@philipma1957 thats an excellent picture and yes its pitched like that but less of a slant around 50% less slant
I cant risk any gap under the garage door because of the sound of the miners fans and all, Its alreay loud as hell outside with only 10 or so rigs and my goal is for
a bunch of Asics and some more rigs so the less sound the better since this area is residential and metal thieves everywhere here
acording to your picture I can go with six of those fans three on each side at the angles you propose for a total of 9000CFM and maybe skip the space under the door ?
you can see that ugly ass mast in the back
here are some more pics of the build
600 amp service
3 200amp panels (partially filled with 30amp 240V
12 30 amp power receptacles (lp-30)
thanks
okay you can have passive vents for intake on the roof
top view of roof
** fixed images
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fan
fan intake
fan
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fan intake
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SO with the amount of power you want you may need 9000 cfm
I use 3200 cfm for 10-13kwatts in the summer it is barely enough
Ahh very smart man Genius, I could even use low cost supply vents right instead of passvive for intake maybe ? to help move the air along better ?
here are some supply vents that are gravity based
https://www.zoro.com/dayton-gravity-roof-vent-26-in-sq-base-2rb71/i/G3096956/maybe one or two of those and as a backup if we are not gettiing enough SP or air flow two of these
** edit removing this one its at 27 sones !! , two of the 14 inch ones are 7.5 sones each sound wise and add up to the same CFM so much better
** these are also downblast supply so I think these are filtered air , most downblast exhaust fans like the ones used on restarurnts filter outgoing air
so I sounds to reason these should too
***
removed this one too loud
https://www.zoro.com/dayton-supply-vent-18-in-4yc58/i/G1196781/
those suppluy fans seem quite powerful 3600 or so CFM they might be to loaud for my build
maybe a 14 inch unit or two but the CFM dropps a ton down to 1600
https://www.zoro.com/dayton-exhaust-vent-14-in-4yc89/i/G1750926/Removed as well too loud 19 sonnes
heres a better one
https://www.zoro.com/dayton-supply-vent-16-in-4yc56/i/G0789792/ 16 inch $200 cheaper 2300 cfm