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

Construction Begins on International Megascience Neutrino Experiment

A groundbreaking ceremony on July 21 at the Sanford Underground Research Facility (SURF) in Lead, South Dakota, marked the official start of the Long-Baseline Neutrino Facility, future home to the international Deep Underground Neutrino Experiment (LBNF/DUNE). In the unique ceremony, a group of dignitaries, scientists and engineers from around the...

Oak Ridge National Lab Chooses D-Wave to Advance Computing Programs

Oak Ridge National Laboratory (CSA CSM) has chosen D-Wave Systems Inc., a leader in computing systems, to provide cloud systems to help advance its hybid computing applications. Under the agreement, ORNL scientists will have cloud access to a D-Wave 2000Q™ system that allows for exploration of hybrid computing architectures as...

Working Group Formed to Standardize Cryotherapy

The International Institute of Refrigeration (IIR) has formed a new working group focused on whole-body cryotherapy. The group will focus on standardizing both exposure protocols and temperature measurements for all existing WBC devices and developing safety instructions for cold exposure.

Physicists Propose New Superfluid Helium-4 Wave Detector

A collaboration of US-based researchers has proposed a new type of detector that would measure sound waves caused by gravitational waves in the 0.1–1.5 kHz range. The system comprises several kilograms of superfluid helium-4 held in a cylindrical container that is coupled to microwaves in a superconductor resonator. Confinement in...

Scientists Observe Ultrafast Vortices in Superconductors

A research team has made the first direct visual observation and measurement of ultrafast vortex dynamics in superconductors. The technique used, detailed in the journal Nature Communications, could contribute to the development of novel practical applications by optimizing superconductor properties for use in electronics, according to the scientists.

What Really Happens During an LHC Collision?

The Large Hadron Collider, with its 17-mile circumference, is definitely large, but the latter fraction of its name is a little misleading. That’s because what collides in the LHC are the tiny pieces inside the hadrons, not the hadrons themselves.

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 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...

Cryogenics in Space

Peter Kittel University of California-Berkeley pkittel@cal.berkeley.edu Space Cryogenics is the application of cryogenics to space missions. These applications fall into two broad areas, supporting space science missions and supporting the space transportation infrastructure. Science applications: The atmosphere is opaque to much of the electro-magnetic spectrum. In space, the absence of...

Cryosurgery

Review of Cryosurgery Boris Rubinsky, PhD Hebrew University School of Science and Engineering Research Center for Biomedical Engineering 78b Ross Building Givat Ram, Jerusalem 91904 Israel rubinsky@cs.huji.ac.il as published in Annual Review of Biomedical Engineering, August 2000, Vol. 2, pp. 157-187. Abstract: Cryosurgery is a surgical technique that employs freezing...

Liquefied Natural Gas

Liquefied Natural Gas as it relates to the Field of Cryogenics John W. Bonn VJ Systems, LLC johnbonn@vjsystems-lic.com Today the world is looking for a cleaner fuel and Liquefied Natural Gas (LNG) plays a large part in achieving this goal. LNG in a liquid form is at -162°C (-259°F) 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