Vehicle Exhaust Extraction: Finding a Fan

[stick70]

I fell into a really ridiculous deal on an exhaust reel a while back and I'm starting to want to do something with it and get it up out of my floor. It's similar to this:
https://www.fumeavent.com/exhaust-hose-reels/spring-operated/HRS-3-0420.html

Hanging and operation of the reel itself I have figured, and ducting I have figured as well. What I am getting a little worried about however is the fan. I'm kinda at a loss about what the right kind of fan I need and what safety requirements I'm gonna have. My idea is the reel will hang at approx 8' off of the big main beam in my steel building. Then I'll run a duct to the ceiling or side wall assisted by some sort of booster fan.

Has anybody done anything like this before that can point me in the right direction? Do I need to find some ridiculous expensive explosion proof deal? Do I even need a fan really (I assume yes).

Any help is appreciated.

 

[imagineer]

When I was trying to tune a Jeep in the middle winter and didn't want to keep the barn slider open, I opted to run a 4" dryer tube from the Jeep exhaust to my dust collector, and let the collector pull the fumes out. I should point out that the dust collector did not use any filters and discharged to the outside. It's the type that sits on top of a 55 gallon drum.

Seeing as it worked fine for my application, I'd say the type of impeller fan used on dust collectors is a viable solution.

 

[BillK]

Why not just get the correct one from the company who makes the hose ? I looked at your link and they have several.

 

[Jbullfrog]

I have a Harvey Exhaust system in my shop. The 5" drops go up thru the ceiling and into a trunk line. It steps from 6" to 10" going to the blower, and has a 12" pipe from the fan to the outside wall.

 

[Chuckster in NJ]

Check the manufacturer for the proper model fan or you can also check GRAINGER for a "generic" fan and adapt it.

 

[PoorUB]

One issue to keep in mind is obviously exhaust is hot and most fans are no up to the task of dealing with the heat. Fans designed for exhaust removal are.

 

[inphx]

And a mis tuned engine can be carrying combustible air mixture - so i wouldn't dual use a dust collector fan and the right fan is likely spark isolated, has some anti static design or may be brushless.

 

[PoorUB]

And a mis tuned engine can be carrying combustible air mixture - so i wouldn't dual use a dust collector fan and the right fan is likely spark isolated, has some anti static design or may be brushless.

Brushless? Show me a larger brush type motor, other than a hand tool, that is common and in current production.

I wouldn't be concerned at all about a combustible mixture either. The odds of it hapening are slim.

 

[Walkers]

Why not just get the correct one from the company who makes the hose ? I looked at your link and they have several.

My guess on the price for the Fumeavent fan is $1975.00. When you call and ask for a price and they tell you they will have a salesman come out and asses your needs, chances are that it is not going to be cheap.

 

[jeepxj]

go to your local HVAC place and ask to check their junk pile out back. find yourself a metal squirrel fan and fab up a box/connection.

 

[Noltz]

Specs on their website say ½HP, 350CFM. 4" inlet. My worry is unburnt fuel in the exhaust hitting a spark in the fan motor.

What I've seen done in a few hobby shops is repurposing a furnace blower chamber section with a sheet metal box ducting the fumes outside. Expanded steel on the outside for critter control, turning the blower on evacuates the smoke of burning off suspension parts, etc pretty quick. I haven't seen one ducted to a exhaust reel, but again some duct work on the intake side, why not?

 

[Jbullfrog]

The fan on my Harvey system has the shaft thru the enclosure and is belt driven. The system is sealed form the drops in the ceiling to the louvered cover on the outside of the building.

 

[nadogail]

I would have the motor that spins the fan isolated from the shop exhaust; the probability of the airstream being ignited by the motor is slight; but it does exist.