Fan Placement

[bookman51]

I tried doing a search on this thinking surely someone has asked this question before, but I did not find anything on this forum.

I want to put some ceiling fans in the shop part of my 40' x 72' pole building. The shop part is 40' x 32'. The rest is storage for equipment and closed off. I have installed a couple of 5000 watt heaters (one on each side about 14 feet up) in the shop part to take some of the chill off (plus I have a 100,000 BTU salamander heater for serious cold).

My question, any guidance as to where to install the ceilin fans in relation to the heaters? Directly in front...to the side...how far away...? And how many?

I am looking at the CanArm industrial fans sold by FarmTek. They have 56 and 60 inch ones. The 56 look like it can move 27,500 cfm and the 60 looks it can move 46,000. Anyone with experience with them?

One controller can control 4 fans and can reverse the fans.

I want the fans to move the air to cool in the summer and then to bring the warm air down from the rafters (not an enclosed ceiling) in the winter.

Anything I am missing or not thinking of?

Thanks in advance

bookman

 

[Charles (in GA)]

THIS THREAD discusses the 60" Home Depot Industrial 3 blade fans.

HERE is my post in that thread where I installed these fans in my 60x60 steel building with 21 ft roof peak.

My personal feeling is to mount the fans down the middle of the building (following the peak) and since there is no ceiling and it sounds like the rafters are rather high, I would mount them just below the bottom of the trusses/joists. Do not worry about mounting them in front of heaters, etc, just let them pull the hot air down from above and blow it to the floor.

Charles

 

[kbs2244]

As high as possible to push the hot air down.
Evenly spaced down the centerline of the ridge.
No need to be on high speed.
I never take mine off low.
No walls will let the air mix well.
Keep them turned on all the time.
You will get a circulation pattern going that will stand up to occasional disturbances like open doors.
I have installed less than $20.00 window fans like this that are still going after 5 years.

 

[bookman51]

Ummm, Given what is said maybe I need to install some circulating fans up in the rafters near the centerline of the ride, perhaps in addition to some ceiling fans.

Thanks

Bookman

 

[Charles (in GA)]

Ummm, Given what is said maybe I need to install some circulating fans up in the rafters near the centerline of the ride, perhaps in addition to some ceiling fans.

Thanks

Bookman

If the area is open, I would not waste the time. Don't know what pitch your roof is. If a real steep pitch, I suppose the fans could end up way below the peak, but I'd just mount them close to the joist and try them first. I think you will be surprised at how much air they move. I use the next to lowest speed in the winter. In the summer, I use high to push the hot air down, and with the buildings doors open on both ends, the breezes carry the hot air out and the whole building feels better inside. no broiler effect.

Charles