how to prepare for summer? - page 2.

shibob

full member

Activity: 672

Merit: 154

Blockchain Evangelist.

Quote from: TorbjornE on March 20, 2018, 10:57:14 PM

I put a cheap outdoor fan in this way: hot air above the farms is blown into the top of the open window, and cold air enters the bottom. The main thing is to circulate.
I also use program MSI Afterbuner to manually adjust the speed of the video card fans.

Totally agree with you. I think the most important on making better ventilation is separating hot air (out take) and cold air (in take).
One of my favorite cooling solution is here: https://www.youtube.com/watch?v=UQMrtuGFbt0&t=153s

flong

member

Activity: 144

Merit: 10

I live in Texas and we're enjoying unusually cold weather this part of the year. My hope is that if I can lower the power and back off my overclock so I can put it in a manageable temperature range without having to do too much extra work. I have a 2 story home and my miner is on my first floor so hot air is going to rise up. I also currently have one fan blowing for some circulation. Crossing my fingers that will be enough.

TorbjornE

jr. member

Activity: 148

Merit: 1

The stock photography revolution

I put a cheap outdoor fan in this way: hot air above the farms is blown into the top of the open window, and cold air enters the bottom. The main thing is to circulate.
I also use program MSI Afterbuner to manually adjust the speed of the video card fans.

hous26

full member

Activity: 462

Merit: 115

I live in South Florida and have three rigs in my home. All of my GPU's are NVIDIA. I plan on putting them on 60% power throughout the summer and pray that helps mitigate the heat without sacrificing much hashpower. Currently they are on 70%.

shibob

full member

Activity: 672

Merit: 154

Blockchain Evangelist.

I'm going to buy more high speed fan, but it's hard to make better ventilation for my mining room, it just about 11m2 with only 1 window (30cm x 100cm). I think I also need to set lower power limit, currently it's 83%, maybe I will set it to 70-72% during summer. My place is quite hot, in July, the outside temperature always at 35-36C.

Futnuck

newbie

Activity: 29

Merit: 0

Quote from: Marvell2 on March 19, 2018, 04:29:01 PM

Quote from: Futnuck on March 19, 2018, 03:10:38 PM

I put the miners in the garage and bought two of these from Home Depot for a total of four vents. I have two garage doors side by side and it worked very well last year.
https://www.homedepot.com/p/WindeeVent-2-75-in-x-12-in-x-17-5-in-Aluminum-Garage-Door-Vent-2-Pack-WV1001W/205911851

Check this link and scroll down for example of a door
https://windeevent.com/about/hoa/

On the top vents i tightened the ends of bungie straps on four of the bolts to hold this fan with the stands removed blowing outward.
https://www.homedepot.com/p/Honeywell-12-in-3-Speed-Whole-Room-Circulator-Floor-Fan-HT908/203684186?MERCH=REC-_-NavPLPHorizontal1_rr-_-NA-_-203684186-_-N

So essentially the hot air was blowing out at the top of the door and the cool air was pulled in from the bottom.

how many miners do you have

I have a total of 16 1080ti's

aarigs

newbie

Activity: 49

Merit: 0

Quote from: whoismoses on March 19, 2018, 01:07:44 PM

Quote from: aarigs on March 19, 2018, 11:56:59 AM

Ok, ok, 1000$ seems to me to much for something that just moves air and given that I can potentially make maybe 1000$ per month (given difficulty etc).

1. Circulation of air
I have to circulate air that is ideally much colder than my GPU's temp.
Ideally I do not want to use to much for fan's and too much electricity ...

How to do it in my flat is questionable ... got french windows.
Once I open windows, doors , temperature inside and outside is going to be the same.

So that there is no difference when I do it on balcony (north/east side) or inside?
Then I have to protect it against occasional showers Undecided

.

2. Air-con
If I buy air-con I guess it would not make sense to circulate air and cost of additional 1-2kW could quite damage profitability...

That I have to calculate because I currently use cca. 2.7kW/h, that would be 40-100% increase in electricity consumption.
(I wish electricity was free ... somehow

)

3. Any other ideas?

It doesn't really matter what the temperature is outside. If you have your rigs in a closed room with no circulation the temperature is going to snowball and get too hot. If you are pulling air out of the room say at 3000 CFM (and replenishing with new air) from outside that is 95F / 35C it will help keep the room closer to 95F / 35C.

For example, I have a ton of GPU rigs. Last summer on a 95F day, I turned off the air circulation (to fix something) and just left the windows open. The room quickly went from 100F to 115F in about 30 minutes, it would have kept climbing if I didn't circulate the air again. Your GPUs can handle hot room temps, just imaging how hot they are inside a computer case. However, if you do not have a way to remove the heat from your house / apartment you place will get too hot for you and then eventually your rigs (though they can handle the heat better than you can). Your AC won't help. It is not designed to cool on this level unless you only have 1-12 (or so) GPUs...

Yes, you are right, I need to increase circulation somehow and remove hot air from room.

Well, wife approval factor is already quite low, I wonder how it is going to be when I install proper fan.

aarigs

newbie

Activity: 49

Merit: 0

Quote from: Palmerson on March 19, 2018, 12:16:53 PM

In summer, you will need to disable dual mining mode. You will also need to adjust the down volt mode. All this will allow you to reduce the temperature by 10-15 degrees. You also need to think about the circulation of air in the room. To enhance the effect, I additionally use a large floor fan. I even mined in the summer of dcr but this coin is no longer profitable to mine even in the winter.

I change power to 74% +/-5% and this already decreases temp.
However, I did not play with voltage as I considered it dangerous and do not have idea how to approach it.
Maybe, it is going to necessary as heat is produces as change in voltage so lower voltage should mean less consumption and less heat.

BaNgTHai

full member

Activity: 166

Merit: 100

Quote from: NateDoggETH on March 19, 2018, 04:44:12 PM

Quote from: BaNgTHai on March 19, 2018, 04:31:08 PM

Ok lets say that I have a big garage with 7 windows, big garage door and a normal door. If i where to make a tunnel from one window to another but use insulation styrofoam as the walls of the tunnel do you think the walls would make it hotter than it should be? Maybe I should go with plywood?

have as much of an exhaust fan as you can get (in my opinion, there is not overkill here) and put that on the highest window of the garage leading out. now you just need to know where you are going to be getting your "cooler" air from and build walls on each side for the tunnel. as long as you exhaust your hot air faster, you are set.

I have two windows directly facing each other and have two 2500cfm fans (one intake, one exhaust) curretly the window fans are not sealed up and sit about 8" infront of the window. Ideally everthing should be sealed from one window to another (the tunnel) along with the window fans right?

NateDoggETH

jr. member

Activity: 76

Merit: 1

Quote from: BaNgTHai on March 19, 2018, 04:31:08 PM

Ok lets say that I have a big garage with 7 windows, big garage door and a normal door. If i where to make a tunnel from one window to another but use insulation styrofoam as the walls of the tunnel do you think the walls would make it hotter than it should be? Maybe I should go with plywood?

have as much of an exhaust fan as you can get (in my opinion, there is not overkill here) and put that on the highest window of the garage leading out. now you just need to know where you are going to be getting your "cooler" air from and build walls on each side for the tunnel. as long as you exhaust your hot air faster, you are set.

NateDoggETH

jr. member

Activity: 76

Merit: 1

I installed 2 attic fans inside my shed windows. one is 1650 cfm sucking the hot air from behind my rigs and the other is 1300 cfm sucking from the side window. 900 cfm also sucking out the ceiling the ducting leading to miners.

have holes in the floors for intake

texas so far has been 80-90F and my cards have been 40-60C range. Just installed the 1300 cfm fan today so those temps can go lower. massive window tunnel going on in there.

https://i.imgur.com/fki3f08.jpg
https://i.imgur.com/x4dpGug.jpg

BaNgTHai

full member

Activity: 166

Merit: 100

Ok lets say that I have a big garage with 7 windows, big garage door and a normal door. If i where to make a tunnel from one window to another but use insulation styrofoam as the walls of the tunnel do you think the walls would make it hotter than it should be? Maybe I should go with plywood?

Marvell2

full member

Activity: 1148

Merit: 132

Quote from: Futnuck on March 19, 2018, 03:10:38 PM

I put the miners in the garage and bought two of these from Home Depot for a total of four vents. I have two garage doors side by side and it worked very well last year.
https://www.homedepot.com/p/WindeeVent-2-75-in-x-12-in-x-17-5-in-Aluminum-Garage-Door-Vent-2-Pack-WV1001W/205911851

Check this link and scroll down for example of a door
https://windeevent.com/about/hoa/

On the top vents i tightened the ends of bungie straps on four of the bolts to hold this fan with the stands removed blowing outward.
https://www.homedepot.com/p/Honeywell-12-in-3-Speed-Whole-Room-Circulator-Floor-Fan-HT908/203684186?MERCH=REC-_-NavPLPHorizontal1_rr-_-NA-_-203684186-_-N

So essentially the hot air was blowing out at the top of the door and the cool air was pulled in from the bottom.

how many miners do you have

pickleburglar

newbie

Activity: 70

Merit: 0

Last summer while my farm was still in my home I used some basic €10 room fans + cardboard boxes to make air shafts and deliver cool air from the window right at the intakes of the cards.

Was actually pretty effective, the hottest cards (sapphire 1 fan 570's) saw a dramatic improvement from being thermal throttled at 80C down to ~70C. Well that was when dual mining was still profitable, doing just eth they would hover at around 65C.

This summer I don't expect much trouble, I've moved my farm to a much larger space and arranged them on new racks designed for vertical ventilation... with more cardboard air shafts! Grin

Futnuck

newbie

Activity: 29

Merit: 0

I put the miners in the garage and bought two of these from Home Depot for a total of four vents. I have two garage doors side by side and it worked very well last year.
https://www.homedepot.com/p/WindeeVent-2-75-in-x-12-in-x-17-5-in-Aluminum-Garage-Door-Vent-2-Pack-WV1001W/205911851

Check this link and scroll down for example of a door
https://windeevent.com/about/hoa/

On the top vents i tightened the ends of bungie straps on four of the bolts to hold this fan with the stands removed blowing outward.
https://www.homedepot.com/p/Honeywell-12-in-3-Speed-Whole-Room-Circulator-Floor-Fan-HT908/203684186?MERCH=REC-_-NavPLPHorizontal1_rr-_-NA-_-203684186-_-N

So essentially the hot air was blowing out at the top of the door and the cool air was pulled in from the bottom.

gotminer

member

Activity: 644

Merit: 24

Quote from: whoismoses on March 19, 2018, 01:34:40 PM

Quote from: gotminer on March 19, 2018, 01:27:59 PM

Your exhaust needs to be higher than your intake...

There is a huge downside to this. If your are pulling air out of your mining room faster than you can pull it in the intake you will create a vacuum in a perfectly sealed room. That said, I'm sure you don't have a perfectly sealed room. So what will really happen is you will begin pulling cold air from the rest of your house / apartment leading to increased cooling (or heating in the winter) bills.

I suggest you seal off the room as much as you can and equalize it.

I am not an expert, but I can tell you that you will increase your cooling / heating bills if you pull out more air than you can pull in (when you don't have a sealed room).

In a sealed grow tent, pulling out more than you bring in is just fine...

Not saying that they are and I'm really not sure how to test it, but just going by fan specs, the intake is 3120cfm and the exhaust is 3190cfm, so it's only a difference of 90cfm. I'm not sure what that would do in terms of extra heating or cooling costs.

I can cover the ceiling vent and stick a towel or something under the door, but I'm not sure what more I could do to seal it off any better than that.

whoismoses

member

Activity: 247

Merit: 59

Quote from: gotminer on March 19, 2018, 01:27:59 PM

Your exhaust needs to be higher than your intake...

There is a huge downside to this. If your are pulling air out of your mining room faster than you can pull it in the intake you will create a vacuum in a perfectly sealed room. That said, I'm sure you don't have a perfectly sealed room. So what will really happen is you will begin pulling cold air from the rest of your house / apartment leading to increased cooling (or heating in the winter) bills.

I suggest you seal off the room as much as you can and equalize it.

I am not an expert, but I can tell you that you will increase your cooling / heating bills if you pull out more air than you can pull in (when you don't have a sealed room).

In a sealed grow tent, pulling out more than you bring in is just fine...

gotminer

member

Activity: 644

Merit: 24

Something else to consider on air circulation. This wasn't something that I was even thinking about until Phillip pointed it out to me. Your exhaust needs to be higher than your intake and they shouldn't be on the same wall. That's exactly why I'm going to use the window or both windows in my mining room for intake and exhaust through the ceiling.

Also, the air that you are circulating does not need to be cooler than your gpu temps.

adaseb

legendary

Activity: 3808

Merit: 1723

Unless you cohabit in the same room as your rigs just open the windows and put an intake and exhaust fan.

GPUs can live in a hot environment. 40-45C is no problem.

Summer is only an issue if you are sleeping in the same room as you are mining.

whoismoses

member

Activity: 247

Merit: 59

Quote from: aarigs on March 19, 2018, 11:56:59 AM

Ok, ok, 1000$ seems to me to much for something that just moves air and given that I can potentially make maybe 1000$ per month (given difficulty etc).

1. Circulation of air
I have to circulate air that is ideally much colder than my GPU's temp.
Ideally I do not want to use to much for fan's and too much electricity ...

How to do it in my flat is questionable ... got french windows.
Once I open windows, doors , temperature inside and outside is going to be the same.

So that there is no difference when I do it on balcony (north/east side) or inside?
Then I have to protect it against occasional showers Undecided

.

2. Air-con
If I buy air-con I guess it would not make sense to circulate air and cost of additional 1-2kW could quite damage profitability...

That I have to calculate because I currently use cca. 2.7kW/h, that would be 40-100% increase in electricity consumption.
(I wish electricity was free ... somehow

)

3. Any other ideas?

It doesn't really matter what the temperature is outside. If you have your rigs in a closed room with no circulation the temperature is going to snowball and get too hot. If you are pulling air out of the room say at 3000 CFM (and replenishing with new air) from outside that is 95F / 35C it will help keep the room closer to 95F / 35C.

For example, I have a ton of GPU rigs. Last summer on a 95F day, I turned off the air circulation (to fix something) and just left the windows open. The room quickly went from 100F to 115F in about 30 minutes, it would have kept climbing if I didn't circulate the air again. Your GPUs can handle hot room temps, just imaging how hot they are inside a computer case. However, if you do not have a way to remove the heat from your house / apartment you place will get too hot for you and then eventually your rigs (though they can handle the heat better than you can). Your AC won't help. It is not designed to cool on this level unless you only have 1-12 (or so) GPUs...

Topic: how to prepare for summer? - page 2. (Read 1068 times)