Quote from: backspaceflip on June 07, 2017, 02:42:22 AM

Hi everyone! I need some help/advice. I have 13 Antminer S9s in a ~180sq ft room. The miners are on a 5 tier wire shelving unit. There are 4 miners on the first tier and 3 miners on tiers 2-4. Each miner pushes out air at about 250 CFM. The issue is that this makes the room very hot (which is bad for the other equipment in the room). The room temperature gets up to about 110°F with the miners on vs about 76°F with them off. The miners are about 12 ft away from a louvered (slotted) door that leads directly outside and the room is still getting too hot.

If the door is open and all of the miners are running, the chip temps on the miners dont get too crazy (mid 90°sC) but the room is still too hot and I obviously cant keep the door open 24/7. We have tried to attach 4 ducting to each miner that goes up into the ceiling and then ultimately over to exhausting outside. This kept the room temperature fine but the miners/hashing boards kept failing and showing the fault light. I checked the logs of the machines and every time they failed it would say Fatal Error: temperature too high! But the weird part is that the chip temps were always within the suggest range (80°-110°C). We assumed this was because the air being exhausted into the ducts wasnt being pushed all the way out and would sit in the ducting.

Does anyone have any suggestions on how to get all of the hot exhaust out of the room (with or without ducting).

Thanks!

Exhaust fans won't do that much good. I run 40 miners and have them outside of a 4'X8' plywood box. I have them exhausting directly into the box which pressurizes it. I have 4, 12" exhaust hoses running (static) to the exterior. The pressurization of the box pushes the air out the open exhaust vents just as fast as an inline fan could do it. I used to have 6, 1000 cfm inline fans pulling on the exhaust until I discovered that the fans were actually restricting the air flow, not helping. You need lots of fresh air on the intake side of the miners and you must control the hot air exiting very well, not allowing any major leaks in the box, etc. Message me and I'll send you some pictures. Just my 2 cents.