Page 1 of 6 123456 LastLast
Results 1 to 13 of 75
  1. #1
    Join Date
    Dec 2017
    Posts
    9
    Post Likes

    Bitcoin mining room pressure

    Hey there!

    I noticed there are quite a few air flow professionals around here. I don't know if this is the right place to ask for this but here's our project.

    The attached image is a bitcoin mining room. All of the devices in there each move about 230CFM when both fans are at max speed. We currently have 16 of these mining devices and project to get up to 40 at max capacity. The room is basically a 10 foot square concrete bunker but with an angled ceiling so i'm not sure exactly how much cubic feet of air is in there.

    Name:  mining-room.jpg
Views: 399
Size:  80.3 KB

    We've separated the room in two parts with an insulating aluminium wall in which we cut holes so that the heated air from the machines would go into the right part of the room. It is not completely insulated yet as we were afraid this would cause greater pressure problems that could make our devices fans work harder than supposed.

    The air intakes on the left are two 2 inches aeration ducts with grills and no fans. In the hot part, we've first put a 1000 CFM 12inches industrial fan but it quickly became clear this wasn't enough as the hot air was getting pushed back into the first room trough every crack. We've then added another wide 30 inches by 12 inches air duct with a grill hoping it would be enough to evacuate the rest.

    As of right now, we're doing fine with 16 miners but I still can feel a big amount of negative pressure when opening the door, it almost takes 2 hands to be able to open it.

    I'd like your opinions on how we could make this setup better. There is a bit of a sound pollution concern when thinking about adding more outtakes fans since this is a residential neighborhood so there's that to take into consideration. Ideally, we would want the heated air to be evacuated while putting as less pressure as possible on our devices.

    Thanks!

  2. Dislikes Jim1959 disliked this post
  3. #2
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    29,230
    Post Likes
    Didn't you ask about this on this site a few months ago? I believe you got good advice then....
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
    Member, IAEI

    AOP Forum Rules:







  4. Likes kdean1 liked this post
  5. #3
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    15,813
    Post Likes
    Quote Originally Posted by timebuilder View Post
    Didn't you ask about this on this site a few months ago? I believe you got good advice then....
    Did they want to here what was said?

  6. #4
    Join Date
    Oct 2010
    Location
    Anderson, South Carolina, United States
    Posts
    19,973
    Post Likes
    You likely need some fresh air but the best thing to do is to put a couple of minisplits in there to keep the computer equipment cool. You would do a load calculation based on the amount of heat generated by the equipment, lights, people and structure and size the equipment accordingly. Add units as the load increases the more “mining” servers that are added.

  7. Likes OnyxQc liked this post
  8. #5
    Join Date
    Nov 2017
    Location
    Seattle, WA
    Posts
    19
    Post Likes
    Take some bitcoins and go pay an engineering firm to design and install something that works. You could do this plan-spec.

    Computer equipment is indefinite temperature rise if you have inadequate cooling. You **** up the load, and the temperature rises indefinitely until something fails. Then you remember why you pay engineers now, rather than blow half your equipment and two weeks of time and pay engineers anyway.

  9. #6
    Join Date
    Dec 2017
    Posts
    9
    Post Likes
    Thread Starter
    Quote Originally Posted by timebuilder View Post
    Didn't you ask about this on this site a few months ago? I believe you got good advice then....
    I'm totally new here and that's the first forum I've asked this question. I was planning on posting it on bitcoin mining forums too but I thought i'd ask people that were doing this long before bitcoins existed.

  10. #7
    Join Date
    Oct 2010
    Location
    Anderson, South Carolina, United States
    Posts
    19,973
    Post Likes
    Quote Originally Posted by OnyxQc View Post
    I'm totally new here and that's the first forum I've asked this question. I was planning on posting it on bitcoin mining forums too but I thought i'd ask people that were doing this long before bitcoins existed.
    You need Cooling for the server room. I assume it’s winter where you are? If it is then in the summer you’re going to have some ultra breakdowns when outdoor heat and humidity are coming through those machines.

  11. #8
    Join Date
    Dec 2017
    Posts
    1
    Post Likes
    To summarize the good advice given already:

    HVAC design is actually a discipline. it is measurements, formulae and numbers, among other things. Your problem is complex enough, and the cost of equipment failure due to inadequate design is high enough, that designing your cooling system by trial and error, and forum advice, will probably be very expensive for you. It will be more expensive than finding someone who can do the measurements, run the numbers, and tell you what is needed to work, winter and summer.

    Cooling for a server room is a well understood design requirement. You should be able to find someone with a track record in this area who knows most of what you need already, and knows what questions to ask you for the rest. What part of the world are you in? Maybe someone reading this can chime in if they are the right person to help you.

    Once you have some idea about the cost of a system that will avoid premature failure of your equipment, you may want to run the numbers through your projected revenue and expense, and assure that your business is still profitable when the cost of cooling is taken into account. That is a nontrivial part of the capital expense and operating expense of most server farms.

  12. Likes OnyxQc liked this post
  13. #9
    Join Date
    Jan 2004
    Location
    PA
    Posts
    75,863
    Post Likes
    Simple rule of thumb.

    Air in must equal air out.
    Air out must equal air in.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  14. Likes DavidDeBord, OnyxQc liked this post
  15. #10
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    29,230
    Post Likes
    Quote Originally Posted by OnyxQc View Post
    I'm totally new here and that's the first forum I've asked this question. I was planning on posting it on bitcoin mining forums too but I thought i'd ask people that were doing this long before bitcoins existed.
    A few months ago, someone was asking about the exact same situation, for the same purpose, and seeking to design the system themselves instead of using a professional design specialist. That username got the same advice.

    Is it possible for an IT person to open a new account and say they are brand new here? Yep.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
    Member, IAEI

    AOP Forum Rules:







  16. #11
    Join Date
    Mar 2015
    Location
    Hamersville, Ohio
    Posts
    501
    Post Likes
    The situation makes me even more wary about "Bit-coin".

    A Building is designed, with High Tech Computers installed, & even though Electric is supplied to these Computers (Possibly by extension cord?), ... Not one of these "Geniuses" had any forethought on how to get rid of the generated heat by the Equipment, let alone any Heat Gain/ Loss. SMH.

    I'm curious as to this measurement of "Feets"? Are "Feets" multiples of "Foot", thereby making this quickly thrown together building, larger that a "possible" 10' x 10'?

    How does one get in to the "Outdoor Air/ Fan Outake Area", .... By climbing thru the the 12" x 30 " opening in the Wall?

    I'm also curious as to whether any Building/ Mechanical/ HVAC/ Electrical, Plans were submitted to the Local Building Department? Were "Submitted Plans" Approved, & permits issued for this project to proceed?

    Has this "Project" been Inspected by your local Building Department?

    Is Your Local Utility Aware of this project?

    What about any ADA Regulations being met?

    MeThinks that this "Project" has been "Shot-gunned in", with the End Goal of making tons of $$$$$, no matter the Legal Requirements established by Local, County, State, & Possibly Federal Authorities, .. Which would include Your intended operation, as well as this haphazardly thrown together "Computer Shack".

    This is just another reason to be Very Wary of the Crypto-currencies, as well as the "Roaring 20s" Mentality of the Stock Market.

  17. #12
    Join Date
    Dec 2017
    Posts
    9
    Post Likes
    Thread Starter
    Quote Originally Posted by timebuilder View Post
    A few months ago, someone was asking about the exact same situation, for the same purpose, and seeking to design the system themselves instead of using a professional design specialist. That username got the same advice.

    Is it possible for an IT person to open a new account and say they are brand new here? Yep.
    I'm sure you're totally right man but seeing as how much interest bitcoins got this year, are you really surprised that more than one person would get the idea to post their questions here? I just googled "server room pressure forum" and you guys were first.

  18. #13
    Join Date
    Dec 2017
    Posts
    9
    Post Likes
    Thread Starter
    Quote Originally Posted by MTGreen View Post
    To summarize the good advice given already:

    HVAC design is actually a discipline. it is measurements, formulae and numbers, among other things. Your problem is complex enough, and the cost of equipment failure due to inadequate design is high enough, that designing your cooling system by trial and error, and forum advice, will probably be very expensive for you. It will be more expensive than finding someone who can do the measurements, run the numbers, and tell you what is needed to work, winter and summer.

    Cooling for a server room is a well understood design requirement. You should be able to find someone with a track record in this area who knows most of what you need already, and knows what questions to ask you for the rest. What part of the world are you in? Maybe someone reading this can chime in if they are the right person to help you.

    Once you have some idea about the cost of a system that will avoid premature failure of your equipment, you may want to run the numbers through your projected revenue and expense, and assure that your business is still profitable when the cost of cooling is taken into account. That is a nontrivial part of the capital expense and operating expense of most server farms.
    Thanks for the advice. We're in Canada and it's winter right now so we're okay but in summer it can get up to 30 Celsius outside. We did consult with a couple of air conditioning companies but they were more used to building regular server rooms with server rack mounts. Seeing as theses mining devices generate way more heat and CFM, their recommendations weren't enough to evacuate all of the generated heat. We're currently looking at our options to make this setup better but an engineering firm is out of the question right now. Everyone in the cryptocurrencies business don't roll on money like that guy seems to think, i'm just doing this on the side you know.

    I get that the general idea is to get in as much air as you get out but I was just looking on some tips on how to do that efficiently. We're not sure if we should add more fans to force the air out.

Page 1 of 6 123456 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.