Shop Vent System

[porschedude996TT]

Hello all,

I plan to incorporate a fume venting system that would pull air from within the shop and dump it outside and down wind. The fumes would mostly be car or motorcycle exhaust or just plain hot air on a hot day. I found a 600cfm in-line vent fan (8" duct) and plan to use flexable HVAC ducting, a draft damper, and exit a false gable end grill. The shop has a vaulted ceiling and I plan to put the system inlet grill in the ceiling close to the ceiling peak and the outlet on the downwind gable end.

Anyone have any ideas to improve or has someone done this???

cheers, K

 

[Torque1st]

There was a thread some time ago on vent fans for the shop and how to cover them. I think someone had one built in a cabinet so they could close the doors. There was also a thread or two recently on spray booth venting.

 

[saumon]

A wall-mouted fan like they use in farms is hard to beat. Super heavy duty (can run 24h/day, like they do in henhouse or pigsty), high output (1100 to 4100 CFM) and available in a wide range of size (14 to 24 in., to fit between studs) at any farm equipement store. Also easy to retrofit: simply cut a square hole in the wall and bring a wire. They come with shutters.

http://www.tractorsupply.com/webapp/wcs/stores/servlet/ProductDisplay?mpe_id=12075&cm_cr=No+Campaign-_-Web+Activity-_-Cross+Sell+Up+Sell-_-ProductDetail_Espot1-_-MaxxAir+Heavy+Duty+Exhaust+Fan+with+Integrated+Shutter%2C+24+in.%2C+1%2F3+HP&catalogId=10001&productId=35422&evtype=CpgnClick&intv_id=15001&langId=-1&storeId=10551&ddkey=http:CatalogSearchResultView

 

[kbs2244]

One of those wind powered turbine style roof vent would work without the need for power.
You would need to put a hole through the roof though.

 

[Jude20VT]

I installed two attic gable fans in my garage to help circulate the air in the summer. The first one pulls outside air into the garage through a large gable vent that is routed into the garage. The second fan pulls the air out of the garage and into the attic. Most gable fans come with a thermostat to turn on/off as needed. I eliminated one of the thermostats and wired them together. Both vents have metal louvers that open and close with the units (Home Depot) to help reduce the winter cold air from entering.

Started with an idea to have a single fan in the ceiling that would pull air from a gable vent on the opposite side of the garage. The single fan was not pulling enough air through the vent. This created a draw on all the doors making it hard to open the interior door. To eliminate the draw, I replaced the gable vent with a larger one and installed a second gable fan in reverse to pull outside air into the garage.

Creating an attic opening for fire to enter was a concern. The fan motor is rated to shut off around 250 degrees. I installed a “Firestat” from Grainger between the metal louvers and the fan. It is set to shut off power at 160 degrees, which should shut the louvers to help slow down a fire.

Looking back at the added cost over my original single fan idea, I should have just cut a hole in the wall and mounted a window air conditioner. Live & learn.