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Guru

Join Date: Jul 2007
Location: 30°30'N, 97°45'W, Elv: 597 ft.
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Refrigerated Gases

07/27/2007 3:16 PM

I need a good link(s) for finding out as much as I can about refrigerated AR as it would be found in a "dewar" type container. I am able to find bits and pieces but was hoping to find something more informative with no luck...yet.

CR3

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Guru

Join Date: Nov 2006
Location: KnoxTN
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#1

Re: Refrigerated Gases

07/28/2007 12:02 PM

"I need a good link(s) for finding out as much as I can about refrigerated AR as it would be found in a "dewar" type container. I am able to find bits and pieces but was hoping to find something more informative with no luck...yet."

Do you have specifics as to the information sought?

Air Products SAFETY GRAM #8 LIQUID ARGON

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Guru

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#2
In reply to #1

Re: Refrigerated Gases

07/28/2007 3:35 PM

Just needing general basics right now. Temp, volume etc.

What I am looking to do is use it as a cooling system. I am suspecting about 20' 1/8"-3/16" dia tubing coiled around a separate tube (they will share insulation) of greater temp that I wish to cool.

The idea is that by using a flow control I can recirc back into the dewar vessel and have a gradual reduction to effeciencey yet a lenghty lifespan of the cooling system

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Guru

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#3
In reply to #2

Re: Refrigerated Gases

07/28/2007 4:12 PM

Any particular or compelling reason to use L.Argon? I was under the impression that it was a bit pricey due to rarity. Is temperature critical?

Liquid Nitrogen has better availability and price

Air Products SAFETY DATA SHEET 7 LIQUID NITROGEN

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Guru

Join Date: Jul 2007
Location: 30°30'N, 97°45'W, Elv: 597 ft.
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#4
In reply to #3

Re: Refrigerated Gases

07/28/2007 6:50 PM

Nibbling near my proprietary hedges my fellow. Alas no worries. In fact glad to share.

I want as low an achievable temp as possible that is all. Hydrogen would be great with exception to the Kabang. The thought is that I will be re-introducing the warmer gas to the cooler vessel to achieve a long cooling cycle via m.f.c.

I am sending this response prior to review of your link.

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Guru

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#5
In reply to #4

Re: Refrigerated Gases

07/28/2007 11:54 PM

CR3: Just now had chance to check bp's and fortunately LN2 boils off at nearly 50 deg colder.

Do you have to replace what I will call the 'process' gas. If so a counter-flow heat exchanger would precool it with the boil off. All depends on volumes etc.

Good luck. SS

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Guru

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Location: 30°30'N, 97°45'W, Elv: 597 ft.
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#6
In reply to #5

Re: Refrigerated Gases

07/29/2007 12:20 AM

I am so far over my head I have to proceed. I suspect you might understand.

I am going to do a bit more research and then pose more targeted questions.The project is quite large minded, albeit a small device, and I have more pressing work at hand. This old idea has a habit of popping up now and again and I am at a point where I will be needing expert help (help which I cannot afford presently) but I keep an aye on the lurker all the same.

much obliged,

CR3

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