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Scientists and engineers from across the world gathered in Lake Tahoe for the 2025 Space Cryogenics Workshop. Credit: CSA

Space Cryo Workshop 2025 Sparks Collaboration Across Continents

By Wesley Johnson and Dan Hauser The 31st Space Cryogenics Workshop (SCW) was held at the Hyatt Regency Lake Tahoe in Incline Village, Nevada, from May 13 to 15, 2025, chaired by Wesley Johnson and Daniel Hauser. More than 60 scientists and engineers from around the world convened to discuss...

Tiny Cryogenic Device Cuts Quantum Computer Heat Emissions By 10,000 Times

Researchers have developed a tiny device that extinguishes one of the biggest heat sources in quantum computers, cutting their running costs and potentially bringing these machines closer to commercial reality. Most quantum computers operate at temperatures close to absolute zero (459.67 degrees Fahrenheit, or minus 273.15 degrees Celsius) using specialized cooling equipment to...
Dr. Jeff Martin U of Winnipeg

U of W Teams Sets Record for ‘Cool’ Science’

Over the summer, Dr. Jeff Martin, chair of the physics department at the University of Winnipeg (U of W), tripled his past record for ultracold neutron production at TRIUMF, Canada’s particle accelerator centre. With the help of Dr. Russell Mammei, Dr. Blair Jamieson and several graduate and undergraduate students, Martin...
Nikkiso Contracted for Bahamas LNG-to-Power Project

Nikkiso Contracted for Bahamas LNG-to-Power Project

Nikkiso Clean Energy & Industrial Gases Group has been contracted by NPG (a joint venture to be formed by Shell and a subsidiary of FOCOL Holdings Limited) to provide liquefied natural gas (LNG) regasification and cryogenic equipment for the New Providence Gas Project in Nassau, the Bahamas. The project involves...
Researchers Build Einstein Telescope Pathfinder with 10 km Arms and 10–15 K Cryogenic Mirrors

Researchers Build Einstein Telescope Pathfinder with 10 km Arms and 10–15 K Cryogenic Mirrors

The search for gravitational waves continues to push the boundaries of precision measurement, and the next generation of detectors promises to reveal previously inaccessible cosmic events. Thomas Höhn, Adrian Schwenck, and Thomas Thümmler, from the Karlsruhe Institute of Technology, alongside the Einstein Telescope Pathfinder (ET-PF) collaboration, are developing crucial technologies...

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Refrigerators and Liquefiers

Two of the most common terms used in cryogenics are “refrigerator” and “liquefier.” These terms describe similar and, as will be seen, in some cases identical components. A refrigerator provides cooling (that is, absorbs heat) at cryogenic temperatures. Refrigerators typically put a working fluid (such as helium) through one of...

Air Separation

Air separation is one of the largest, as well as earliest, industrial applications of cryogenics. In this process, cryogenic temperatures are used to separate air into its constituent gases: nitrogen (78.08%), oxygen (20.95%), argon (0.93%) and carbon dioxide (0.3%). Trace gases such as krypton, neon, xenon and helium total far...

Coefficient of Performance and Figure of Merit

The coefficient of performance (COP) is used to describe the effectiveness of refrigerators, including those operating at cryogenic temperatures. The COP is defined as the amount of heat removed at the cryogenic operating temperature of the refrigerator divided by the amount of work that must be applied to remove the...

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...

Need help with calculating flow rate

I have to maintain a certain mass (some tons) at 100 K by circulating in it GHe (through apposite channels). How can I calculate the flow rate needed? I suppose that the delta T (T inlet and T outlet) and the heat load on the mass are necessary. Knowing the...