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Booster 19 Rolls out to Masseys for Cryogenic Proof Testing

written by Ryan Weber Following Booster 18’s failure during a pressure test, SpaceX went ahead and set a new record for stacking a booster in the Starship Program, to try and get Block 3 and the program at large back on track. And this weekend, crews rolled Booster 19 out to...

Provaris Delivers on First Phase LCO2 Tank Engineering and Design

By Dominic Ellison Australian hydrogen and carbon dioxide storage and transport firm Provaris Energy has completed the phase-one delivery of an LCO2 tank front end engineering and design (FEED) program. The programme included detailed engineering and material and weld testing of a 25,000 cbm LCO2 low-pressure tank and class approval with...

New Partnership with Druck set for Major Breakthrough in Hydrogen-Powered Aircraft

The University of Bath has entered a Knowledge Transfer Partnership (KTP) with Druck, a Crane Company business, to develop the world’s first flight-certified cryogenic hydrogen pressure sensor, helping pave the way for net-zero aviation. Hydrogen is one of the most promising solutions to decarbonising air travel, with aviation currently accounting...

In Memoriam: Dr. Ray Radebaugh

It is with deep sadness that we share the passing of Ray Radebaugh. Ray was a pioneer, mentor, and friend whose influence on cryogenics spanned more than five decades and touched nearly every corner of our field. Ray’s passion for engineering began early. Growing up in Mishawaka, Indiana, he learned...

New Cryogenic Vacuum Chamber Cuts Noise for Quantum Ion Trapping

by John Toon, Georgia Institute of Technology Even very slight environmental noise, such as microscopic vibrations or magnetic field fluctuations a hundred times smaller than Earth’s magnetic field, can be catastrophic for quantum computing experiments with trapped ions. To address that challenge, researchers at the Georgia Tech Research Institute (GTRI)...

Remembering Bruce P. Strauss, a Steward of the Superconductivity Community

The superconductivity community has lost one of its most devoted stewards with the passing of Bruce P. Strauss, whose career spanned more than five decades and whose influence reached far beyond his own technical work. Bruce was not only a contributor to applied superconductivity; he was a builder of the...

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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