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It is in the warehouse. It can do as many as 150 s19s or about 500kwatts

I will photo it soon.

Our goal is to relocate 150kwatts of miners  from the other spot

then add 75kwatts of miners.

hoping to add 25 s19 xp's or

20 s19 xp's and 5 L7 units.

20ft by 8ft by 8ft.

we will cut a hole in warehouse wall for exit air

https://www.talkimg.com/images/2023/08/10/G4Bc5.jpeg

space

space

Nice. Bitmain have s19k on their site just now, 120T for 2700W - 23T/J, $2500, seems like a good deal compared to the s19xp at $33/T for 21.5T/J efficiency.

Have you considered hydro units?

that box has a water curtain and we know to filter the water in to stop sediment.

we will do air cooling and water curtain.

The letter K next to anything Bitmain is scary, the last time they put a K next to the S9 it was a huge disaster, I wouldn't rush buying the first model of any miner, I'd wait until enough people have tested it and reviewed it, keep in mind, that cheaper miners almost always mean less quality.

Nice stuff Phil, I hope you get to phill this little box pretty soon before the halving, is this in the same old farm which you had cooling issues with?

yeah the miners are 20 feet to the right of the box.

note the wall color is the same

https://www.talkimg.com/images/2023/06/04/wNmS8.jpeg

Phil, I am not sure if this was already discussed somewhere or you have searched about it but in this project you can also try out "air curtain". These are not meant for the cooling purpose but for avoiding the entry of bacteria's, solid particles and other type of contaminant into clean rooms in the pharma industries. I know this because I am trying to understand the mechanics behind different ways of cooling the mining rigs.

In case you have dirty water and bad filtration system around the area then you can option out for the air curtain and certainly do some "experiments" with it.

An Air Curtain is either horizontal or vertical and is fitted to entrance/door.

What a miner can do is project the vertical air curtains in such a way that they will throw out the hot air out of the mining box area. The conventional fans are not proper fit because they are big, circular and their sizes limit the "surface area" they can cover.

https://i.ibb.co/wpnTj58/air-curtain.jpghttps://i.ibb.co/Yy6Dpwc/vertical-air-curtain.jpg


Have you ever experimented on this or do you think it can be good strategy for the up rising miners? May be bigger farms too.

It is interesting but I have no experience using it.

The box we purchased has a water curtain and fans.

Clifton, New Jersey has sediment filled water that needs a 5 micron pre filter then a 1 micron filter.

We know this from running out hessaire swamp cooler.

https://www.amazon.com/gp/product/B07YVYPXH8/ref=ppx_yo_dt_b_search_asin_title?

we use this water filter
https://www.amazon.com/gp/product/B079NX153V/ref=ppx_yo_dt_b_search_asin_title?

and this media in it

5 micron first
https://www.amazon.com/gp/product/B01M0D1UGM/ref=ppx_yo_dt_b_search_asin_title?

1 micron second
https://www.amazon.com/gp/product/B01M0YCF00/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1


Since the box has a bigger water curtain then the hessaire

we will use

https://www.amazon.com/gp/product/B003VT5ES0/ref=ox_sc_act_title_1?


10 micron first  5 micron second  1 micron last

https://www.amazon.com/5Micron-Sediment-Polypropylene-Water-Filter/dp/B07N418MK8/ref=sr_1_8?


Based on our hessaire swamp cooler the filters above will keep the water curtain sediment free.

Yeah, the air curtain I explained is just new experimental approach. Frankly that has wide array of application in the pharma industries and they do use it for keeping the two sections insanely cold. One you have ability to drive the air in various angles. The design is so thin that it fit to any type of miner box you have. It is like region separator so it's not like conventional fans and can get the work done quickly.



You are using high number of filters. This must be adding up lot of cost in your overall project.

A) I mean the filter cost must be divided in the two stages viz.,
1) Filtering unit - one time cost
2) Filters of 5 micron, 1 micro and 10 micron to be replaced now and then since they are not the permanent one. They have to have the wear and tear over the period of time.

Is the water that bad in your region?

I mean instead of this you should have one big storage tank where you should process the water and store then use. Not sure what's your process?

Does the Point A mentioned above is correct in your case?

yeah the 2 stage or 3 stage case is a one time cost.

the filter media adds up .. For our hessaire swamp cooler we use 20x 5 micron media replacements and 10x 1 micron media replacements. so 30 pieces at 2 bucks a piece is 60 a year. plus labor.  this machine (hessaire) uses 40-60 gals
every year.

 edit 40-60gals a day or 1200-1800gals a month

@Flexystar
That would make no difference - the amount of water that goes through the filters is the same... Processing the required amount of water as-needed or periodically in large to-be-stored gulps will on average still run the same amount of water through the filters.

Yep I corrected what our hassaire uses

40-60 gallons a day

1200-1800 gallons a month.


but the two 10 inch by 2.5 inch filter's stop the sediment dead in its tracks.

a 99% drop off in the sediment.

30 x 2 = 60 dollars a year for 1 hessaire.

I think the box will need 3x that and use 3600-5400 gallons a month.

BTW the water costs more than the filters cost maybe 50-60 a month in water for the single hessaire swap cooler.

Air curtain is used like in the entrance of shops, but i don't think it would work at all for this use. The amount of air moved by the miners would overpower it. The places that use air curtain are usually not moving vast amounts of CFM from one side to the other.

Yeah good point.




We are going to place this aluminum screening in front of the water curtain .

https://www.metroscreenworks.com/60-x-50-aluminum-screen-for-tiny-insects/


so:

 Air>>>Screen>water curtain>box cold aisle > miners > exhaust >>>

the screen will act as some protection to the water curtain media.

https://www.amazon.com/dp/B07YW2HK7L?

typical media could be damaged by bugs and dust the screen will slow it.

we would make 4 panels that are 5 by 8 feet.

wash with a hose once a month? week?

I even saw some using fabrics, what they do is have a screen fabric in place a few days then switch with a second clean one they have ready while they clean the first. Its done weekly or something like that. There are also "proper" (large) filters they use for like industrial HVAC systems in data centers etc.

yeah between the water filters and the aluminum screens the water media sponge should last a year or more.

this will be learning process for us.

hey your braiins+ is doing great on one test s19 pro

set to 2475 watts and it does about 95-98th runs cool.

I will be burning more cards and setting up a few more as I have 4 s19 pro 110th machines

2 Side door shots and a view of the current asic room behind the cut-out people

https://www.talkimg.com/images/2023/08/27/M4gr8.png

https://www.talkimg.com/images/2023/08/27/M4iW3.png

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water curtain one and two on the right also power cabinet on the right
shelving on the left the edge of the PDUs are visible

https://www.talkimg.com/images/2023/08/27/M4KQw.jpeg

top shelf and first of 4 fans
https://www.talkimg.com/images/2023/08/27/M4bY9.jpeg
second shelf same fan

https://www.talkimg.com/images/2023/08/27/M4OAa.jpeg

one of 8 pdu's
https://www.talkimg.com/images/2023/08/27/MBNTg.jpeg


breaker box


https://www.talkimg.com/images/2023/08/27/MBELI.jpeg

4 shelves 8 plus in all
https://www.talkimg.com/images/2023/08/27/MBIqd.jpeg

we may lift it higher than the concrete wall to avoid cutting it. (the wall)
https://www.talkimg.com/images/2023/08/27/MBkyz.jpeg

the media for the water curtain is under the white intake slats. there is an aluminum screen to prevent bug damage to the media.
https://www.talkimg.com/images/2023/08/27/MBvb2.jpeg

this just shows my ignorance but with that kind of airflow from the water curtain so close (a few feet looks like?) to the shelves the asics will live  on that there is no water mist that could get sucked in. but that box looks to be pretty well thought out so obviously it must work somehow.

when you say you might raise the box to above the level of the concrete/cinder block wall are you talking a few feet (looks to be 1/2 way up that door so 3-4 feet)?

Yeah I think it is 42 inches.

As for the moisture question if it is an issue we will put a layer of material like weed screen on the inside of the box along the water media. I also suspect at the rate we fill the box and when we get it running.
Say Oct 15 2023 we may not need the water curtain till may.

The fans are beasts 10000 cfm each so 40000 cfm will be far more than we use now. Say 22000 cfm

this should be fun project. we will grow a lot of hash from now till june.

This may be a silly question, but how can you afford 500KW of power with todays energy rates do you have your own solar farm and power station as well?

Its mind boggling!  ??? ;D

our solar does 1.5 megawatts a day. that is about 20 s19s nonstop.

our on site transformer is 320kva that is about 90 s19s nonstop.

the 320kva transformer is the master limit. So even though the box can do 150 s19s and even though the solar can do 20 s19s our practical limit is 90 s19s

we are in talks with the power company to add a second 320 kva transformer to run in parrallel.

We have a longterm prepaid contract for power.
The warehouse owner had purchased 5 years of power for the icecream business he was renting freezers to.
the icecream place went out of business and he was stuck with a prepaid power contract and was not using the power. we stepped in dec 2018 and had 4 s9s. we now have quite a bit more than that.

Thanks for the info, nice deal. I can imagine industrial freezers chew up quite a bit of juice so exchanging it for a mining farm is a good one.

I'm a bit confused, you say your solar does 1.5MW for 20 S19 but grid supplied transformer 320KVA (~320KW PF1.0) is 90 S19's. Something's not quite right here.

Anyway, 500KW my head hurts just thinking about it, thats 1000 times more than my average home usage.

 ::) ;D

Ya i noticed that too, phill forgot to write the unit

instead of


it should be



another more popular term to use would be megawatt-hours, so 1.5mw / 24 = 0.0625 or 62.5kw which is enough to run 20 S19s each does roughly 3kw.

However, the last representation of numbers would need to have the word "average" in it, since his solar arrays don't actually generate 62.5kw every hour, it's probably 4-5 hours that net him the 1500kw, so you can take a wild guess and assume his arrays do 300kw/h, if those are 200w panels, then you looking at 1500 of them, that's a whole lot of panels.



No water as in liquid form would be coming out from the other end of the evap cooler, it will be cooler air with more humidity, as long as the miner's temp remains above dew point condensing won't happen, running evap coolers in humid places could be somewhat risky and would cause damage to the miners in the long run, but if the humidity levels are moderate or low, there should be no issue at all.

One thing you need to be careful about would be having a faulty internet connection while using custom firmware like Vnish, The devs of those custom firmware wanted to outsmart Bitmain by saving energy during internet outages, so they keep the fan spinning but the miner doesn't generate any heat (unlike the stock firmware), now if you got those evap coolers throwing in air with high humidity, and your miners' fans spinning, the surrounding of the miner fan will go below dew point and then kaboom.

yeah mikeywith has it right.

we backfeed to the grid 280-60= 220 .

so the 280kwatt does around 1500k-watt  in the summer maybe 1200k-watt in the winter.

so 60 k-watts is used 24/7/365 and the grid is the battery which stores the energy.

we have around 700 x 400 watt in panels. giving the 280kwatt peak number.

the main transformer is 320kva

so in the day we can do around 250kwatt  from the transformer and 60kwatt from the solar.

At night all power runs from transfomer so the max night run is about 270kwatt as no other use the transformer..

this complex is two or more acres and a few buildings.

a second mining room is across the street and does 50kwatts.

we will need a second transformer in parallel  say 320kva + 320kva

for now we are doing 160-190 kwatt in the solar/transformer grid setup

and 50kwatts min in the building on the other side of the street.

we will keep the small room with gpus a few whatsminers and l7s

the box room will gain 60 to 90 kwatts of gear. all in the box.

this will max us and we will order a new transformer to run in parrallel.


best case is

250/260 in the box

50 in room on other side of the street

all no later than oct 2023..



if that all that happens in summer of 2024 we would get the second outdoor tranformer.

giving us 500 kwatts in the box  and maybe 50-60 kwatts across the street.

all that is a maybe 🤔 but

the october numbers should be good.

Thanks for the explanations. After consideration I realised that MW/day was probably what was being discussed but thank you for confirming.

Mind blown! Thats one heck of a set-up, good luck with it.

I'll keep an eye on this thread to see the progress.

cheers.

G.

Will be interesting see how the power company handles adding a 2nd xmfr. I can't see them just strapping 2 together in parallel and running a single set of much heavier lines coming out of the pair. Parallel feeds to them from the utility HV lines sure, bonded together as a single output - no.

No matter what the incoming service panel would of course have to be upgraded and it would/will probably be cheaper and certainly easier to just have a 2nd service panel to distribute incoming power from the 2nd xmfr. Of course you will need to monitor the 2 service loads to they stay within their power limits. As I recall you have some decent 3-phase power monitors in place for that  ;)

With the incoming lines from the transformers to service panels being independent of each other, balancing the load between them is not really an issue. Just 80% max out your existing transformer and add future loads to the new xmfr distribution panel or shift some loads around if desired.

yeah we are in talks with setting up a set of 4 Tesla superchargers.

This will take us over the 320kva transformer.

State of NJ will subsidy it.
Power company would like power sales for charging cars.

May or may not happen that is the if part.

But using what we have now to the max possible (the 320kva) is going to happen.

Which will be nice.

I rather have a few smaller service panels than one huge panel, Our setup is 2 main 4-pole 1000A circuit breakers, each feeds 2*400 control panels (400A contactor attached to phase failure + voltage protection relays as well as SONOFF smart switch) and then each contactor feeds a 400A service panel which consists of 4*100A 3P MCBc (we run the netural directly from the busbar to the PDUs) each 100A supplies a 125A PDU so we have 4 PDUs for each 400A panel.

So despite having a total of 1600A on each phase, we don't have to deal with the complexity of heavy setup, just 4 small 400A service panels that we can control and shutdown individually, Keeping a perfect load balance between all of them isn't the easiest thing in the world, we were never able to keep them near even since some miners run at different clocks, some have dead hashboards, some would reboot some would not, but we were within 5-10% range most of the time.

In the current room we have
3x 220 amp panels giving a steady 225-235 volts.

they come from an 800 amp main panel doing 480 volts.  that feeds to a 160kva transformer. which feeds the  3x  220 amp panels at 225-235 volts.

we are looking to feed the box from the 800 amp 480 volt panel. and eventually shut the current room off.

box is now at a height where the venting clears the concrete foundation.


https://www.talkimg.com/images/2023/09/07/m37Lo.jpeg

What is the usual ambient relative humidity there?

okay the warehouse has a large garage door that opens to the outside.

So the humidity will match Clifton NJ humidity.

well under 45 percent most days.

But some summer days we go over 60 percent which means the water curtain will suffer a bit.
We rarely go over 70 percent humidity.

 which means the water curtain will work well over 300 close to 330 days a year.

This unit will move 40,000 cfm

and we do not have enough power to run over 75-80 s19s even though the unit claims to do 150 s19s or L7s

we have a 320 k-watt transformer to feed it which will allow us to do 250k-watts.

My gut tells me on a 95f day with high humidity we may need to down clock the gear just a little.  That means 5-15 days a year it could struggle

videos of box getting closer to it working.

https://www.youtube.com/watch?v=S_3Svub_TP0

https://www.youtube.com/watch?v=LnjSK0gldUk