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10-15-2009, 07:57 AM
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#1
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-100c club
Join Date: Aug 2006
Location: Atlanta
Posts: 2,228
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R14 Price Tag Shock....
Just called AirGas on Dixie road in Atlanta to confirm they could source some r14 for me.
Price for 1 5lb cylinder...
Drum roll...$493.00
Chris maybe we can split the cost I hope 
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10-15-2009, 08:12 AM
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#2
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Diablo 3! Who's Excited?
Join Date: May 2005
Location: Atlanta, Georgia
Posts: 8,206
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Quote:
Originally Posted by sdumper
Just called AirGas on Dixie road in Atlanta to confirm they could source some r14 for me.
Price for 1 5lb cylinder...
Drum roll...$493.00
Chris maybe we can split the cost I hope |
Will have to pass, I have no need for R14, I'm going straight to R50(methane).
__________________
Team PURE is about kickass pirates and unicorns defeating ninjas. 
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10-15-2009, 08:17 AM
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#3
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Dothan FTW!
Join Date: Jun 2004
Location: London, England
Posts: 896
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Shop around, it does pay too
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I've been using Intel ever since AMD put an end to my socket A fun. I was almost going to go back when I saw the cheap AM2 chips, but they suck  Viva La Chipzilla!
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10-15-2009, 08:27 AM
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#4
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-100c club
Join Date: Aug 2006
Location: Atlanta
Posts: 2,228
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Quote:
Originally Posted by [XC] gomeler
Will have to pass, I have no need for R14, I'm going straight to R50(methane).
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Seriously? Can you call me because I must have missed something somewhere but then again what else is new
What are the condensing requirements for r50?
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10-15-2009, 11:18 AM
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#5
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-100c Club Member
Join Date: Jul 2005
Location: England
Posts: 1,339
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r14 is a killer on cost
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1. The first rule of Bench Club is, you do not talk about Bench Club
2. The second rule of Bench Club is, you do not talk about Bench Club
3. If someone says stop, goes limp, taps out, the the benching is over
4. No bummers in the batcave, apart from unkie dave
5. One Bench at a time
6. No air, no water
7. Benching will go on as long as they have to
8. If this is your first night at Bench Club, you have to Bench
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10-15-2009, 12:12 PM
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#6
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Xtreme Member
Join Date: Jan 2005
Location: Germany
Posts: 213
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-110°C should be lowest liquid temp of r50
thats about 18 bara
http://www.extremecooling.de/forum/a...k-diagramm.pdf
r50 in a third stage if you use r1150 in the second stage only is realy hard i think. the pressure ration between high- and lowpressure is huge so the compressor temp will rise in very high regions. impossible is nothing 
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10-15-2009, 12:38 PM
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#7
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-100c club
Join Date: Aug 2006
Location: Atlanta
Posts: 2,228
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Quote:
Originally Posted by Patrickclouds
-110°C should be lowest liquid temp of r50
thats about 18 bara
http://www.extremecooling.de/forum/a...k-diagramm.pdf
r50 in a third stage if you use r1150 in the second stage only is realy hard i think. the pressure ration between high- and lowpressure is huge so the compressor temp will rise in very high regions. impossible is nothing |
It looks like im stuck with the high price of r14 
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10-15-2009, 12:59 PM
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#8
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-100c Club
Join Date: Jun 2005
Location: Slovenia, Europe
Posts: 1,399
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You could auto-cascade the third stage and condense R50 at more reasonable pressures.
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10-15-2009, 01:11 PM
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#9
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Xtreme Enthusiast
Join Date: Oct 2004
Location: Crazypc.ro
Posts: 568
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You could mix r50 with one of these: r1150 / r23 / r170 to create a much easier freon for the compressor of the last stage or something to replace r14. I guess
Will try myself a mixture of r50 with r22 for a bp of -90, maybe make a thread with my cascade soon.
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10-15-2009, 01:15 PM
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#10
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Diablo 3! Who's Excited?
Join Date: May 2005
Location: Atlanta, Georgia
Posts: 8,206
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Quote:
Originally Posted by tiborrr
You could auto-cascade the third stage and condense R50 at more reasonable pressures.
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This is the hope.
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Team PURE is about kickass pirates and unicorns defeating ninjas.
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10-15-2009, 01:27 PM
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#11
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Xtreme Member
Join Date: Jan 2005
Location: Germany
Posts: 213
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but auocascades have the problem to handle a big load. most of us tune the cascades for 300watts cpu heat.
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10-15-2009, 01:37 PM
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#12
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-100c club
Join Date: Aug 2006
Location: Atlanta
Posts: 2,228
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I will try an autocascade for a personal project but this build I need to build, test, and sell quickly before Christmas to help out with Holiday expenses ...
I think I will try to blend some r1150 and r50 if it works for quintus.
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10-15-2009, 01:44 PM
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#13
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Diablo 3! Who's Excited?
Join Date: May 2005
Location: Atlanta, Georgia
Posts: 8,206
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Quote:
Originally Posted by Patrickclouds
but auocascades have the problem to handle a big load. most of us tune the cascades for 300watts cpu heat.
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Not a problem if your autocascade compressor is sized correctly. Naturally you will need a larger compressor to maintain the same load but you'll maintain that load at a lower temperature and with a much better compression ratio.
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Team PURE is about kickass pirates and unicorns defeating ninjas.
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10-15-2009, 02:02 PM
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#14
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Xtreme Member
Join Date: Jan 2005
Location: Germany
Posts: 213
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i think that would be a lot of work to get an autocascade working with 700 watt cooling capacity in a second stage.
is anybody of you going to build such a unit? pics?
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10-15-2009, 05:44 PM
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#15
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Xtreme Member
Join Date: Oct 2008
Location: NC
Posts: 240
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Try searching for its chemical name, tetrafluoromethane (carbon tetrafluoride) . I have found other refrigerants this way in smaller quantities and lesser prices
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10-15-2009, 07:53 PM
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#16
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Xtreme Mentor
Join Date: Feb 2007
Location: claremont, CA(near LA)
Posts: 2,617
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Quote:
Originally Posted by sdumper
Just called AirGas on Dixie road in Atlanta to confirm they could source some r14 for me.
Price for 1 5lb cylinder...
Drum roll...$493.00
Chris maybe we can split the cost I hope |
that would be like $100 per 3 stage for 5 cascades right? its manageable at that price... still expensive as shyte though
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10-16-2009, 04:35 AM
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#17
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-100c club
Join Date: Aug 2006
Location: Atlanta
Posts: 2,228
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Teyber, I think I might get better temps if I can blend stage 3 with r50/r1150 and achieve condensing temps at a respectable level.
It would certainly be easier to come by since Ethelyn and Methane are plentiful.
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10-16-2009, 07:19 AM
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#18
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I am Xtreme
Join Date: May 2005
Location: NJ
Posts: 9,734
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Quote:
Teyber, I think I might get better temps if I can blend stage 3 with r50/r1150 and achieve condensing temps at a respectable level.
It would certainly be easier to come by since Ethelyn and Methane are plentiful.
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However, mixing the two doesn't just give you a PT chart between the two.
You'll still simply just condense the r1150, and it will happen at a very low pressure so the R50 will be even less likely to condense.
What will then happen is called saturation, the R50 will be absorbed by the low temperature ethylene. And then the boiling point will drop a little.
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10-16-2009, 08:52 AM
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#19
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Diablo 3! Who's Excited?
Join Date: May 2005
Location: Atlanta, Georgia
Posts: 8,206
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I'd say before you buy the R14 build the 3 stage cascade and get it functional with R1150 on the 3rd stage. By the time you have that 3 stage built I'll have methane and you are welcome to experiment with it. If it goes catastrophically wrong then buy the R14. Still not sure how well using R50/R1150 in a regular cascade will go, Adam has a valid point with condensation versus saturation.
Quote:
Originally Posted by teyber
that would be like $100 per 3 stage for 5 cascades right? its manageable at that price... still expensive as shyte though
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If you can contract out 5 3 stage cascades in a reasonable time frame
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Team PURE is about kickass pirates and unicorns defeating ninjas.
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10-16-2009, 08:59 AM
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#20
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-100c club
Join Date: Aug 2006
Location: Atlanta
Posts: 2,228
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Thanks guys...
Looking for a braided stainless steel flex line and wanted just 60 inches of.
http://cgi.ebay.com/1-X-96-BRAIDED-S...item209ed7e01f
Anyway I came across this and am wondering if it can be trimmed down to 60 inches.
Im hesitant to use braided copper flex with temps as cold as Im targeting but thats an option as well.
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10-16-2009, 03:20 PM
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#21
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Xtreme Member
Join Date: Dec 2005
Location: South Carolina
Posts: 215
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I have 60" Stainless Braided flex hose. They are 5/8" I.D. and rated for high pressure. if your interested, PM me.
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