Just got our new mining rig. Check out the latest pics from Aug 26

It's sitting in the warehouse now. This thing can handle up to 150 S19s or around 500 kW. I'll post some photos soon. We're planning to move 150 kW of miners from another location and then add another 75 kW. Thinking about bringing in either 25 S19 XPs or maybe going with 20 S19 XPs and 5 L7 units.

20ft by 8ft by 8ft. we will cut a hole in warehouse wall for exit air

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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

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. 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 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 top shelf and first of 4 fans second shelf same fan

one of 8 pdu's breaker box 4 shelves 8 plus in all we may lift it higher than the concrete wall to avoid cutting it. (the wall) the media for the water curtain is under the white intake slats. there is an aluminum screen to prevent bug damage to the media.