Great topic about air flow and cooling so I figured I'd post about my plans here.
As I prepare for summer, I need to figure out what to do with all my rigs. I'm at around 16kw right now, but anticipate being well above that by the time summer (and heat) rolls around.
My plan is to get a 40' shipping container (about $2,000 delivered) and ask if I can get it in white. If not, I'll have to paint it myself.
I plan to install 3 10,000 CFM 36" exhaust fans, evenly space along the top, along one of the long walls.
These guys:
https://www.northerntool.com/shop/tools/product_200422375_200422375Full specs here:
https://www.jdmfg.com/wall-master-exhaust-fanThey are very efficient and move about 20 CFM per watt.
On the opposite long wall, I'll cut out 6 24x24 inlets, evenly spaced along the bottom. My mining racks will then go right down the center with a 36" isle on either side.
A 40' container is about 3,000 CF, so 30,000 CFM should be able to replace the air volume 10 times a minute. That would be enough draft I would think, that I would not have to worry about any additional cooling, even when it is 100 degrees outside and the sun is baking down on top of the container.
Good idea or bad idea?
Great idea. I know a group running ~100 cards in a 20' container (with room for more) and can't see any reason it wouldn't scale up.
They removed a section of side wall and fabricated some louvre panels with filters for the intake and mounted big 3-phase exhaust fans in the roof (not sure of cfm specs).
Their container is a red/orange colour and has stayed relatively cool on ~90˚F days.