Topic: How can you cool/vent the rigs in a garage? (Read 802 times)

I think using air conditioner is not good idea for garage cooling. Before I have a mini garage which is 9m2 with 2 AC, but it seems stuck at ventilation and not effective.
Finally, I have to setup again with 2 box fans and 2 high speed fans and remove all AC. The ventilation is very good, the room temperature is kept at around 34C, but these high speed fans are quite noisy.

yeah I alaready have an external exhaust, I have six atttic fans.  I will be installing an intake fan next week.  The AC is just to help like you said cool the hotspots and add a few degrees of lower temps.

Plus it can help with humidity build up

$9.99 CAD  a sheet (4ftx4ft) 1/4 inch

I don't know what cards you have but if for example you have 30 GPU @ 200W each that is 6,000W, so (not even counting PSU & CPU heat) you will need 20,500 BTU. The remaining 4k BTU that you're talking about will probably barely cover your PSUs, CPUs, etc. In the end you're best case stuck with ambient temps in the room.
If you find a way to exhaust the heat to the outside then you will only need a small AC unit to cool the room.

In the past I used one of these 14k BTU @ 10.8A, and had external intake & exhaust so in an 27c room it would pump out 16c air all day long. https://www.amazon.com/Whynter-Dual-Portable-Conditioner-ARC-14S/dp/B0028AYQDC

What?

My electric cost is very low. Why would I spend 10A on an air conditioning when I can spend 2A on an evap cooler and use the other 8A for miners?

Ambient outside temp here reaches over 36c for months. The evap cooler allows me to keep miner rack air intake temps under 27c which allows me to run the cards hard but they stay under 70c.

Here are my few Tips for have the Rig cool.
The best ist to have the rig in a cool place. I have them in the undergroundfloor, there it is the whole year cool.
I know a big fan which pushes the cold winter air inside the room to cool down the temperature a bit more that the fans are not so loud.
In the summer time I reverse the fan and push the hot air to the outside that It not start to getting warm inside.
This solution works perfekt for me. Nothing more is needed.

If you run in the room itself also you need to exhaust and air conditioned for it bro. There is no heat issue will be produced if there is good temparature in your room bro. I see you are recommending big estimation for running with the high cost of electricity already with the miner.
Garage such a hot place. If you add the EVAP coolers are heating in the roof means it still as very bad temparature.

Thats some pretty wood!

Ive been looking at dual zone split acs they have a rediculous 22 ser rating
can cool up to 24k btus and cost only 2300 or so.

wattage is 1600 very reaonaable and you can get a heating and cooling model
which helps with humidity in the winter.

https://www.ebay.com/i/332395637591?chn=ps&var=541410197174&dispItem=1&ul_ref=http%253A%252F%252Frover.ebay.com%252Frover%252F1%252F711-117182-37290-0%252F2%253Fmpre%253Dhttps%25253A%25252F%25252Fwww.ebay.com%25252Fi%25252F332395637591%25253Fchn%25253Dps%252526var%25253D541410197174%252526dispItem%25253D1%2526itemid%253D541410197174_332395637591%2526targetid%253D441940624444%2526device%253Dm%2526adtype%253Dpla%2526googleloc%253D9019664%2526poi%253D%2526campaignid%253D1058340450%2526adgroupid%253D52757731435%2526rlsatarget%253Dpla-441940624444%2526abcId%253D1133886%2526merchantid%253D115324784%2526gclid%253DCjwKCAjwhcjVBRBHEiwAoDe5x8TVwIG03kgWbxkbnR0AW58ZfFkI7ZJ7xmvkzpK1n5O_hhuTCIDPzxoCZAEQAvD_BwE%2526srcrot%253D711-117182-37290-0%2526rvr_id%253D1474104211920

As much exhaust as you can stuff in there. Don't even consider cooling until you've done all that you can with the exhaust side. Then, if you want to run AC to drop the miner's intake air temps, so be it. I'd recommend an evap type of cooler rather than an air conditioner, far less amperage diverted.

Air conditioning is certainly not an option. He will never be able to compensate for heating from the work of the GPU. It is also important that the work of the air conditioner will increase the power consumption. It is necessary to properly direct the air flow for better circulation. This must be done by the experts. In the organization of ventilation is of great importance even the location of air vents.

attic gable style fans from home depot (Amazon as them $40 cheaper) will get you 1300+CFM exhaust. I just put 2 in my Mining Shed. I live in Texas and temps in my area have gotten to 85-90F already this year for multiple days in a row.

Cards stayed about 50-65C inside the shed. Hottest cards were in the middle of all the rigs too.

Exhausting more hot air is the key to managing Temps. A/C should be a last solution imo (more electric and can mess with humidity levels if fans go out)

I built the outdoor box rig under a covered deck....

Works incredibly well except my issue was being able to bring enough power to the box under the covered deck as compared to the 2/30 A @240V I have in the garage.


https://cdn.discordapp.com/attachments/405929816953716746/409845662696472586/20180121_124029.jpg

Now I vent into the attic with 1250 cfm fan @ 90Watts and have filtered venting on my garage door.

Working quite well thus far with 30 GPU.

Iam sorry you said there is no window in the garage but cant you open a window (i cannot see the picture of the garage because it doesn't work) or get some kind of a desert airconditioning it could help out in this hot weather
And please if you found a better soluation dont histate to share it with us because i suffer from the same problem my self

Yeah, he's smart.  AC is stupid

They are 38 watts each, it's the "Arlec 250mm White Exhaust Fan" .

What kind of power usage on the bathroom exhaust fans?

If you have enough air being pushed out of an area, you don't really need fans for instake anyway as it will be pulled in naturally.  (That's how my setup is)

Two ton hasher did a great job in that video so much so that i thought i'd take it to a slightly larger/more permanent scale being in a similar climate for almost half of the year here.
I'm in Australia and getting daily external temps of 25-40degC, and humidity from 60% up to 95%. I previously had 6 x 6card rigs in my double garage and the ambient temperature was always sitting around 40-50degC  even after i put in an extraction fan in the roof to get the heat out over the eve. My wife hated the garage that hot so i built a shed in the back yard that is only 3m x 2m x 3m high that i thought was going to have been a waste of money with the first cooling iteration, i had only put in a wall extraction fan that did ~160m2/hr.

Next attempt i built a bulkhead about 400mm square against the back wall of the shed across the entire length and put 2 x 250mm 320m2/hr bathroom exhaust fans(with room for at least 2 more) in the underneath of the bulkhead and at either end of the bulkhead on the outside i put 100x200mm vents for the hot air to evacuate.

There are 3 air intake vents 100x200mm on the lower front of the shed that originally i put box fans in front of to blow the cool incoming air at the rigs however i have now removed them to do a test to see if the air would flow naturally in the vent and out the exhaust without extra fans and the internal temp has dropped ~5degC.

I have  thermal sensors on the intake, outtake and middle racks of the shed and I am averaging 15degC difference on the incoming temps to the outgoing temps. There is very little noise from these exhaust fans, now i have no idea how long they will last being on 24/7 so time will tell but i'm happy to replace $20 ceiling exhaust fans every few months than deal with loud commercial fans.

So far i think heat is under control so time to add a few more rigs and see

nah but last yearci had half the gpus i had and no s9s or d3s
basically outputting twice the heat i did last year, but last year i had nothing to exhaust the heat
with till late summer when i added two exhuast fans.  No i have six but i still need a
way to cycle in fresh air

I agree for sure with that statement.  Setting up the rigs to run isn't hard, getting them to stay cooled 24/7 is another story.  It's not so bad with 1 or 2 rigs but when you start multiplying that or adding ASIC's to the mix, it's crazy how hot a room can get in a few minutes of them running without proper (any?) airflow.  If I only had 240v in every room during the winter, I could save money on my heating bill.