Vertical Flow Laminar Flowhood
Posted 09 December 2006 - 03:51 AM
Posted 09 December 2006 - 11:20 AM
Spring return Damper, motorized
CO2 controller and relay
also using a 12*12*6 HEPA Filter 99.99% eff
and a 525 cfm blower...is that too big of a blower for that filter size?
Posted 09 December 2006 - 11:27 AM
i would not use plywood though.
for the money/time you're investing
a few bucks more for good wood is worthwhile, imo.
Posted 09 December 2006 - 11:30 AM
Posted 09 December 2006 - 11:34 AM
just not the best.
might want to cap the ends of the plywood with formica strips,
as years pass by humidity can cause the plywood layers to
separate and then the exposed glue can breed microbes...
Posted 09 December 2006 - 11:40 AM
should i just use ducting or some other material other than wood?
Posted 09 December 2006 - 11:54 AM
but for that FAE system i reckon metal duct would work very nicely.
Posted 09 December 2006 - 12:06 PM
Posted 09 December 2006 - 05:08 PM
The bottom still needs the pexiglass front. It ready to go, just need to screw it in.
The middle pic is a pic of a peice i put in so that the fan doesn't directly smash air into the filter, but instead hits the plate and creates a positive pressure chamber.
Posted 10 December 2006 - 08:39 PM
I let it run, the injected 9 rye jars, i kept them open for 10 seconds each to see if they get contaminated. The window may have been sucking air in, so who knows. No big loss.
Posted 11 December 2006 - 10:29 AM
box in and extend the work area
Posted 11 December 2006 - 11:11 PM
I suck at visualizing stuff like this, but I'm thinking I see a smallish rectangular hole allowing the air pressure to move between the blower area and the filter. Am I seeing it right?
Posted 12 December 2006 - 11:11 AM
i am going to make a larger flowhood now, this was just practice and for small agar work. I may extend its size though, i was thinking just several inches would do me for now.
Its not bad though, i stack the jars and i can easily fit about 12 in with enough room for me to work. 1 only make 8-10 jars at a time anyways. Also its mostly for agar work and there is plenty of room for pouring and clone work.
Posted 12 December 2006 - 12:44 PM
Posted 12 December 2006 - 01:33 PM
I as well am having trrouble visualising how this thing is set up. It apears very odd. It should be from top to bottom pre filter at the very top, then blower sitting through a peice of wood, then a plenum of about 10" or so, then the hepa and thats it. Im not sure what the extra holes in the side are for? Maybe some better pictures are in orer.
that is exactly how it is. prefilter top, then a blower, which is mounted on a board, then a 10" plenum, then the filter.
There were 2 holes:
A) on the side where the hepa slides in, that was sealed with a ring of caulking around the hole and a peice of plywood.
b)The hole in the front, is to allow the blower to fit. It still needs to be sealed. It is there because the measurments were off. I forgot to allow for the rubber feet that attach the blower to the back wall, so it doesn't vibrate. this hole does not really effect the performance of the system since it isn't even sucking in air. The air intake is to the side of it and pulls air down from the top.