Need help building a ventilation system

[Bubble Bags Australia]

Hi, I don't grow, but I blow glass and I need to upgrade my ventilation system to move more air and to have ventilation hood. I am technically minded and good with figuring thigns out, but I could really use help from someone more experienced. Is there anyone that lives around Toowoomba that could help out. I'll make you a glass pipe.

[SukonmiSkunk]

moving to Toowoomba right now.. if only for a free glass pipe..

 

na.. if all you need to remove is the heat and fumes.. then is really quite simple...

 

just a gutsy inline fan.. 300.. or 250mm... with a length of ducting either side.. obviously youll have to get a hood made up.. to fit the space youre working in.. a rangehood.. like they use over the ovens for kitchens would be pretty similar to what youll need.. with a collar on top to tape the ducting too..

 

pretty similar sort of extraction youll need for a grow room.. minus the odor control..

 

sorry meerkat.. i specialize in ducted air conditioning and air extraction systems.. but no fucking where near banana land..

 

of course .. any questions you need answered ill be happy to help.. if i can..

[Bubble Bags Australia]

I am on glass blowing forums where there is lots of talk about ventilation systems, so I know what I need, I just need help building it.

 

Also with my current set up, my work bench is about a meter to the right of my window, so the system I built is a realy homebrew system where I put a large round plastic tub behind the fan, because I coudlnt find ducting large enough, so my idea was to concentrate the fan output into the flexible ducting which curves around and goes out the window.

 

To me is seemed logical, but everyone I talked to on my glass blowing forums said it was a really bad system because the fan is not powerful enough to push the air out that lenght of ducting and becuase the ducting takes sharp curves, the air is not able to be pushed through and that its a bad idea to try and concentrate the fan down into a smaller hole.

 

What I am told I need is a squirrel cage fan, like out of a heating system, somethign that will move 400 to 500 cfm, along with a large hood.

 

Also I don't know if it makes a difference, but I am not trying to move heat, there is very little of that (its all concentrated right around the flame which faces away from me), the system's primary job would be to remove fumes and microscopic glass particles so you don't breath them in.

 

Here is a pic of my ventilation setup as I built it

http://photos.meerkatboy.net/Studio-Toowoomba

[SukonmiSkunk]

ok.. yeah.. i can see what theyre getting at with the sharp bend.. theyre right .. that fan isnt built for that sort of resistance.. but i cant see why it wouldnt work.. it must push some air through..

 

what size is that fan across??.. you can get ducting to fit it.. air conditioning ducting comes in sizes upto 550.. even 600mm in diameter.. that fan looks to be around 350mm.. you can get duct to fit that.. but its a pretty sharp bend you need to get to the window.. is there no way you can line youre gear up with the window so it exhausts straight out, with no kinks?

 

might even be better to just mount the fan in the window some how?.. that way is straight out.. then using that flexible flu mounted to the fan and you can hang it where ever you need it like right up close to you where your working.. it should be solid enough to stay where you put it..

 

a 6 inch centrifugal drum fan would fit straight to that flue... and those suckers can suck.. and theyre built for that type of thing.. those kinks wouldnt even matter then.. the fan would have a more than enough grunt..

[loylty gets u nothing]

yep a couple of centrifrugals imo will do the job

its just the added heat from the blowing witch may problem things

ofc u can always try the industrial pages of ebay

as they have some wonderfull tools cheap and second hand

that have been used in an industrial set up

just soemthing to look at maybecause if u can find a system working and moves great air..it may save u some dollars

al the best

bil

[SukonmiSkunk]

just done a quick search.. came up with this.. this would be perfect for what you want to do..

 

heat and fume extraction kit

 

theyre in NSW..

[Bubble Bags Australia]

Thanks for all the advice, one of the things that is recommended on the glass blowing forums is to find a heating place that tears out old heating systems from houses and that the squirrel cage fans in those are perfect and that often these companies want to get rid of these fans as they are just scrap metal to them.

 

As for the idea of putting it right in the window, its really not possible, because there is so much other shit in my garage, I planned and planned, trying to figure out other ways, but this was really the only spot the bench could go, thus the need for the curved ducting.

 

Thanks for that link to that purging fan, it looks interesting, I will have to think about that, its too bad there is no price on the website as I am really trying to do this as cheaply as possible.

[Frazz]

Heya Meerkat if you doing it on the cheap , you can find good squirrel fans outta them old portable water-coolers, you know ? .. the bonair type ones on wheels? ... can usually pick them up @ garage sales for next to nothing and get the fan out ... they move air in cyclonic volumes and last forever ...

 

best o luck

 

[Tom]

just done a quick search.. came up with this.. this would be perfect for what you want to do..

 

heat and fume extraction kit

 

theyre in NSW..

Interesting fan, wonder how much noise it makes?

 

[hazy shade of witner]

hey there dude, if you need help with knocking up an extraction system still let me know, im a refrigeration mech and sparky too so can help with the whole kit and kaboodal and a nice glassy would fit the bill for sure.

drop me a msg if your still interested