Standard Chartered Private Equity (SCPE) has invested INR 2,500m (US$45 million) for a minority stake in Inox India Limited (INOXCVA), a leading global manufacturer of cryogenic storage and transportation equipment.
Month: August 2012
World record quality factor achieved at Fermilab
Earlier this year, Fermilab scientist Anna Grassellino began researching past successes and failures of accelerator cavities made of bulk-diffused niobium-nitride. Scientists reported less-than-stellar results in their tests in the 1990s and, in the years since, appeared to have mostly abandoned the material as a possibility for superconducting cavities. But Grassellino believed trying niobium nitride would be worth another go-round.
Superconductor ‘flaws’ could be key to its abilities
Many researchers studying superconductivity strive to create a clean, pure, perfect sample, but a team of physicists at Purdue University found that some flaws might hold the key to a material's unique abilities.
Cooled coal emissions would clean air, lower health and climate change costs
Refrigerating coal plant emissions would reduce levels of dangerous chemicals that pour into the air—including carbon dioxide— by more than 90 percent, at a cost of 25 percent efficiency, according to a simple math-driven formula designed by a team of University of Oregon physicists.
Israeli refrigerator part of equipment on Mars Curiosity Rover
The Curiosity rover, currently on Mars after recently landing in a tricky operation controlled by National Space and Aeronautics Administration (NASA) technicians, includes a refrigerator manufactured in Israel.
First room-temperature maser developed
British researchers have, for the first time, built a prototype solid-state maser that works at room-temperature, with no permanent applied magnetic field.
Compensators and/or accumulators: Are they used in cryogenics?
Are compensators and/or accumulators, high or low pressure, used in cryogenics? Are they used in space?
Seeking recommendations for commercial sensors
I would like to measure vibrations in small LHe cryostats. Could anybody recommend commercial sensors which would be suitable for the purpose? I am interested in the frequency range between 1Hz and a couple of KHz, with particular attention to the low frequency side.
Estimating cost of carbon steel, pure helium storage tanks
In order to perform an indicative cost assessment of our helium cryogenic plant (still in the design phase), I need an estimation of the cost of carbon steel room temperature pure helium storage tanks. The storage pressure is 20 bar. Can anyone give me suggestions about how to estimate the cost of these tanks? We … Continue reading Estimating cost of carbon steel, pure helium storage tanks
Estimating cost for components of a helium plant
I have to perform a cost estimation of our helium cryogenic plant design. I based it on the formula discussed in the following article "THE COST OF HELIUM REFRIGERATORS AND COOLERS FOR SUPERCONDUCTING DEVICES AS A FUNCTION OF COOLING AT 4 K" by M. A. Green: C(M$) = 2.6 [R(kW)]^0.63 This is an updated version … Continue reading Estimating cost for components of a helium plant
Supplier of pressure sensor that works down to 4.2 K
In an actual experiment we would like to measure the static pressure in a cryostat in the range between one and four bar. Therefore we are looking for some (more or less) cheap pressure sensors that work in liquid helium in the pressure range up to five bar. Unfortunately all sensors mentioned in the literature … Continue reading Supplier of pressure sensor that works down to 4.2 K
Looking for reference/textbook suggestions
Can you suggest some reference textbooks for practical thermodynamics applications in cryogenic fields? I need textbooks with cryogenics calculations and examples, dimensioning procedures, second principle applications in cryogenics, heat load calculations, cryogenic pump application, etc. Do such books exist? Does any similar source of information exist?
Power usage: cryogenic systems vs. regular refrigerators
A recent project highlighted to me that closed cycle cryogenic cooling systems use far more electrical power to reduce temperatures by a few watts than regular refrigerators. I am sure it must be something to do with the extra difficulty of removing the heat from the liquid nitrogen or similar but I was wondering if … Continue reading Power usage: cryogenic systems vs. regular refrigerators
Redundancy strategies for mechanical -80C freezers
I was wondering what kind of redundancy strategies are people using for their mechanical -80C freezers? I am aware of the following. Please add if you are doing something different. 1) 1 Backup freezer for every 10 freezers - Empty and maintained at -80C at all times 2) Backup C02 sensor and tank 3) Backup … Continue reading Redundancy strategies for mechanical -80C freezers
Safety guidelines for handling cryo vessels of nitrogen
I am looking for any safety guidelines for handling cryogenic vessels of nitrogen indoors and outdoors. I am especially interested in recommendations for area monitors to detect leaks, flow detection devices, etc.
How much heat energy does LN2 contain per lb.?
I would like to know how much heat energy liquid nitrogen contains per lb. In other words, per lb. of liquid, how many BTUs of heat would N2 absorb in the process of coming up to about 60F? I want to capture the cold energy of nitrogen as it vaporizes and store that cold energy … Continue reading How much heat energy does LN2 contain per lb.?
Method to move components in a cryogenic environment
Does anyone know of a method with which to reliably move components in a cryogenic environment? We are interested in moving detectors in a cryogenically cooled (2K) vacuum chamber, which is contained within a larger cryostat/isolation vacuum with thermal shields. As the desired horizontal or vertical displacement is between 10 cm to 40 cm depending … Continue reading Method to move components in a cryogenic environment
TS diagram for helium
Where can I obtain a really big, nice TS diagram for helium ?
Software for thermophysical properties of helium down to 1K
What are the options when it comes to software for thermophysical properties of helium at temperatures down to 1K? I know Hepak - is it still the most commonly used package?
Reliability and mounting of electronic substrates at low temperatures
I am currently working on the design of a focal plane assembly to be implemented on a small satellite (4 EMCCD detectors) to be operated at -80°C (which is not really cryogenic and likely still considered boiling hot for most of you :-). As it is passively cooled, the assembly will experience about -120°C during … Continue reading Reliability and mounting of electronic substrates at low temperatures
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