Quiet Ventilation

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cascadexpress	Quiet Ventilation	Lead	[-]
Posts: 1 (03/01/05 15:40:15) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	Tags : None Does anyone know where to get a quiet shop fan? I have the standard shop fan most people use but it just seems overwhelming for the neighbors. I bought a house fan but it said in the instructions not to place in front of flammable gases or in front of a flame. I understand the melting part but would the motor really cause an ignition of the gases when I bleed my lines? I guess house window fans don't have enclosed motors so the spark of the motor is exposed. It doesn't seem like my shop fan is enclosed either. Anyway, I was just wondering if anyone knew anything about this? $:\$
mikeaurelius	Re: Quiet Ventilation	#1	[-]
Posts: 539 (03/02/05 05:42:13) Vendor Representative Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	If you want quiet, put the fan outside. By its very nature, moving air is a noisy business. Most fan motors do not "like" being in the airstream, especially when exhausting hot air. You certainly do not need an explosion proof motor, but "air over" cooling isn't really an option when you airstream temps can conceivably exceed 150F (depending on your torch of course). A squirrel cage fan with the motor outside the airstream is a much better option. "Whole house" fans are not designed to be used as "we" use them. They rely on "air over" cooling.
consumedbyglass	Re: Quiet Ventilation	#2	[-]
Posts: 939 (03/02/05 17:02:07) Glass Guru Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I don't really like anything but a house fan in a window. If you mean box fan that probobly won't work, not fast enougth and obviously its plastic. Get a hampton bay high velocity 16-20 in, their about 30-40 bucks, they only work if you are in front of a window.
EZEddy	Re: Quiet Ventilation	#3	[-]
Posts: 578 (03/02/05 20:24:48) Glass Guru Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	Agree with Mike, squirrel cage outddors gives great CFM's and it as quiet as I've heard. 50-150 bucks on ebay. Eddy
mikeaurelius	Re: Quiet Ventilation	#4	[-]
Posts: 539 (03/03/05 05:38:02) Vendor Representative Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	Well, I just "invested" in clean air for the teaching section of my studio - a roof mounted exhaust fan, 3770 CFM @ 0.25 inches of static pressure, a cool $1400.00 from Grainger. Depending on how many of the 5 stations will be working, the minimum CFM per station will be 750. I also purchased a variable speed motor control so the unit can be dialed down as far as 50%. Ventilation isn't cheap, but they don't sell new lungs either. Still haven't decided which fan I'm going to use for the "production" section of the studio - the largest torch will be a Carlisle CC+, and possibly two of them, so it looks like somewhere around two to two and a half bills there... sigh
consumedbyglass	Re: Quiet Ventilation	#5	[-]
Posts: 939 (03/03/05 05:58:31) Glass Guru Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	On the other hand if your working in front of a window anyways, a hampton bays puts out between 3000-7000 cfm on 2 and 3 the two settings I use. I know its not true 7000 cfm but I feel a lot more airflow than in a situation with ducting and its only $40...
mikeaurelius	Re: Quiet Ventilation	#6	[-]
Posts: 539 (03/03/05 08:00:55) Vendor Representative Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	Yeah, definatley NOT 7000 CFM. Think about it - if your room is 20 foot square, with an 8 foot ceiling, that's 3200 cubic feet. With at 7000 CFM fan, you are change the air more than twice per minute... Those fans are rated at 0 inches of static pressure, essentially "free flow" (and I seriously doubt the 7000 CFM rating myself). I'll be that any sp of more than .05 and the CFM drops way down. But, as you say, it's better than nothing
consumedbyglass	Re: Quiet Ventilation	#7	[-]
Posts: 939 (03/04/05 04:17:25) Glass Guru Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	Well it sucks smoke or glass floaties right out with a quickness, and I can feel the airflow...
somberbear	Re: Quiet Ventilation	#8	[-]
Posts: 292 (03/09/05 12:50:53) Flame Fanatic Moderator Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	you could check out a couple of "grow" catalogs these guys get ultra woodies for ventlation, mufflers ducting in line blowers, butterflie valves. Im thinking of getting a dayton 495 squirl fan and riggin it right into my work hood, frankly thats enough to clear alot of air. But for you , look into the inline vortexes they have a decent cfm, and the biggist one only puts out like 67 db thats pritty quiet. and still not enough put in muffler. my $.02 hope it helps
Toymaker42	Re: Quiet Ventilation	#9	[-]
Posts: 197 (03/10/05 09:41:32) Punty Master Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I got a 750cmf inline fan from an indoor gardening center. It's not quite but it is'nt very loud. Softer than a boxfan. It was a little over 200 dollers, but it's really nice. The best thing about it is that it's easy to run ducting from the fan to to the window. I don't have it mounted, but attached to the table with a c-clamp, ducting runs 12 inches in front of my torch to the fan, then about 2 feet of ducting out the window. It's great because i can just take it appart and set it up anywhere there is a window. ~jc

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