[Clayart] ventilation/filters/Particle sizes

Bryan Johnson bryj at cheqnet.net
Tue Jul 19 07:46:51 EDT 2016


Heat recovery ventilation might be a good option. There are air to air heat
exchangers and and heat pump systems.

I use an air to air heat exchanger,

Bryan Johnson

On Mon, Jul 18, 2016 at 2:02 PM, jonathan byler <jebyler2 at gmail.com> wrote:

> Thanks for this info.  My project manager/engineer is going to talk with
> the guy designing the system re: these concerns, and hopefully they will
> then just exhaust everything outside and save us the trouble of worrying
> about what is still floating inside after the filters.  I was thinking that
> some sort of water bath filtration system would be the ultimate, but
> ridiculously problematic to maintain.
>
>
>
> > On Jul 15, 2016, at 7:35 PM, Robert Harris via Clayart <
> clayart at lists.clayartworld.com> wrote:
> >
> > Agree with everything Tommy says. In particular I would recommend some
> sort
> > of multi-stage filtration system so it doesn't get clogged up (preferably
> > with the first couple of stages easily washable).
> >
> > In terms of the finest particles size ... as Tommy says get the finest
> > filter you can. Unfortunately it is the particles under 10 microns in
> size
> > that cause silicosis. 1um seems to be the lower limit, although I
> couldn't
> > find any good references for this (just the OSHA PDF in the link below)..
> >
> > More importantly NIOSH regulations stipulate 0.1 mg SiO2/m3 upper limit
> for
> > an 8 hour workshift. This number is only applicable to respirable (i.e.
> > under 10u) amounts of crystalline silica.
> >
> > Not sure if that helps or not ...
> >
> > See this OSHA PDF
> >
> > http://osha.oregon.gov/OSHAPubs/3301.pdf
> >
> > On Fri, Jul 15, 2016 at 12:09 PM, Tommy Humphries via Clayart <
> > clayart at lists.clayartworld.com> wrote:
> >
> >> First off you need to determine just how much dust Is actually in the
> air.
> >> This will determine what capacity filtration you need. If you have a
> very
> >> dusty environment you will need a higher capacity  filter, or you will
> be
> >> changing it weekly, or even daily.
> >>
> >> Multi stage filtering will be the way you want to go, removing the
> larger
> >> particles with less expensive filters before the air reaches the
> expensive
> >> hepa filters. 3 stages is usually sufficient.
> >>
> >> As for filtration size, it would be wise to get the finest that your air
> >> handler can pull through. The finer the filter the harder the fans have
> to
> >> work.
> >>
> >> Tommy Humphries
> >>
> >> Sent from my iPhone
> >>
> >>> On Jul 14, 2016, at 2:26 PM, jonathan byler via Clayart <
> >> clayart at lists.clayartworld.com> wrote:
> >>>
> >>> Hi All,
> >>>
> >>> We are getting a new dust collection system for our clay and glaze
> >> mixing areas, and I have a few questions:
> >>>
> >>> I’m compiling a list of materials used and particle sizes to give to
> the
> >> engineer.  I’ve been looking at MSDS sheets and Digitalfire’s materials
> >> database for info, and was wondering if any of our experts have
> anything to
> >> add.  The smallest particle size i’ve seen so far is listed as 0.2
> micron,
> >> and I’m wondering if we need to get filters that can filter smaller
> sizes
> >> than that?  In order to keep heated and cooled air in the building, they
> >> want to exhaust the units back into the conditioned space.
> >>>
> >>> Any input especially into potential pitfalls we might run into would be
> >> most welcome.
> >>>
> >>> Thanks,
> >>> jon
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> _______________________________________________
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> >>> Clayart at lists.clayartworld.com
> >>> http://lists.clayartworld.com/mailman/listinfo/clayart
> >>>
> >>
> >>
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> >>
> >
> >
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