Bev Lev on sat 22 dec 01
Hi Everybody! Happy Holidays and a good year ahead to all.
Sorry if I am being obtuse but having reviewed the archives on
building a spray booth I feel like I have less clarity rather than
more. Welcome to clay... the never ending challenge!!!!!
Building the booth itself does not seem to be complicated, it is the
placment of fans and venting that has me perplexed. If anyone has
some simple plans that would be very helpful. I guess I am trying to
understand where I am supposed to position the fan, filters?, and
about venting to the outside.
I am about to have a hole made in the wall of the building (formerly
a security company and the place is built like a fortress) in order
to connect my recently purchased enviro-vent. If i am going to build
a spray booth is there a way ie. a Y joint that would allow me to use
the same exit duct without getting a back wash of glaze particles
blown into the ducting of the enviro-vent? Am I totally out to lunch
with this idea altogether? Should I keep both far away and
independant of each other and have 2 holes cut into the building?
I also wondered about another (probably out to lunch) idea. They have these
dryer venting kits that vent into a vessel of water rather than venting to
the exterior. Could this be rigged for trapping glaze material?
Any input would be helpful. If anyone can suggest references for
reading that too would be great.
Thanks alot
Bev
Dave Finkelnburg on sun 23 dec 01
Bev,
Keeping the two vents separate would be best, if you can do it.
Using the water trap is a good idea, but the booth should still be
vented outside. That way when you do get particulate carryover it won't be
floating around in the studio.
The following is for a rectangular booth.
Location of the filter(s) depends on whether you want to vent out the
top or out the back of the booth. For out the top venting, put the filters
at a 45-degree angle across the top back corner of the booth. For out the
back venting, install the filters vertically at least 3/4-exit duct diameter
from the back wall.
Ideally, the booth will be 2-feet wider (W) and 2-feet taller (H) than
the pieces you plan to spray. Air flow through the booth should be
approximately 125 cubic feet per minute per square foot of open area. A
baffle holding the filters should be at least 0.4 x W x H. Duct velocity
should be approximately 1,500 feet per minute.
These recommendations are from the 15th edition of "Industrial
Ventilation," a manual of recommended practice published by the American
Conference of Governmental Industrial Hygienists.
I hope this helps.
Dave Finkelnburg on a delightfully sunny, snowy winter day in Idaho
-----Original Message-----
From: Bev Lev
Subject: yet another spray booth question
having reviewed the archives on
>building a spray booth I feel like I have less clarity rather than
>more. Welcome to clay... the never ending challenge!!!!!
>
>Building the booth itself does not seem to be complicated, it is the
>placment of fans and venting that has me perplexed. If anyone has
>some simple plans that would be very helpful. I guess I am trying to
>understand where I am supposed to position the fan, filters?, and
>about venting to the outside.
>
>I am about to have a hole made in the wall of the building (formerly
>a security company and the place is built like a fortress) in order
>to connect my recently purchased enviro-vent. If i am going to build
>a spray booth is there a way ie. a Y joint that would allow me to use
>the same exit duct without getting a back wash of glaze particles
>blown into the ducting of the enviro-vent? Am I totally out to lunch
>with this idea altogether? Should I keep both far away and
>independant of each other and have 2 holes cut into the building?
>
>I also wondered about another (probably out to lunch) idea. They have
these
>dryer venting kits that vent into a vessel of water rather than venting to
>the exterior. Could this be rigged for trapping glaze material?
Martin Howard on mon 24 dec 01
vented outside. That way when you do get particulate carryover it won't be
floating around in the studio.>
If the vent leads back to the inlet of the compressor, via a suitable trap,
you then save the particles hanging in the air, but also save the heat of
your studio being vented outside.
Martin Howard
Webbs Cottage Pottery
Woolpits Road, Great Saling
BRAINTREE, Essex CM7 5DZ
01371 850 423
martin@webbscottage.co.uk
http://www.webbscottage.co.uk
Updated 13/12/01
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