Vince Pitelka on thu 23 nov 06
Keith Arbogast wrote:
"> We work in a converted two car garage, 20 ft by 20 ft, with a 9 ft
> ceiling, and have a limited budget. Would an exhaust fan in a window
> be as effective in removing the dust-laden air from the studio? If
> so, about how many air changes per hour would be needed?"
Keith -
I am worried as soon as I read your words "dust-laden air." What are you
doing that is putting so much dust in the air? If you must do such
processes, you need to do them outside, or else build a proper spraybooth
where you can conduct dusty processes with the exhaust fan turned on. You
never want to be doing such dust-producing tasks in the studio, because even
if you are wearing a proper dust-protection respirator, you are depositing
dust on everything else in the studio, and the slightest air currents will
raise that dust back into the air, and you'll be breathing it.
The advantages of the ceiling--mounted air filtration systems is that they
circulate air inside the studio and thus do not heat up or cool down the
studio. An exhaust fan in the wall will do an even better job of removing
dust from the air, and it is very low maintenance, but the problem is that
you have to allow a louvered opening from the outside to let in "make-up
air" from the outside to replace whatever is being pumped out by the exhaust
fan. If it's hot outside, the studio gets hot. If it is cold outside, the
studio gets cold.
- Vince
Vince Pitelka
Appalachian Center for Craft, Tennessee Technological University
Smithville TN 37166, 615/597-6801 x111
vpitelka@dtccom.net, wpitelka@tntech.edu
http://iweb.tntech.edu/wpitelka/
http://www.tntech.edu/craftcenter/
John Rodgers on thu 23 nov 06
An exhaust fan will lower the pressure in the room and allow make-up air
to flood in and take the place of the dust laden air being exhausted. If
your source of make-up air is clean, you are in good shape, if not, then
you must filter the make-up air. But beyond that - and maybe more
important than all else, is to have a good cleaning program going. Keep
things wet, wipe down tables and surfaces with damp cloths. Never "dust"
with a dry rag or brush. Avoid sweeping the floor if possible. Use a
shop vac that has an exhaust connection that goes outside. . Mop the
floors regularly. I have put every thing min my shop up on wheels so I
can move things around easily - Maily to facilitate being able to open
the main door and use the water hose and pressure wash the floor more or
less, forcing all water out the door.
You might consider making a cleaning table that is a box, that has a
metal mesh as a table top, and a fairly strong squurrel cage type blower
mounted in it to draw the dust of cleaning down through the mesh and
blow it out through an exhaust hose.
Good Luck,
John Rodgers
Chelsea, AL
Keith Arbogast wrote:
>
> On Nov 21, 2006, at 5:57 PM, Vince Pitelka wrote:
> As far as I know, the only HEPA ceiling-mounted filters that are
> appropriate
> for clay studio use are the ones sold by Bailey. You have to be very
> careful with such filters, because the air currents they produce can
> create
> more problems than any advantages offered by the filter. The Bailey
> unit
> seems to actually do what it promises.
>
>
> We work in a converted two car garage, 20 ft by 20 ft, with a 9 ft
> ceiling, and have a limited budget. Would an exhaust fan in a window
> be as effective in removing the dust-laden air from the studio? If
> so, about how many air changes per hour would be needed?
>
> Thank you,
> Keith & Jan Arbogast
> Bloomington, Indiana
>
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Keith Arbogast on thu 23 nov 06
On Nov 21, 2006, at 5:57 PM, Vince Pitelka wrote:
As far as I know, the only HEPA ceiling-mounted filters that are
appropriate
for clay studio use are the ones sold by Bailey. You have to be very
careful with such filters, because the air currents they produce can
create
more problems than any advantages offered by the filter. The Bailey
unit
seems to actually do what it promises.
We work in a converted two car garage, 20 ft by 20 ft, with a 9 ft
ceiling, and have a limited budget. Would an exhaust fan in a window
be as effective in removing the dust-laden air from the studio? If
so, about how many air changes per hour would be needed?
Thank you,
Keith & Jan Arbogast
Bloomington, Indiana
Bryan Johnson on fri 24 nov 06
Vince Pitelka wrote:
> An exhaust fan in the wall will do an even better job of removing
> dust from the air, and it is very low maintenance, but the problem is
> that
> you have to allow a louvered opening from the outside to let in "make-up
> air" from the outside to replace whatever is being pumped out by the
> exhaust
> fan. If it's hot outside, the studio gets hot. If it is cold
> outside, the
> studio gets cold.
> - Vince
> This is where a heat recovery ventilation system is helpful. Typically
> they recover 80-90% of the heat.The one that I use is a passive air to
> air heat exchanger in contrast to one of the fancier heat pump designs.
Bryan Johnson
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