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Winners of Bernd T. Matthias Prize for Superconducting Materials announced

Three scientists have been named as recipients of the 2015 Bernd T. Matthias Prize for Superconducting Materials, an international prize awarded for innovative contributions to the field. The prize will be formally presented during the 2015 International Conference on Materials and Mechanisms of Superconductivity in Switzerland this August.

Two CryoTel CT-Fs return to Earth on the Dragon X

NASA confirmed on May 21 that the Space X Dragon successfully splashed down at 12:42 EST in the Pacific. The spacecraft was returning from the International Space Station with two POLAR freezers incorporating a CryoTel CT-F cryocooler in each.

SC study’s reported successes and failures provide valuable data

In their paper "Exploration of new superconductors and functional materials, and fabrication of superconducting tapes and wires of iron pnictides" published in Science and Technology of Advanced Materials, researchers report on four years of extensive research on around 1,000 materials, with detailed insights learned from the new superconducting materials discovered...

LHC arrives at the next energy frontier

The Large Hadron Collider (LHC) is collecting data again for the first time in two years. After powering back on in April and seeing its first record-energy collisions in May, the LHC began colliding particles at a steady rate to provide data for research on June 3. During Run II,...

GTI’s David Carroll assumes presidency of IGU

On June 5, David Carroll, Gas Technology Institute (GTI) president and CEO, assumed the additional role of president of the International Gas Union (IGU) for a three-year term at the closing ceremony of the World Gas Conference in Paris. With the growth of natural gas in the global energy landscape,...

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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....

Air Separation and Liquefaction

by Nils Tellier, PE, President, EPSIM Corporation (CSA CSM) nils@epsim.us All illustrations courtesy EPSIM Corporation Background History of Air Separation and Liquefaction This section builds on a rich history of methods to develop deep refrigeration and cryogenic liquefaction during the 19th Century. You are encouraged to read Cryo Central’s History...

Bose-Einstein Condensate

A Bose-Einstein condensate, first proposed in 1925 by Albert Einstein based on work done by Satyendra Nath Bose (the same Bose from whom the term boson is derived), is a super-cold state of matter in which almost all of the individual atoms have “condensed” down to the lowest possible quantum...

Cold Technology for Pest Control

While it does not reach temperatures cold enough to be called cryogenic, carbon dioxide snow is at the heart of a new way of dealing with unwanted pests. It utilizes a quick freezing process that takes advantage of the properties of carbon dioxide snow and has a number of benefits...

Cryogenic Finishing

The following 3 articles discuss the uses and procedures of various type of cryogenic finishing. 1) By Robin A. Rhodes, Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Cryogenic Deflashing is employed to remove undesired residual mold flash that remains on molded parts after they are removed or ejected from the...

Approximating pressure changes over time in cryogenic cylinders

I am an Air Resources Engineer with the California Air Resources Board (CARB). My senior management has asked me to investigate approximating pressure changes over time in cryogenic cylinders that contain LNG. So far, I have taken a stab at the problem, seeking to take a back-of-the-envelope approach (as directed...