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

BS&B Safety Systems Accelerates Service to OEMs

OEMs in virtually every market, from aerospace and automotive to refrigeration and fire protection, rely on rupture disk devices for pressure relief and pressure release of gases and liquids. The challenge of time faces all product designers; how do we get a custom solution in an acceptable timeframe? Now, at least...

The Cryomech PT205: A Compact Cryocooler with a Wide Range of Applications

In today’s rapidly evolving technological landscape, the demand for efficient and compact cryocoolers is more critical than ever. A wide range of applications increasingly require high performance cooling systems that can seamlessly integrate into limited spaces. Smaller cryocoolers prove invaluable in these contexts, offering the precision and reliability necessary to...

CO2Meter’s Critical Gas Safety Solution

CO2Meter has long been recognized for its remote oxygen depletion safety alarm, which warns staff before they enter areas with dangerously low oxygen levels caused by pressurized gas leaks. Pressurizing a gas in a tank or cylinder provides a convenient way to transport and store it. Flower shops use helium cylinders...

Jefferson Lab Dedicates Niobium-Tin Particle Accelerator Prototype

More than 30 of the world’s most advanced particle accelerators rely on one technology: superconducting radio-frequency (SRF). This technology, typically powered by pure niobium metal, has seen recent advancements with the introduction of niobium-tin alloys, which promise greater efficiency. The US Department of Energy’s (DOE) Thomas Jefferson National Accelerator Facility...

Vacuum Barrier Corporation Enhances Customer Support Through Field Service Evolution

Vacuum Barrier Corporation (VBC) has long been recognized for its commitment to excellence in cryogenic systems and liquid nitrogen (LN2) solutions. Recently, the company has made significant strides in bolstering its customer support by establishing a dedicated department for reliability and technical support. Dana Muse, Reliability and Technical Support Manager,...

Argonne Empowers Female Energy Leaders

Argonne National Laboratory (CSA CSM) recently hosted 12 women leaders from Net Zero World partner countries for a two-week training program under the Climate Smart Women Energy Leaders (CSWEL) initiative. In collaboration with the U.S. Department of Energy’s (DOE) Net Zero World Initiative, the program aimed to equip participants with...

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

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?

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