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Hypres delivers Digital-RF (TM) receiver systems to ONR

Hypres Inc. has delivered two Digital-RF (TM) receiver systems to the U.S. Department of Defense's Office of Naval Research. The systems will serve as test beds to evaluate Digital-RF technology for wireless communications applications.

Zenergy announces extension of Rheinbach, Germany facility

Zenergy Power plc announced that it will expand its manufacturing facility based in Rheinbach, Germany, allowing the company to accommodate the expected increase in production of its ground-breaking HTS induction heater.

Synchronization of LHC beam transfer system a success

According to R&D Magazine, synchronization of the Large Hadron Collider's beam transfer system was shown to be successful through tests that began on August 8th. These preliminary tests are in preparation for the LHC's official first run on September 10, 2008, which will be webcast at webcast.cern.ch.

CSA Board Member George T. Mulholland dies

Longtime CSA Corporate Sustaining Member and Board Member and Secretary George T. Mulholland, 72, passed away Sunday, August 10, 2008 at Baylor Medical Center in Waxahachie, TX.

AMSC and US Navy test HTS degaussing system

American Superconductor announced that it has supplied critical components for a high-temperature superconductor degaussing coil system that will soon undergo US Navy sea trials.

Standards for fabrication of vessels/tanks?

I’m a total novice in the design and manufacture of cryogenic equipment, but nonetheless I’m a pressure vessel Designer/Engineer. Could you possibly advise as to any relevant standards/documentation that may be available with regard to, in particular, the fabrication of vessels/tanks?

Latest in Defining Cryogenics

Two-Phase Flows

Two-phase flows are those flows in which there is a mixture of two physical states (solid, liquid or vapor). In cryogenic applications, such flows are almost always a mixture of a cryogenic liquid along with its corresponding vapor. A mixture of liquid helium and helium vapor would be a typical...

Supercritical Fluids

A supercritical fluid is defined as a substance whose temperature and pressure exceed those of its critical point. Every pure substance has a critical point that is defined in thermodynamic space by a critical temperature and a corresponding critical pressure. For example, the critical point for helium has a critical...

Brayton Cycle

The Brayton cycle is one of the many thermodynamic cycles used to generate cooling at cryogenic temperatures. Strictly speaking, when referring to cooling we should call this the reverse Brayton cycle as the original Brayton cycle describes the process of power generation or propulsion via a gas turbine. In many...

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?

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