Pyrex or glass tubes. Carbon

[Micro420]

Next couple of months I am going to start rebuilding my PC from scratch again. Got a couple of plans drew up, which include using the 100 hps. Now the fans I've been eye balling the Vantech Tornadoes, about 120 cfm. But my main question where is the best place to get glass or pyrex tubes?
I've got a clear tube now, though its a plastic/arylic tube. Any chance of that melting in a cooltube setup? I've been searching online on Lowes and Homedepot for pyrex, but no luck.

The plans I'm talking about include a slim line carbon scrubber. Is activated carbon fiber on the market? Something like AC filters or just regular activated carbon.

Thanks
micro

 

[cork144]

ebay sells clear plastic tubing, 3mm thick, after asking about it on here, general feedback was to not do it, but i was planning a 250watt hps, im sure a 100watt would be fine in a 120mm tube or so, 2 pc fans on each side, one pulling out of the tube the other pushing in.

oh and they will custom cut to the dimensions you want.

 

[itsmysubaru]

get smart, and use a free flowing axial fan ~50cfm to cool your lights, and separate your filtered air. that way you can have a more efficient centrifugal blower filtering air at ~20cfm, which is all you need if you keep things separated. the vantechs are nice, but are axial and just spin really high rpm. they move a lot of air, but not under load. which is what a filter is. for that you need a blower, squirrel cage, centrif. fan, whatever you want to call it. that way you use less power, make less noise, and use each fan for what it was designed for.

/rant.

 

[D.I.trY]

micro420, with regard to your carbon filter question: filter pads did not work for me, but your question couldnt have been better timed. Here is what i built, it does work and 1 noctua 120mm fan moves a nice amount of air through the case
http://www.icmag.com/ic/showthread.php?t=118952&page=2

post #21

 

[ScrubNinja]

Hi micro420. Check out ebay or similar sites for bake-a-round pyrex tubes. I think they come in a few dimensions. I see a lot of micro hps guys using these. Good luck.

 

[Micro420]

Thanks ya'll. Guess I'll have to reconsider on the fiber for a scrubber.

But still two or maybe three pc fans will not have to the power to move air out of a pc into a scrubber than out? Btw was checking ebay on the bakearounds. Whats the usual lenght on those? Are they easy to cut with a saw? I hope that I won't need a diamond tip saw.

Thanks
micro

 

[ScrubNinja]

Not too sure about dimensions as I've never used them. I've never heard of someone cutting glass with a saw... not to say it isn't done. When I was a kid I had a bottle cutting kit - sort of a tiny rack and you'd put the bottle on, press firmly and rotate, then hope you'd get a clean break. It failed maybe 3 or 4 times out of ten.

Frankly, I'd take it to an expert to get it cut. If there was no expert around, I'd probably try this (video): http://www.metacafe.com/watch/508368/how_to_cut_a_glass_bottle/

 

[Polsevogn]

I believe the bake-a-round is 14 inches long. This may be incorrect, but I think it's right.

They don't make em anymore, I am pretty sure the dimensions are all the same. Gotta scrounge the thrift shops or ebay for them.

Here's a 10-inch, wider tube. The glass is likely thinner, but it might do you the trick:
http://www.save-on-crafts.com/glcycash10in.html

Others can surely be found. Good luck.

 

[D.I.trY]

whats wrong with having a single piece of glass held horizontaly beneath the hps and ducting the air flow through the bulb/glass cavity?... or what about instead of a glass tube, a glass square cross-section? You could buy 2mm thick glass for the job really cheap and a bit of metal work at each end to hold it together

 

[Micro420]

Thanks for the help folks need more assistance now so if anybody could help. Two thumbs up.

whats wrong with having a single piece of glass held horizontaly beneath the hps and ducting the air flow through the bulb/glass cavity?... or what about instead of a glass tube, a glass square cross-section? You could buy 2mm thick glass for the job really cheap and a bit of metal work at each end to hold it together

I've actually thought about that too sort of like a glass hood. Probably be pretty easy to build. I've still yet to decide on a hood or cool tube type setup.



But ok folks. I've a seen a 4 pack 80mm pc fans. They put out a total 111.2 cfm between the 4. Would that be enough power if rigged up push/pull setup. Either cooltube or hood.

I've looking at some forumlas and not sure if my math is correct. But my thinking 111.2 CFM would be enough with a scrubber too.

But inside cab dems are

16.25"L * 6.5"W * 17"H = 1.04 Cu Ft

Exchange rate of 10*1.04= 10.4CFM
100 watts/4= 25 AEC CFM
10.4+25= 35.4 CFM total need to keep cool by 5-10 degree of amibent temp-- unrestricted flow.
Plus the carbon scrubber.

Intake slot is going to be passive 6.5"L*4.25"W
Exit slot is going to be 5"L*2.5"W with active with fans.