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 Post subject: High Pressure Air Compressor
PostPosted: Mon Mar 08, 2010 8:28 pm 
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Joined: Fri Jan 29, 2010 3:50 pm
Posts: 5
Location: Minneapolis
I am looking for a high pressure air compressor (<1000 psi). They are commonly found in SCUBA tank filling systems or Paint Ball refill stations. These can be bought new for $2 to 10 k. Obviously, I am looking for one available on the cheap. I don't even require it to be entire functional!

Does anyone have one or know of a salvage location that does?

-Brian

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 Post subject: Re: High Pressure Air Compressor
PostPosted: Wed Mar 10, 2010 9:33 am 
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Joined: Mon Mar 30, 2009 11:03 am
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Location: Maple grove
I am not sure your application but be very careful with high pressure equipment there is a very good reason that scuba tanks are filled in a concrete enclosure.


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 Post subject: Re: High Pressure Air Compressor
PostPosted: Wed Mar 10, 2010 4:12 pm 
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Location: Minneapolis
orion wrote:
I am not sure your application but be very careful with high pressure equipment there is a very good reason that scuba tanks are filled in a concrete enclosure.



This is a fairly low volume/low energy application. I am guessing we are talking well under a liter of volume.

For background: I wish to build a cryo-cooler. Effectively, I want to replicate a Linde cycle gas liquification system http://en.wikipedia.org/wiki/Hampson%E2%80%93Linde_cycle. While it requires high pressures, we aren't talking more than a meter or so of fairly .25 to .5 in tube.

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 Post subject: Re: High Pressure Air Compressor
PostPosted: Wed Mar 10, 2010 4:31 pm 
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Joined: Tue Mar 17, 2009 5:06 pm
Posts: 319
Location: Minneapolis, MN
If is a small vol of air, maybe a pneumatic cylinder arm could provide you with the needed pressure.

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 Post subject: Re: High Pressure Air Compressor
PostPosted: Wed Mar 10, 2010 8:39 pm 
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Joined: Fri Jan 29, 2010 3:50 pm
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Location: Minneapolis
swinkdaddy wrote:
If is a small vol of air, maybe a pneumatic cylinder arm could provide you with the needed pressure.


That is most likely how it was done when Linde made his machine.

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