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philipma1957

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Quote from: Icarusfixius on June 17, 2017, 02:18:48 PM

I closed off my mining area from the rest of the garage today in an effort to better cool the smaller space. It seems to have worked in that ambient is a bit lower. My struggle now is that the cards are hotter than ever....Significantly hotter. I am looking to see what other advice you all may bring to the table on better maintaining the temps I need. The space I am working with is roughly an 8ft cube at the front of my garage. The fan and duct from the top left is exhausting and moves 1000CFM. the box fan at the bottom was originally an intake but the room temps got lower when i moved it to being an exhaust fan as well.

so when I look at this picture

what do these 2 fans do?

the bottom one should blow air into the mining room.

the silver one should suck air out of the mining room and out of the garage.

how big is the silver tube? 10 inch?

and how much power is that rack of rigs? 6000 watts?

6000 watts is about 20000 btu of heat

you need way more fan power for sucking air out.

I have a hot space in my solar array we have

8000 watts and use 3200 cfm in fans

my solar array gets very hot from the fact it is in a loft

notice a tarp
silver bubble warp insulation shield array from roof top heat
then silver car engine wraps 2 racks of s-9's and s-7's and avalons

these are 1600 cfm fans 2 of them so I have 3x the pull of your 1000 cfm

Icarusfixius

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Quote from: btcgolong on June 18, 2017, 11:30:47 AM

Quote from: Icarusfixius on June 18, 2017, 09:21:08 AM

What is your ambient temperature? Push pull is more effective than all intake, you'd need more fans in to lower the temps whereas a fan or two out may do the job. If ambient is too high then it's still going to run hot. I did it in my garage with Bitcoin miners and it worked just fine.

Quote

Ambient outside was 92F yesterday, the temps in the garage were hovering around 105F, This is what led me to believe I definitely needed to move more air in and out of the garage. That being said at one point someone suggested to me that you want to have at least twice as much CFM as the volume of the room. SO with the principal I made the "mining room" smaller so that my 1000CFM fan would be able to exhaust all the air in the room twice a minute. At this point it seems that either that fan doesn't move as much air as they claim, or I need to move ALOT more than 2x the room volume.

Is this solution out of the question:

http://www.homedepot.com/p/LG-Electronics-8-000-BTU-Portable-Air-Conditioner-and-Dehumidifier-Function-with-LCD-Remote-LP0817WSR/300422892

The problem with that is it wont be anywhere near enough to offset the heat of the rigs. You would need one of those for every two to three rigs.

btcgolong

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Quote from: Icarusfixius on June 18, 2017, 09:21:08 AM

What is your ambient temperature? Push pull is more effective than all intake, you'd need more fans in to lower the temps whereas a fan or two out may do the job. If ambient is too high then it's still going to run hot. I did it in my garage with Bitcoin miners and it worked just fine.

Quote

Ambient outside was 92F yesterday, the temps in the garage were hovering around 105F, This is what led me to believe I definitely needed to move more air in and out of the garage. That being said at one point someone suggested to me that you want to have at least twice as much CFM as the volume of the room. SO with the principal I made the "mining room" smaller so that my 1000CFM fan would be able to exhaust all the air in the room twice a minute. At this point it seems that either that fan doesn't move as much air as they claim, or I need to move ALOT more than 2x the room volume.

Is this solution out of the question:

http://www.homedepot.com/p/LG-Electronics-8-000-BTU-Portable-Air-Conditioner-and-Dehumidifier-Function-with-LCD-Remote-LP0817WSR/300422892

Icarusfixius

member

Activity: 97

Merit: 10

What is your ambient temperature? Push pull is more effective than all intake, you'd need more fans in to lower the temps whereas a fan or two out may do the job. If ambient is too high then it's still going to run hot. I did it in my garage with Bitcoin miners and it worked just fine.
[/quote]

Ambient outside was 92F yesterday, the temps in the garage were hovering around 105F, This is what led me to believe I definitely needed to move more air in and out of the garage. That being said at one point someone suggested to me that you want to have at least twice as much CFM as the volume of the room. SO with the principal I made the "mining room" smaller so that my 1000CFM fan would be able to exhaust all the air in the room twice a minute. At this point it seems that either that fan doesn't move as much air as they claim, or I need to move ALOT more than 2x the room volume.

leowonderful

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Quote from: Icarusfixius on June 17, 2017, 05:23:57 PM

Quote from: xxcsu on June 17, 2017, 04:39:40 PM

one thing i would change for sure is the fan you have on the floor , that fan should suck out warm air , those type of fans have a low cfm , you should get some high cfm rated fan ...
https://www.lowes.com/pd/Utilitech-Pro-24-in-2-Speed-High-Velocity-Fan/4755305
https://www.lowes.com/pd/Utilitech-Pro-36-in-2-Speed-High-Velocity-Fan/4755307

i also would use one high cfm fan to push air into that enclosed area , and one high cfm fan to pull out hot air

So that is the kind of thought that I have but to do that effectively i would need to put a hole in the exterior wall in the back of that space....I hesitate to start putting holes int he house without being %100 sure that it will work. So far nothing has moved enough air that I am convinced even that will be adequate to cool the rigs. Maybe ambient here is just too hot.

What is your ambient temperature? Push pull is more effective than all intake, you'd need more fans in to lower the temps whereas a fan or two out may do the job. If ambient is too high then it's still going to run hot. I did it in my garage with Bitcoin miners and it worked just fine.

Icarusfixius

member

Activity: 97

Merit: 10

Quote from: xxcsu on June 17, 2017, 04:39:40 PM

one thing i would change for sure is the fan you have on the floor , that fan should suck out warm air , those type of fans have a low cfm , you should get some high cfm rated fan ...
https://www.lowes.com/pd/Utilitech-Pro-24-in-2-Speed-High-Velocity-Fan/4755305
https://www.lowes.com/pd/Utilitech-Pro-36-in-2-Speed-High-Velocity-Fan/4755307

i also would use one high cfm fan to push air into that enclosed area , and one high cfm fan to pull out hot air

So that is the kind of thought that I have but to do that effectively i would need to put a hole in the exterior wall in the back of that space....I hesitate to start putting holes int he house without being %100 sure that it will work. So far nothing has moved enough air that I am convinced even that will be adequate to cool the rigs. Maybe ambient here is just too hot.

xxcsu

hero member

Activity: 1498

Merit: 597

one thing i would change for sure is the fan you have on the floor , that fan should suck out warm air , those type of fans have a low cfm , you should get some high cfm rated fan ...
https://www.lowes.com/pd/Utilitech-Pro-24-in-2-Speed-High-Velocity-Fan/4755305
https://www.lowes.com/pd/Utilitech-Pro-36-in-2-Speed-High-Velocity-Fan/4755307

i also would use one high cfm fan to push air into that enclosed area , and one high cfm fan to pull out hot air

Icarusfixius

member

Activity: 97

Merit: 10

I closed off my mining area from the rest of the garage today in an effort to better cool the smaller space. It seems to have worked in that ambient is a bit lower. My struggle now is that the cards are hotter than ever....Significantly hotter. I am looking to see what other advice you all may bring to the table on better maintaining the temps I need. The space I am working with is roughly an 8ft cube at the front of my garage. The fan and duct from the top left is exhausting and moves 1000CFM. the box fan at the bottom was originally an intake but the room temps got lower when i moved it to being an exhaust fan as well.

Topic: More cooling advice (Read 727 times)