Spray Booth Ducting

[rjmack]

Glad the trip was not a total loss...

thanks

We have those in some of our airplane hangers. They are hung at 20' and they still have lots of glare. They are super bright, and meant to be hung high. I can't imagine what it would be like at 8 or 10'.

good point.

there seems to be a problem getting those higher wattage bulbs up here. i'll have to look into it a bit better tomorrow.

any thoughts on the best pattern to mount them? the 4 100w bulbs i already have mounted are on a roughly 1/3 1/3 1/3 pattern on each axis. the incandescents and booth lighting will be on different switched circuits. there will be 2-500w halogens above the work/mixing bench on their own circuit. compressor will be to the left of the bench as seen in the pic. gonna have to come up with some sort container to keep the compressor from kicking up a storm too i guess.

 

[ray66v]

I think the spacing you have now for the light could be fine, just screw them in. 4 of them in a room that size should be all you need.

I would not have the compressor in the same room your spraying in.

 

[hizoot]

I've found over the years that having light at a low angle helps me to see overspray,runs,etc. when I lay down the paint.So I put lights at about 6-7 ft up on the walls,as well as the overhead lights. If you look at the professional spray booths,you'll see they do the same.If you cant do that,then the next best thing is using the portable lamps and move them across from where your painting.

 

[ray66v]

I've found over the years that having light at a low angle helps me to see overspray,runs,etc. when I lay down the paint.So I put lights at about 6-7 ft up on the walls,as well as the overhead lights. If you look at the professional spray booths,you'll see they do the same.If you cant do that,then the next best thing is using the portable lamps and move them across from where your painting.

In a spray booth, because the size and proportions of the booth are close to that of a vehicle, most of the over head light is blocked from reaching the sides, by that vehicle. So, lights in the side walls are preferred. They are located low on the side walls, around 2-3 feet, because the distance from the sides of the vehicle to the walls, is usually barely 4 feet, and an automotive booth is usually under 9 feet high on the inside.

But, not all spray booths come with them. Having used a particular Canadian booth, which did not come with side lights, I can attest to the difficulty this system often creates.

If your just doing pieces, and parts, as he will be doing, (he can't get a car in there), plenty of light will reach the side walls, which will reflect on to the parts, so this will not be a problem. And, it never was a problem doing pieces and parts, in the booth with ceiling only lights.

There is no such thing as too much light in a spray booth. But, a lot of strong light can create glare, which will produce unintended difficulties. If a bright light is behind the object your trying to see, then it can become more difficult to see it well.

I don't think he will need side lights in this case, with 4 giant CFL's he will have 1200 watts of light. That's a lot of light bouncing around in a small space. I have 10 of them in a 30x30 shop, and it's very well lit.

 

[rjmack]

good grief.

evidently those big bulbs are not csa approved, thus cannot be sold in canada.

csa will accept them if the manufacturer has the bulbs ul-c rated. i phoned tcp to see what the situation was, but they are closed today.

the problem is, if the place burns down and has non-rated appliances, including lights, no insurance coverage. i phoned csa and the woman told me about people buying things like hot tubs from ebay, shipped from the states, that were not csa or ul-c and when it came to installing them the electrician wouldn't do it... against the law... so the buyer ends up eating them.

will these bulbs screw into a regular light bulb socket?

btw, thinking about putting up some thin sheathing, painted white, on the ceiling.

 

[crbr]

Informative thread.... thanks all.

 

[philbuilt]

Hi rjmack
Here's my thought and experience. First the exhaust of the space needs to
Pull from the bottom. I suggest using 8" stove pipe running on the floor
The full length of the building both sides. Hole saw 2" holes every 6" the length of
The pipe . This will allow for even evacuation of the space. Remember the VOC s stay low
and need to Be evacuated. Ceiling mounted fan won't do that. This will also allow for
Your intake to come from the eves creating a down draft system.
As far as the lighting the bulb or lamps should not be in the room. I would
Install 4' T8 or T5 fixtures above the ceiling between the trusses and put clear lean lens below
That can be removed for service.
Phil

 

[Gator6x4]

Light and air flow for a paint booth. Paint Booths are difficult to construct and build. View this video: Auto Painting : How to Build a Car Paint Room - YouTube

 

[ray66v]

good grief.

will these bulbs screw into a regular light bulb socket?

Yes, they will thread into the standard medium base porcelain sockets you have.

The whole csa, ul-c thing is unbelievable. Surely one of the manufacturers of giant CFL's has Canadian approval???

 

[ray66v]

My bulbs are TCP #28968.

This PDF indicates they have a c-UL-us approval, which I believe means your good to go.

http://www.tcpi.com/PDF/2219_42865 TCP 289 Series High Watt SS_pub_0002.pdf