Upgraded from the purple 8 inch to the 14 inch Can Fan Max and the larger return grill inside the data closet.
https://www.youtube.com/watch?v=4DxbWXo4dF4I held them up side by side for you to see the difference. The 14 inch has 1820 CFM and the 8 inch has 720 CFM. So, I more than doubled the suction. Now, it really is a serious wind coming through the 16" x 25" filtered grill I have in the closet door. The air is coming through it BIG TIME. It will blow my shirt over my head if I do not tuck it in my pants. The 14 inch Can Fan Max is sucking air through the vented door that hard.
I thought I would try it for an hour without the AC I installed turned on. Temperatures from rig to rig range from 36 to 41 WITHOUT the Air Conditioner on. I'm sure I may need to turn on the AC in the summer time.
This should be plenty of suction now for when I add eight S4's to this closet. Just thought I would share this in case anyone thought about putting their rigs in a small space in their home.
I will end up with 8 S4's and 16 S3's when its all done. A total of 23.2 Th/s.
Don't mind the mess. I'm still remodeling the downstairs. I need to put some base molding at the bottom of the walls. I also need to finish grouting the tile in the data/mining closet.
In this picture you see the 8000 BTU air conditioner I installed and it is on. This closet is only 122 Cubic Feet. The 8 inch exhaust fan had 720 cubic feet per minute (CFM) of suction but needed help with the Air Conditioner I installed. That 720 CFM was not enough suction for the heat being generated by the rigs. I could not imagine what the heat would be like once I add eight S4's to this closet. That's why I installed the 14 inch 1820 CFM exhaust fan. I can have it going without the AC on and the temperatures are acceptable to me with the door closed [36 C to 41 C in each S3's "miner status"].
In this picture you see the 8 inch diffuser on the back wall near the ceiling that used to be installed for the 8 inch exhaust fan. That was recently replaced with a 16 inch filtered return grill that you see in one of the first pictures above.
This is a picture from the back side of the closet in the garage when I had the 8 inch Hyper Fan 720 CFM. It has since been replaced with the 14 inch Can Fan Max 1820 CFM
I've allowed for 3 inches of clearance between the wall and the back of the 20 inch shelves to allow power cords or any other cords to pass through.
This is a picture of the vertical 1.5 inch PVC pipes with elbows installed on the garage wall adjacent to the data/mining farm closet. You see them just to the right of the 6 feet latter.
This is a picture of when I cut eight 17 feet runs of wire outside in the driveway for the data/mining farm closet before install.
This is where my rigs were downstairs just to the left of the closet I have them in now. My wife was complaining about the heat and the noise. So, I had to come up with something.