Thanks. Just one Avalon6 on a ~4'x4" bendy aluminum vent. I'll look into upgrading to a shorter 6" ASAP.
I've found with my Avalons, I can get the temps down with a standard box fan. I just use it to circulate cooler air, towards the "non-fan" side. I wish they had a double fan design, they'd be the best.
I have had close to 15 feet of 5 inch insulated flexible pipe on one miner for a bit to put heat into one room in a basement, and the temp only went up 3 or 4 deg only. Ambient was around 21 or 22 deg c in the room it was pulling air from. Had no pipe on the intake. No helping fans. I was actually surprised that it stayed so cool. still was low 83-85 chip temps average.
If you have had it running for a while, blow out the dust with a compressor. Dont forget to block the fans from rotating when you use the compressor.
My mining "space" is being put in a basement as well. Yesterday it was 86°f outside, 75°f in the main floor of my house, and 50°f in the dungeon. On a 100°f day, its about 65°f down there. I have 6" fan adapters vented directly out the north side window. The concrete walls, and floor, really help. In the winter, they'll be piped into the HVAC system. Ole Michigan winters can be harsh!!! Ha!!!