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

Women in Cryogenics and Superconductivity 2019

CSA celebrates women in cryogenics and superconductivity. In this feature, six women in positions across the industry discuss current projects, how they entered the field and their thoughts on attracting more women to the profession.

NIST Explains the New Kelvin Definition

The definition of the kelvin (K)—the temperature unit of the International System of Units (SI), has been given a radically new definition. This redefinition was the result of 60 nations’ unanimous vote to revise the SI in November 2018.

CSA Joins CGA, GAWDA To Protest Helium Inhalation in Ad

We at the Cryogenic Society of America add our voice to that of the Compressed Gas Association and GAWDA in expressing our deep concern about a State Farm commercial that has been running across the country, depicting an accident in a tunnel with an overturned helium truck.

CERN Unveils Its Science Gateway Project

CERN is launching the Science Gateway, a new scientific education and outreach center targeting the general public of all ages. The building will be designed by world-renowned architects Renzo Piano Building Workshop. The project will be funded through external donations, with the leading contribution coming from FCA Foundation, a charitable...

Saint-Gobain Seals Releases Special Technical White Paper Exploring Critical Factors of Seal Selection in Cryogenic Space Applications

Saint-Gobain Seals has released a special technical white paper for engineers and manufacturers in the space industry titled “Sealing Solutions in Critical Cryogenic Applications: Going Beyond Leakage Rate,” describing key as well as overlooked factors related to seal selection for core systems in extreme environments such as cryogenic fuel tanks...

Hydrogen Fuel Cell-powered Drone Sets New Flight Time Record

A new Guinness World Record for the longest multi-rotor flight time was achieved by South Korean company MetaVista (CSA CSM) using Intelligent Energy’s 800W fuel cell power. The quadcopter drone flew for 12 hours, 7 minutes and 5 seconds using liquid hydrogen to fuel the module.

Latest in Defining Cryogenics

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...

Latest in Cryo Central

Cryogenic Electronics

Randall Kirschman, consulting physicist, Mountain View, California ExtElect@gmail.com Cryogenic electronics—the operation of electronic devices, circuits, and systems at cryogenic temperatures—has been a valuable technology for decades. Cryogenic electronics (also referred to as low-temperature electronics, or cold electronics) can be based on semiconductive devices, on superconductive devices, or on a combination...

Particle Physics: High Energy Physics

Cryogenics and High-Energy Physics 1. From symmetry magazine: http://www.symmetrymagazine.org/cms/?pid=1000627: Cryogenics is the study of how materials behave at temperatures near absolute zero. In high-energy particle accelerators, such frigid temperatures reduce the electrical resistance of wires in superconducting magnets, increasing the magnet strength and allowing faster particle acceleration. The same holds...

HTS Degaussing Systems

From the Spring 2009 issue of Cold Facts (Volume 25, Number 2): Thanks to a joint project by the US Navy and a number of industry partners, high temperature superconducting (HTS) technology is now at the heart of an advanced degaussing system aboard the USS Higgins at the naval station...

Magnetic Resonance Imaging

From http://www.superconductors.org: An area where superconductors can perform a life-saving function is in the field of biomagnetism. Doctors need a non-invasive means of determining what’s going on inside the human body. By impinging a strong superconductor-derived magnetic field into the body, hydrogen atoms that exist in the body’s water 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?

CATEGORIES