Cooling micro data center for miners

[wangkanai]

I'm a miner myself with own engineering company manufacture that build micro data center. I'm planning to move my miners from in this cooling that my team build to save money hosting these miner else.
It can take 4KW easily per rack with PUE of 1.4.

its not enough for hard core mining, which i'm planning to up the spec to handle 20KW per rack with PUE 1.3

I like you comments what else i should improve.

Thank mates 

http://www.sarin.mobi/wp-content/uploads/2014/11/micro-data-center-perspective.png
http://www.sarin.mobi/wp-content/uploads/2014/11/micro-data-center-front.png
http://www.sarin.mobi/wp-content/uploads/2014/11/micro-data-center-back.png
http://www.sarin.mobi/wp-content/uploads/2014/11/micro-data-center-inside.png
http://www.sarin.mobi/wp-content/uploads/2014/11/micro-data-center-spec.png

[efx]

 That looks like a rather nice design you have there  


I will leave it to others more knowledgeable than I to comment on the potential efficiency of the design.

I like what I see though.

[Newar]

Is this from a fridge? Just asking because fridge systems are not made to run 24/7.

Also, stating the obvious, if you need to spend on hardware and electricity to cool your miners, you already have lost the edge in the competition.

[dogie]

As others have said, only the minority mine with AC unless they have really, really cheap power. Most people just use a tonne of ambient air to replace the warm air.

With all these cases, you're also running into the problem that they're not really needed. We can pick up cheap steel shelving for a negligible price compared to a rack, or open racks for a few hundred.

[notlist3d]

Winter weather is started for the lucky ones.  Can use cool/cold outside air.   It's much cheaper to use ambient cold temperature then running a AC.

I really like the product, I just will never be able to justify it personally.

[wangkanai]

As for 24/7 yap is certified to do so. Also guys like Hitachi said build them OEM brand cabinet.
For you cold place are luck. I'm in Thailand where the season is only consider is hot and hotter and hottest.

[notlist3d]

As for 24/7 yap is certified to do so. Also guys like Hitachi said build them OEM brand cabinet.
For you cold place are luck. I'm in Thailand where the season is only consider is hot and hotter and hottest.

It is very cool no one can deny it.  I love the quality.

But in today's world you might be better off paying for hosting somewhere that is not " only consider is hot and hotter and hottest".  It takes a LOT of fees to pay off this i'm guessing. 

Is your electricity really cheap?

[wangkanai]

Hosted colocation in Thailand cost $3,000/month with max 7kw. Extra power cost $0.3/kwh
So I don't think you afford to be in such system, where commercial power would cost $0.08/kwh from the grid.

[jimmothy]

What's the cost per KW for one of these things?

[wangkanai]

What's the cost per KW for one of these things?

Price quote in unit of rack? And its not ratio.
This unit right now is $8,000 FOB Thailand.
Right now I'm trying to drive the cost down and up the cooling capacity.

[dogie]

What's the cost per KW for one of these things?

Price quote in unit of rack? And its not ratio.
This unit right now is $8,000 FOB Thailand.
Right now I'm trying to drive the cost down and up the cooling capacity.

So thats the thing, even if you get it up to 10KW per rack that's only 12TH of miners. Which is about $5000 of miners. The costs don't add up.

[wangkanai]

What's the cost per KW for one of these things?

Price quote in unit of rack? And its not ratio.
This unit right now is $8,000 FOB Thailand.
Right now I'm trying to drive the cost down and up the cooling capacity.

So thats the thing, even if you get it up to 10KW per rack that's only 12TH of miners. Which is about $5000 of miners. The costs don't add up.

What do you think is reasonable?
30KW per rack can put in 14 x Antminer S4 (2TH) = 28TH per rack

[wangkanai]

also think antminer s4 cost $1,250 without shipping and taxes, so that is around $9,000 for 6 units
then if 30kw per rack support 20 antminer s4, where you can put in max (42/3) = units
for Spondoolies SP35 would need 3.5kw per unit of 2U. then one rack can fit 21 x SP35 = 73.5kw which miner would cost $83,580

[Tupsu]

also think antminer s4 cost $1,250 without shipping and taxes, so that is around $9,000 for 6 units
then if 30kw per rack support 20 antminer s4, where you can put in max (42/3) = units
for Spondoolies SP35 would need 3.5kw per unit of 2U. then one rack can fit 21 x SP35 = 73.5kw which miner would cost $83,580

What do you do when the air conditioner is going to melting process ?

20xS4 =28kW  at least 5 minutes in a small enclosed space. How long does it take time for S4 go 50 degrees Celsius to 80 degrees and turns mining out. After that you need to do a manual restart.

Your rack  never support 20 antminer s4.

[klondike_bar]

also think antminer s4 cost $1,250 without shipping and taxes, so that is around $9,000 for 6 units
then if 30kw per rack support 20 antminer s4, where you can put in max (42/3) = units
for Spondoolies SP35 would need 3.5kw per unit of 2U. then one rack can fit 21 x SP35 = 73.5kw which miner would cost $83,580

what the hell are you talking about? The specs in the first post state that the maximum cooling capacity of the upgraded-level cabinet is only 3.5kW.

Thats a single SP35 sitting in the cabinet, and add about 30% to that to cover the costs of running an AC unit to handle the heat.

ADD ANOTHER 30% to that to cover the cost of running an AC in the building that contains the cabinet, since the building is now dealing with both the SP35 heat PLUS the heat created by running an AC in the cabinet.

3.5kW*(1.3^2) = 5.9kW of electricity used per cabinet that holds only 1 SP35, and dumps all the heat directly out the back (which is what an unenclosed SP35 does anyways)

[wangkanai]

This project is proven to been feel interesting. Yes, right now my cabinet is 3.5kw capacity. The question is how capacity should I upgrade my design. Talking from point that I have pictures shown as working production for another application already. So I like to find a spot in bitcoin mining. But the one I have does not fit the capacity requirements yet.
Thank you for your advice mate

[klondike_bar]

This project is proven to been feel interesting. Yes, right now my cabinet is 3.5kw capacity. The question is how capacity should I upgrade my design. Talking from point that I have pictures shown as working production for another application already. So I like to find a spot in bitcoin mining. But the one I have does not fit the capacity requirements yet.
Thank you for your advice mate

I am racking my brain to understand what situation someone would ever use a 20kW contained-cooling rack. Usually these are used with 1-2kW of gear as a sound-dampening enclosure, not meant to actually cool a large amount of power.

OPTION 1: You put 20kW of equipment in an open rack or on shelving. It costs <$400. 20kW of heat is blown out the back of the cabinet.
OPTION 2: You put 20kW of equipment into a sealed enclosure with a 1.3 PUE AC built in. It costs >$5000 and weighs >300lbs when empty. 26kW of heat is blown out the back of the cabinet.

oh, and option 2 is a little quieter, you only have the noise of a 20kW-capable air conditioner.


Seriously - this is a product with no market. Liquid Immersion cooling tanks are the obvious alternative, and are quieter, FAR more power efficient, and can move the heat outside of a building by pumping the hot liquid to a radiator located on the roof.

[notlist3d]

This project is proven to been feel interesting. Yes, right now my cabinet is 3.5kw capacity. The question is how capacity should I upgrade my design. Talking from point that I have pictures shown as working production for another application already. So I like to find a spot in bitcoin mining. But the one I have does not fit the capacity requirements yet.
Thank you for your advice mate

I am racking my brain to understand what situation someone would ever use a 20kW contained-cooling rack. Usually these are used with 1-2kW of gear as a sound-dampening enclosure, not meant to actually cool a large amount of power.

OPTION 1: You put 20kW of equipment in an open rack or on shelving. It costs <$400. 20kW of heat is blown out the back of the cabinet.
OPTION 2: You put 20kW of equipment into a sealed enclosure with a 1.3 PUE AC built in. It costs >$5000 and weighs >300lbs when empty. 26kW of heat is blown out the back of the cabinet.

oh, and option 2 is a little quieter, you only have the noise of a 20kW-capable air conditioner.


Seriously - this is a product with no market. Liquid Immersion cooling tanks are the obvious alternative, and are quieter, FAR more power efficient, and can move the heat outside of a building by pumping the hot liquid to a radiator located on the roof.

It might allow a data center without the airflow to host a few miners.  But cost I don't see this as feasible.

The true data centers for bitcoin have massive airflow.  And they would never need this.

I would have to agree to expensive to hobby miners, and no market for these in a true bitcoin data center.

[wangkanai]

This project is proven to been feel interesting. Yes, right now my cabinet is 3.5kw capacity. The question is how capacity should I upgrade my design. Talking from point that I have pictures shown as working production for another application already. So I like to find a spot in bitcoin mining. But the one I have does not fit the capacity requirements yet.
Thank you for your advice mate

I am racking my brain to understand what situation someone would ever use a 20kW contained-cooling rack. Usually these are used with 1-2kW of gear as a sound-dampening enclosure, not meant to actually cool a large amount of power.

OPTION 1: You put 20kW of equipment in an open rack or on shelving. It costs <$400. 20kW of heat is blown out the back of the cabinet.
OPTION 2: You put 20kW of equipment into a sealed enclosure with a 1.3 PUE AC built in. It costs >$5000 and weighs >300lbs when empty. 26kW of heat is blown out the back of the cabinet.

oh, and option 2 is a little quieter, you only have the noise of a 20kW-capable air conditioner.


Seriously - this is a product with no market. Liquid Immersion cooling tanks are the obvious alternative, and are quieter, FAR more power efficient, and can move the heat outside of a building by pumping the hot liquid to a radiator located on the roof.

It might allow a data center without the airflow to host a few miners.  But cost I don't see this as feasible.

The true data centers for bitcoin have massive airflow.  And they would never need this.

I would have to agree to expensive to hobby miners, and no market for these in a true bitcoin data center.

The product sale good with more then 10,000 units to market like bank branch, small office, cellular site and etc in Thailand alone. Heat pass through a duct out of the room.

Immersion cooling is what I'm looking at next. I'm developing a 200kw per horizontal rack with micro chiller. Trying to make one withIn $20K budget right now.

[seriouscoin]

This project is proven to been feel interesting. Yes, right now my cabinet is 3.5kw capacity. The question is how capacity should I upgrade my design. Talking from point that I have pictures shown as working production for another application already. So I like to find a spot in bitcoin mining. But the one I have does not fit the capacity requirements yet.
Thank you for your advice mate

Hey are you a failed engineer or something?

You CANT upgrade the cabinet cooling capacity due to the damn design is based on phased change. There will be no compressor setup in the world that can handle 10kW that can fit in that cabinet.

You want high density, look for other alternatives.