HI, DOES ANYONE KNOW HOW TO MEASURE THE AIRFLOW IN A BOOTH? IS THERE AN EASY WAY?
THANKS GUYS
SPRAY BOOTH FLOW
9 posts
• Page 1 of 1
Fully Engaged
Posts: 290
Joined: Sun Jun 05, 2005 4:07 am Location: SYDNEY AUSTRALIA |
splash it on!
|
there's a meter you can get to measure it.
|
|
Whats the CFM flow of your fan?
"The number of parasites in the USA has now eclipsed the number of productive members of society"
Capt Rick Hiott. www.reelfishhead.com |
|
* Banned *
Posts: 142
Joined: Wed Jul 06, 2011 8:45 pm |
I AM GUESSING WE ARE IN YOUR PAINTING BOOTH, WHICH IS WHY WE ARE YELLING, SO WE CAN HEAR EACH OTHER OVER THE HIGH WINDS! ANYWAYS, I WOULD SUGGEST GETTING AN ANEMOMETER FROM EBAY! THE CHEAPEST ONE I SAW WAS FOR LIKE $16! HOPE THAT HELPS! |
You can calculate it by the above but you would also need to know some other factors. These formulas are meant to help calculated needed airflow but can be used to figure out what you have as well. Just plug in the numbers you know like CFM output of fans, booth volume (width x length x height), squared footage of exhaust filters, etc. Scenario #1 - Air moving from ceiling at back of booth to the exhaust filters at far end of booth. Based on these assumptions: Surface area (ft2) = 4.4m (wide) x 2.2 m (high) x 10.76 (m2/ft2) = 102.4 ft2 Air velocity = 102.4 ft2 x 100 ft/min = 10,240 ft3/min Scenario #2: Air entering at ceiling and moving downward toward the filters immediately above the floor along the sides of the booth. Based on these assumptions: Surface area (ft2) = 6.6m (long) x 4.4m (wide) x 10.76 (m2/ft2) = 312.5 ft2 Air velocity = 312.5 ft2 x 50 ft/min = 15,625 ft3/min 1968 Coronet R/T
ACTS 16:31 |
|
If you know the square footage of your booth,,there is a formula you can use to figure out what size CFM fan you need.....................
"The number of parasites in the USA has now eclipsed the number of productive members of society"
Capt Rick Hiott. www.reelfishhead.com |
|
Top Contributor
Posts: 1665
Joined: Mon Oct 04, 2010 11:31 pm Location: Northeast Country: USA |
Most garages we built were 12'x18', with walls approx. 9' 6" high, and approx. 12'-13' height at the ridge. So if you could make a ceiling, whether permanent or temporary at approx. 7.5' high, (Shouldn't need more that that), in a garage that size, you'll have a volume of 12'x18'x7.5'= 1620 cu. ft.
Take into account resistance from filters. You could get gable fans or hot air/AC units that will change the air in an area that size, every 1.5-2 min. If you want to change the air faster, use two fans. Two new 1500 cfm gable fans will cost about $165-$170 including tax from Home Depot and will change the air in less than a minute. You could probably buy them used for under $100. Bear in mind, with air flow like that, you'll have to make a solid effort to keep the area dust free. |
The CFM of the spray booth can be determined by multiplying the average air speed (feet/min) through the filters by the area of the exhaust filters (ft2). The air speed can be determined with an anemometer. Using the anemometer, measure the air speed just in front of the exhaust filters. Select multiple measurement points evenly spaced across the exhaust filter wall. The more points you pick, the more accurate the estimate of average air speed will be. Average the air speed measurements and multiply that value by the open area of the exhaust filters.
|
|
Settled In
Posts: 86
Joined: Mon Sep 12, 2011 10:50 am Country: USA |
call a local supplier or installer they have a meter they can check it with MAKE sure you have an average size car in the booth when they do it it does matter i have proved it. Then if it needs adjusted they can change your pully's or if you have dampners they will show you how to adjust them and remember it will change as your filters get dirty.
|
9 posts
• Page 1 of 1
Who is online
Users browsing this forum: No registered users and 31 guests