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  1. #1
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    Professional Advice Wanted!

    I'm curious as to what all your opinions are on the cost effectiveness of cooling a room down versus exhausting the heat out of a room.

    If you had a small ~1,000 sq ft warehouse located in southern Florida where it's always hot, and you were going to fill the small warehouse with computers (bitcoin miners) that were going to draw between 26,000 - 30,000 watts which would put out 88,715 - 102,364 BTU/hr, how would you deal with the heat? Would you attempt to exhaust it out of the room with large drum fans? Would you try to cool the entire room down with some sort of large cooler? Would you try to do both? I'm looking for the most cost effective solution, but these computers (miners) cannot run at the 100+ degrees that I know the room will be if I don't put a solution in place.

  2. #2
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    Quote Originally Posted by escoutah View Post
    If you are talking about Computers, then you should go with Cooling down the room instead of blowing out the heat.

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    I've removed two of your posts for self promotion but now this. You are new here so go easy and relax. We have a policy that you can't advertise until you become a Pro here. Take your time and settle in but if you keep advertising I'll have to block you.


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  3. #3
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    Quote Originally Posted by escoutah View Post
    If you are talking about Computers, then you should go with Cooling down the room instead of blowing out the heat.
    They're "bitcoin miners". They're essential small computers the size of a loaf of bread that consume 800w - 1400w each, and all they do is sit there and perform calculations and spit out a great amount of hot air, and I plan on filling a ~1,000 sq ft warehouse unit with ~30 of them.

    Do you really believe that here in Florida cooling down the room will be more cost effective than exhausting the hot air? Is cooling down the room when the Florida sun is always beating down on it even possible? I've done some research on "swamp coolers" or "evaporative coolers" but most people agree that it is too humid here in south Florida for them to work. I also hear that any sort of portable AC or cooler that could possibly cool down this type of situation would cost too much in electricity to run.

    Is there any sort of portable AC you had in mind, or for something this scale an industrial solution that wouldn't be more than a thousand dollars or two? Thanks a lot.
    Last edited by Dad; 08-18-2017 at 02:10 PM.

  4. #4
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    Quote Originally Posted by gmpoison View Post
    They're "bitcoin miners". They're essential small computers the size of a loaf of bread that consume 800w - 1400w each, and all they do is sit there and perform calculations and spit out a great amount of hot air, and I plan on filling a ~1,000 sq ft warehouse unit with ~30 of them.

    Do you really believe that here in Florida cooling down the room will be more cost effective than exhausting the hot air? Is cooling down the room when the Florida sun is always beating down on it even possible? I've done some research on "swamp coolers" or "evaporative coolers" but most people agree that it is too humid here in south Florida for them to work. I also hear that any sort of portable AC or cooler that could possibly cool down this type of situation would cost too much in electricity to run.

    Is there any sort of portable AC you had in mind, or for something this scale an industrial solution that wouldn't be more than a thousand dollars or two? Thanks a lot.
    If your doing this to make money, and plan on doing this for a while, you need to spend some money. First, insulate the heck out of the ceilings and walls. this is the cheapest way to reduce the amount of A/C you need. From there you need to find a good a/c contractor to size and install an a/c unit. no it will not be less than $. Why risk lossing all the computers over a few K's? Plus if this is for income purposes you can write off all the expenses on your taxes. You need a/c!!!
    Last edited by beenthere; 08-24-2017 at 04:42 AM.

  5. #5
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    Quote Originally Posted by jbhenergy View Post
    If your doing this to make money, and plan on doing this for a while, you need to spend some money. First, insulate the heck out of the ceilings and walls. this is the cheapest way to reduce the amount of A/C you need. From there you need to find a good a/c contractor to size and install an a/c unit. no it will not be less than $. Why risk lossing all the computers over a few K's? Plus if this is for income purposes you can write off all the expenses on your taxes. You need a/c!!!
    Yes, the goal is to make money from doing this, however the place I'll use I only plan on renting, so I'm not sure how many major modifications I will be able to do. Though if I'm paying for it all, I can't imagine the building owner caring much.

    I just can't spend more than I need to. I don't need the room be air conditioned down to 75 degrees like your home is, I can't even imagine how expensive it would be to do that. I just need the room to not be over 100 degrees, which I know it would be as the ambient temperature outside in Florida is usually that hot.

    100,000 BTU/hr seems like an impossible task to refrigerate rather than try to expel all of that hot air with exhaust fans, only problem is I'll then need to suck in air from outside. It won't be cool air I will be sucking in, it would be 90 degree air from outside under the Florida sun, but I imagine it would be cooler air than the air being pushed out of those machines. 1000 square feet is 31,622 cubic feet, I could easily exhaust that with two 48 inch 18,000 cfm drum fans, I'm just worried about the hot air I would have to suck in from outside for intake is all. I wish there was a way to cool that air down just before sucking it into the room. I was considering a portable evap cooler for that, but the air would be too humid.
    Last edited by beenthere; 08-24-2017 at 04:42 AM.

  6. #6
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    You need a Liebert.

  7. #7
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    Quote Originally Posted by joejax View Post
    You need a Liebert.
    He needs a Professional Engineer!

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  9. #8
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    Quote Originally Posted by gmpoison View Post
    Yes, the goal is to make money from doing this, however the place I'll use I only plan on renting, so I'm not sure how many major modifications I will be able to do. Though if I'm paying for it all, I can't imagine the building owner caring much.

    I just can't spend more than I need to. I don't need the room be air conditioned down to 75 degrees like your home is, I can't even imagine how expensive it would be to do that. I just need the room to not be over 100 degrees, which I know it would be as the ambient temperature outside in Florida is usually that hot.

    100,000 BTU/hr seems like an impossible task to refrigerate rather than try to expel all of that hot air with exhaust fans, only problem is I'll then need to suck in air from outside. It won't be cool air I will be sucking in, it would be 90 degree air from outside under the Florida sun, but I imagine it would be cooler air than the air being pushed out of those machines. 1000 square feet is 31,622 cubic feet, I could easily exhaust that with two 48 inch 18,000 cfm drum fans, I'm just worried about the hot air I would have to suck in from outside for intake is all. I wish there was a way to cool that air down just before sucking it into the room. I was considering a portable evap cooler for that, but the air would be too humid.
    If this is a money making adventure you need to do it right and spend the money. Rent the place long term so you get an roi if you have to.

    How much do the machines cost? Is it worth replacing everyone of them when they overheat?

    Where did you come up with 100k btus?
    I have not done the load so curious where that number came from


    Sent from my iPhone using Tapatalk

  10. #9
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    Quote Originally Posted by jbhenergy View Post
    If this is a money making adventure you need to do it right and spend the money. Rent the place long term so you get an roi if you have to.

    How much do the machines cost? Is it worth replacing everyone of them when they overheat?

    Where did you come up with 100k btus?
    I have not done the load so curious where that number came from


    Sent from my iPhone using Tapatalk
    I just converted the watts to btu's, 100k btu's as far as I'm aware is an insane amount of heat and wouldn't be worth trying to cool the room they're in.

    The machines have an operating temperature of 32F - 104F, so they can operate at a high temperature, but it's obvious not as good for them than if they were running in a cooler environment.

    I can't spend more than $ on a cooling setup which I'm assuming wouldn't be enough to cool a 1,000 sq ft room in the florida heat with 100k BTU/hr being pumped into it. Although I would be renting the place for at least a year, possibly two, as I'll need to have a 220v 100 amp service installed as well, so it may be worth it to keep it cooled. I just can't imagine it would be anywhere near $.

    If there was only some way to instead of cooling the whole room, I could just shoot cold air to the intake of each machine. As I mentioned before it's the size of a loaf of bread, with a fan in the front for intake, and a fan in the back for exhaust. It would be really easy to fasten something over the front fan to feed cold air into it, and faster something over the rear to pipe out heat. I just don't know what I could use to pump cold air into it.
    Last edited by beenthere; 08-24-2017 at 04:41 AM. Reason: Price

  11. #10
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    You can't do the job for the money you anticipated.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

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  12. #11
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    Quote Originally Posted by joejax View Post
    You need a Liebert.
    I just started researching those, at first I went to their website where they don't even have prices listed and you need to consult with someone before purchasing, that of course would be way overkill.

    However I did see things on eBay that were advertised as "server room air conditioners". There was one called "Liebert 20 ton CRAC Unit" that costs $ and looks like a huge cabinet, but I don't know anything about them. I have no clue even how it works or what it's capable of cooling. I'm assuming it would get hooked up to ducting that could be run throughout the roof of my 1,000 sq ft room? I doubt however that a machine like that for only $ could cool off a 1000 sq ft warehouse room in Florida with 100k BTU/hr being pumped into it.
    Last edited by beenthere; 08-24-2017 at 04:41 AM. Reason: Price

  13. #12
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    I looked it up and apparently 100k BTU/hr converts to 8.3 refrigerated tons, which is half of what that Liebert 20 ton unit claims it can do, but I doubt it for only $. I'm trying to find resources to research these units more but I'm not finding much help.
    Last edited by beenthere; 10-13-2017 at 05:21 AM.

  14. #13
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    Forget going cheep.

    Get a Engineer

    Your going to loose $

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