Re: Robust Skillhouse Ventilation, a Must
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Brian Bartholomew
Dec 6, 2017, 6:46:04 PM12/6/17
to Gainesville Hackerspace
> It should be easy to create one or more main exhaust runs
Attached to the center wall so the total pipe length is minimized, and
we don't disturb the ceiling.
> and tap off it to remove solder smoke, 3D printer fumes, CNC dust,
> etc., and possibly the laser cutter hot air removal.
If we use metal singlewall duct for heat resistance, we could probably
put everything through a single dust collector, if the dust collector
filter bag/hood vents outside. Maybe put that inside a metal drum?
> I recognize that some of these things may require a comparatively
> precise amount of air for cooling or to not disrupt the manufacture
> process.
Adjustable blast gates at each station. Usually closed to save flow
for active stations.
Brian
Attached to the center wall so the total pipe length is minimized, and
we don't disturb the ceiling.
> and tap off it to remove solder smoke, 3D printer fumes, CNC dust,
> etc., and possibly the laser cutter hot air removal.
If we use metal singlewall duct for heat resistance, we could probably
put everything through a single dust collector, if the dust collector
filter bag/hood vents outside. Maybe put that inside a metal drum?
> I recognize that some of these things may require a comparatively
> precise amount of air for cooling or to not disrupt the manufacture
> process.
Adjustable blast gates at each station. Usually closed to save flow
for active stations.
Brian
Christopher Hoffman
Dec 7, 2017, 9:25:58 AM12/7/17
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Brian
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Mark Davidson
Dec 8, 2017, 4:36:52 AM12/8/17
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Just FYI, there are some requirements for this. This big one is not
to share exhaust systems for "dust" (e.g. CNC) with that which
produces heat/sparks (laser cutter). In principle, it can be done
but requires some specific spark arresters, etc.
Mark
Mark
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Brian Bartholomew
Dec 8, 2017, 10:36:23 PM12/8/17
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I had assumed that, 15 feet of metal duct amounts to the same ignition-source
cooling function as the more formal versions, and so we can dump everything
down on top of the wood dust in the bag. I'd be very interested to learn that reality
is not so convenient.
Brian
cooling function as the more formal versions, and so we can dump everything
down on top of the wood dust in the bag. I'd be very interested to learn that reality
is not so convenient.
Brian
Eddie Reid
Dec 11, 2017, 11:03:45 AM12/11/17
to gainesville...@googlegroups.com
Thoughts on ventilation, I was thinking about this and having the
ventilation dump outside is a great idea, if the motor and the dump are
outside the noise and dust will not bother anyone inside.
There are two additional aspects that I think need to be address, first
some kind of bag full detector that prevents the dust collector from
coming on and ideally prevents the tools from coming on as well.
The second is by having the dump outside it will create a vacuum in the
space when running, which will cause an influx of air around every
opening in the space like doors. This is not the ideal source for adding
air to the space, it will bring in dirt, dust and possible toxicins in
the area. So I would suggest that we also incorporate some kind of dust
trapping air inlet high on the wall (minimize ground dust) near where we
bring out the dust collection pipe.
Ideally a double walled pipe could be use to provide the inlet air near
the dust pickup point, this would minimize the loss of conditioned air
from the space saving on electric bills.
Just my thoughts.
Eddie
On 12/08/2017 10:36 PM, 'Brian Bartholomew' via Gainesville Hackerspace
wrote:
ventilation dump outside is a great idea, if the motor and the dump are
outside the noise and dust will not bother anyone inside.
There are two additional aspects that I think need to be address, first
some kind of bag full detector that prevents the dust collector from
coming on and ideally prevents the tools from coming on as well.
The second is by having the dump outside it will create a vacuum in the
space when running, which will cause an influx of air around every
opening in the space like doors. This is not the ideal source for adding
air to the space, it will bring in dirt, dust and possible toxicins in
the area. So I would suggest that we also incorporate some kind of dust
trapping air inlet high on the wall (minimize ground dust) near where we
bring out the dust collection pipe.
Ideally a double walled pipe could be use to provide the inlet air near
the dust pickup point, this would minimize the loss of conditioned air
from the space saving on electric bills.
Just my thoughts.
Eddie
On 12/08/2017 10:36 PM, 'Brian Bartholomew' via Gainesville Hackerspace
wrote:
Mark Venzke
Dec 11, 2017, 11:56:33 AM12/11/17
to Hackerspace
Fellow Hackers,
I have an ozone generator. Ozone as many of you know deodorizes and disinfects.
I would could treat the air and HVAC system surfaces of any new space that may become the new space once or periodically in exchange for a membership.
Mark Venzke
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Brian Bartholomew
Dec 11, 2017, 4:23:27 PM12/11/17
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Outside is residential and presumably sensitive to air compressor and
dust collector noise, especially outside daylight hours. Thus,
whether the air compressor and dust collector are inside or outside,
the enclosure has to be insulated against noise.
Outside adds the additional challenges of rain-proof, theft-
resistance, good appearance, and resistance to rust from humidity.
Inside adds the additional challenges of airproofing...something. The
laser cutting fumes that exit the dust collector filter hood have to
be additionally contained in an airproof something so they are then
piped outside. Maybe remove the filter hood, put a plate there with a
duct fitting, and exhaust the fine wood dust outside?
If noxious fumes from laser cutting are to go through this system,
then makeup air shouldn't come from near exhaust. Makeup vent should
be on the other side of the building.
Maybe detect bag full and other fault conditions with a pressure or
flow measurement, handwave about what or where.
Brian
dust collector noise, especially outside daylight hours. Thus,
whether the air compressor and dust collector are inside or outside,
the enclosure has to be insulated against noise.
Outside adds the additional challenges of rain-proof, theft-
resistance, good appearance, and resistance to rust from humidity.
Inside adds the additional challenges of airproofing...something. The
laser cutting fumes that exit the dust collector filter hood have to
be additionally contained in an airproof something so they are then
piped outside. Maybe remove the filter hood, put a plate there with a
duct fitting, and exhaust the fine wood dust outside?
If noxious fumes from laser cutting are to go through this system,
then makeup air shouldn't come from near exhaust. Makeup vent should
be on the other side of the building.
Maybe detect bag full and other fault conditions with a pressure or
flow measurement, handwave about what or where.
Brian
Joseph DiPietro
Dec 11, 2017, 4:40:26 PM12/11/17
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There are two of these vents on the south side of the building. We can run vent pipes out and up to roof level.
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