What kind of heat load are you planning on putting into that closet?
It's actually what kind of heat load am I taking OUT OF the closet?
Either or. It'll all balance out eventually.
I'm going to order a Temperature/Humidity meter to mount on the wall in this closet from Amazon. Probably order it this evening. I'm curious what temperature it will remain consistent at during the winter in this 122 cubic feet closet.
Depends on how much power you're dissipating in the closet and the outside air temperature. If I read it right and you plan to have 11 S4s and 18 S3s in there, you don't have anywhere near enough ventilation in there. That's 20kW of power, and you're going to need way more air movement to keep temps down even if you have cold intake air.
720 CFM is a LOT of CFM's compared to the fans of the Antminer's. But yes, when I do have up to probably 6 or 8 S4's along with 16 S3's, I may need to add another Hyper Fan and another vent. We will know for sure after I have things in their running and a thermometer.
It's really not. I have a pretty similar setup to what you are doing, though I don't have as much gear.
https://bitcointalksearch.org/topic/m.7331966The two 20" fans are these ones, rated at 6800CFM. The window's been closed in so all the air through the fans is fresh from outside.
http://www.lowes.ca/portable-fans/utilitech-sfc1-500b-20-in-3-speed-high-velocity-fan_g1716654.htmlI'm pulling about 15kW, and seeing about a 20-25C rise in temperature from intake to exhaust with the two 20" fans.
Thanks for the info!!! Sorry it took a while to get back. I went back to Lowe's again [For a 4th time today] to get some L-Brackets. You will see the two L-Brackets underneath the piece of wood you see the Hyper Fan mounted to.
I've installed the 8 inch Hyper Fan:
I felt a LOT of air blowing out of the 14" x 6" vent on the bottom. However, it was blowing down to the floor. I decided to flip it upside down so the air blows up to the equipment when I put it in the closet.
I also believe I will need to install one more Hyper Fan when I add more S4's. The next Hyper Fan I get will be a 10 inch. I will also install one more 14" x 6" vent going into the garage AND one more 14" x 6" vent VERTICALLY to the left side of the closet door entrance underneath the light switch. That should bring in more cool air from the recreation room. The air feels pretty cool already coming from the garage through the present one I have already installed. Those two (2) fans and three (3) vents should be sufficient... I HOPE!!!
The reason I want my rigs in the closet is because I'm about to finish my recreation room. It's actually going to be my man cave with big screen TV. It's a 12.5 feet x 25 feet room. I have some french doors I need to install to the entrance of the recreation room. I have a big leather sectional that can seat 11 people to put down there as well. I want to make it look nice but the miners would interfere with watching TV down there. I believe the noise will be fine with everything in the closet. If anything, it will be like white noise down there. It will easily be drowned out by the sound system when watching TV.