, and incorrectly “cryogenic tempering”) is a process that uses cryogenic temperatures to modify materials to enhance their performance. Cryogenic Processing involves the slow reduction in temperature of the material to at least -300°F (-185°C) and holding 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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