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Innovative Liquid Hydrogen Tank Tech Gets ABS AIP

In a development that validates large-scale liquid hydrogen tank technology for shipping, HD Korea Shipbuilding & Offshore Engineering (HD KSOE) has received approval in principle (AIP) from ABS for a tank design that enables large-scale hydrogen transportation and storage. ABS completed design reviews based on class and statutory requirements. “Hydrogen is...

NASA’s NICER Continues Science Operations Post Repair

NASA crew aboard the International Space Station installed patches to the agency’s NICER (Neutron star Interior Composition Explorer) mission during a spacewalk on Jan. 16. NICER, an X-ray telescope perched near the station’s starboard solar array, resumed science operations later the same day. The patches cover areas of NICER’s thermal...

Cryoport Unveils HV3 Cryogenic Shipping System for Advanced Therapies

Temperature-controlled supply chain solutions specialist Cryoport has launched a new high-volume cryogenic shipping system. The Express® Cryogenic shipping system, HV3 for short, is designed to meet the needs of advanced therapies, keeping temperature stable at -150°C and is compliant with airline requirements to allow for air travel. The HV3 offers additional...

Dover Adds Cryogenic Pumps to Its Pumps & Process Solutions Segment

Dover announced that it has acquired Cryogenic Machinery Corp. (“Cryo-Mach”). The acquisition will become part of the PSG business within Dover’s Pumps & Process Solutions segment, expanding Dover’s presence in the cryogenic end market. Headquartered in North Hollywood, California, Cryo-Mach is a specialized designer and manufacturer of mission-critical cryogenic centrifugal pumps,...

Cryogenic Upgrade Boosts Capacity by Almost 80%

With the rise in deep-space missions, more international requests, and increasingly intense data streams, the demand for deep-space ground stations has never been higher. Yet, the system is nearing full capacity. To alleviate the load on its three deep-space antennas within the global ground station network (Estrack), the European Space...

Demaco Unveils New Brand Identity as Part of OPW Clean Energy Solutions

Entering its 65th year of operation, Demaco Holland B.V., based in Noord-Scharwoude, The Netherlands, proudly announces the release of its new logo and brand identity. The refreshed branding signifies Demaco’s integration as a core member of OPW Clean Energy Solutions, a business unit of OPW, a Dover company, following its...

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

Primary Standards

Elie K. Track Hypres, Inc. elie@hypres.com http://www.hypres.com/ Primary standards involve the exact definition and realization of units of measurement for various quantities, time, length, mass, voltage, resistance, current, etc. International agreements based on the latest scientific knowledge define those units, and their realizations vary depending on the unit itself. For...

Shrink Fitting

Robin A. Rhodes Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Shrink fitting, (or “compression fitting” as it is sometimes called), is a method used to insert a pin or bushing into a housing or other assembly requiring an extremely tight tolerance fit. It can be used as an alternative to...

Telecommunications

From the Winter 2004 issue of Cold Facts magazine The recent M-Calc IV — 4th Industry Assessment workshop discussing military and commercial applications for low-cost cryocoolers, held in November in San Diego, highlighted progress being made in cryogenics as applied in telecommunications. The reliability and long lifetime of projects now...

Wind Tunnels

Dr. Robert Kilgore The development of the cryogenic wind tunnel is one of many significant breakthroughs in both cryogenics and wind-tunnel technology made during the past millennium. Interest in the development of high-speed commercial and military aircraft resulted in a review of problems of flow simulation in transonic wind tunnels...

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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