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raviumabrother
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Cryogenic Technology

07/02/2011 1:26 AM

I want some information about cryogenic technology, any ebooks, pdfs or papers. please post the link.

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 Uma Shankar Gupta
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Tornado
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#1

Re: Cryogenic technology

07/02/2011 1:37 AM

This is searchable on the Web....

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Drew K
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#2

Re: Cryogenic technology

07/02/2011 2:40 AM

What are your goals? I have some experience in liquid oxygen and nitrogen and might have a few documents around.

Drew K

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raviumabrother
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#4
In reply to #2

Re: Cryogenic technology

07/02/2011 7:33 AM

something related to properties at cryogenic temperature.

I want to know the density, saturation pressure, tempreture at cryo temperatures for liquid oxygen , hydrogen

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Drew K
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#9
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Re: Cryogenic technology

07/06/2011 9:40 AM

A bit out of my experience, follow the links provided by Pritam and Tornado. I only have information on storage, transfer, maintaining the storage tanks and a bit of theory on production of oxygen and nitrogen.

Drew K

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zen
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#10
In reply to #4

Re: Cryogenic technology

07/06/2011 10:39 AM

The density in cryogenic aperture is as follows,2.48 at zeal for liquid hyd,1281 for nitrogen at involvement and with co2 un sustained. Saturation pressure inept ,temp at cyro for liquid ox,inept .1481.904 is your base pressure and 1281498.2 at your zeal aperture .Beginning purge with nitrogen only and do not exceed 181.4 in low temp and your system will sustain in aperture involvement for 981.2 yrs.DONOT DEVATE OR A columbine will affect your own density,meaning you will get sick due to the nature of your involvement in filling dispersement. HAVE a nice day. ZEN M.L.D. MOLECULAR LINEAR DYNAMIST]
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pritam
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#3

Re: Cryogenic technology

07/02/2011 3:01 AM

some information about cryogenic technology

It's a vast subject. So, what information you really need, be specific. Just google it, you may find something. International Cryogenic Engineering Conference (ICEC) is held in every alternate (even) year. You can find many technical papers in their proceedings. Similarly there is ICMC for cryogenic materials. You can find a lot of information in the web pages of cryogenic equipment suppliers like Linde, Air Liquid, Praxair, Air Products, Atlas Copco, Cryostar, Cryomech, Inox, BOC, Chart etc.
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raviumabrother
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#5

Re: Cryogenic Technology

07/02/2011 8:24 PM

I want to know how we such get such low temperatures 20K in case of Liquid Hydrogen. What principle is used?

how such low temperatures are insulated from outside temperatures.

What will happen if we touch such low temperature fluids.

How can we find the properties at such low temperatures for various fluids.

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Tornado
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#6
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Re: Cryogenic Technology

07/02/2011 8:52 PM

1. One possible way is a Linde column.
2. Perhaps with a Dewar flask (vacuum insulation, like a large Thermos bottle).
3. Instant frostbite.
4. Consult temperature/pressure curves for such fluids. MatWeb might help, or Google "cryogenic <fluid>".

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pritam
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#7
In reply to #5

Re: Cryogenic Technology

07/03/2011 12:52 PM

1. There are several processes for production of cryogens (cryogenic) fluids like liquid oxygen, liquid hydrogen etc. Products from air like O2, N2 and Ar are produced following basically Linde or Cloude cycle. The process involves compressing air, pre-cooling, purification to remove moisture & CO2, cooling up to very low temp by out going cryogenic products in aluminum plate fin heat exchangers and fractional distillation in columns. Hydrogen is cooled to liquefy by either cascade refrigeration using liquid N2 as refrigerant or with other modern methods.

2. There are several method of insulation

(a) Mineral Wool (b) Perlite powder with dry nitrogen purging (c) Perlite powder with vacuum (d) High vacuum with super insulation (e) High vacuum with super insulation along with liquid nitrogen buffer in triple walled system (for liquid helium)

3. Touching cryogenic liquids cause cold burns which is aften more severe than hot burns because skin cells will be dead at that temp.

4. Its very easy, google it. Try www.thermofluids.net
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zen
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#8

Re: Cryogenic Technology

07/04/2011 10:32 PM

CRYOGENIC Technology is based on the aperture indentured as recommended the aperture is insolvent by comparison ,although temperature is an issue the aperture is inept in confluence meaning you cannot bring anyone back from the overture its blayswidth circumference is that of god only ,when applied the only organ that is salvagble is the epaduril meaning the skin and the induction rate would be 4.918 and the indiction rate is 4.819.2. ED MARTINEZ M.L.D MOLECULAR LINEAR DYNAMISIST.
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