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Author Topic: Summer Mining - Home miner  (Read 855 times)
Steamtyme
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July 10, 2019, 04:13:15 AM
Last edit: July 10, 2019, 11:18:18 PM by frodocooper
Merited by dbshck (8), suchmoon (7), frodocooper (5), philipma1957 (3), OgNasty (2)
 #1

Well some may be familiar with my winter mining setup thread, the cool times have passed and I'm back to the grind with full electricity costs and heat management. Then there's the ever dreaded noise that can accompany these shiny little beasts. I had recently completed a trial run on my tunnel for exhaust and noise reduction; and am super happy with it as a working design. Running are 3 M10's and 1 M20S, off 2 basic Dlink routers. I have 2 30 Amp circuits and 1 20 Amp circuit supplying the Miners, all 240V.

Warning *** It's not pretty, but it works  Tongue

The Tunnel

What you are seeing is the 4 miners directly on the concrete slab of my garage to work as a heatsink. The insulation above/near the intakes is rigid pink to avoid fibers being sucked in the intake - I do have to adjust the left side or cut some rigid to cover that. There is roughly a 6-9 inch gap in front of the miners before I laid down 4" insulation so as to not restrict the exhaust of the miners. Sides are all 6" Mineral wool and the ceiling of the tunnel is a mix between 6" and 4"; no specific reason here just used what I had. The reason my Tunnel uses the mineral wool insulation is for the sound dampening effect it has by being a porous surface. I directed exhausts towards the walling and even created a little bend in the tunnel itself to try and improve the overall length of the path the sound waves might bounce. The reason I used metal and mineral wool for everything in front of the miners is strictly a fire precaution should the worst ever happen. The airflow is all there as well, the sides are filtered intakes. There will be minimal recirculation of air as this exhausts to the open and the heat goes up while the garage sucks off the ground level unimpeded. Don't mind the sizing of the filter I had intended to place the tunnel in a different spot, but made due with a sweet fold job.

So the list of materials here is all stuff I had a round the house apart from a 20$ shelf and 12$ in wire. Here's the list of materials you can see; you might even recognize some parts from the winter setup.

Mineral Wool Insulation - 6 battons of R20, and 3 1/2 of R14  Left over from renovations.
2 shelving racks - 1 I had previously from the winter mining setup, 1 I grabbed cheap as I like the idea of a wire rack shelf in case I needed to change the design.
25" of wire - Just some threaded wire I used to support the insulation resting on top.
Duct tape - How could I not involve it in one of my projects, would almost be sacrilegious. It's really only there for the filters at the moment. Like I said working design and what not.







Above you can see various images of the tunnel as it was first laid out and is currently operating. The meter readings are done off my phone and from left to right are - Directly in Inlet near miners, Within 3 feet of the inlet standing, Outside 5 feet from the exhaust of the tunnel, and directly at the tunnel exhaust.

This is a far cry from where I started June of 2017 with 3 working S5's and one S4+, overheating in my garage as I had little concept of the importance of heat exhausting. Up until recently I had my 3 M10's on a rack pointing into my yard out the window. This was okay but I could hear the miners within say 60 feet, mostly because I knew to listen for the humm/buzz. It annoyed me more than the family but I hated being 30 some feet away listening to them with the kids; felt a little like a jerk lol. Now I'm not worried about the noise at all. I have 2 neighbors within 60 feet of this garage door and I had all sorts of dampening plans for the driveway that I can essentially scrap.

All that remains for my adjustments are a few extra connectors to ensure a good hour of cutting for anyone trying to enter the garage unnoticed - currently I'd say it would take about 25 minutes if they're prepared. Most days my car is parked within about 18 inches of the door not allowing much chance of entry. I also ran out of screen mesh that I want to put on the outside to reduce visibility and seal up the last few spots bugs could enter.

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July 10, 2019, 05:19:33 PM
Last edit: July 10, 2019, 11:15:01 PM by frodocooper
Merited by dbshck (4), frodocooper (2)
 #2

Hmm thick mineral wool sounds interesting for sound dampening. You could make a tunnel (all for walls) and cover them with some thinner material, tho the pink foamy would work well. The rigid floor transmits noise...

Well, i guess you could just add some more wool on top of the pink, and use something for the floor.

One thing about noise blocking that doesn't block air, is angles, as in 90° angle. Place a wall of thick wool spaced away from the fans, and cover it above as well (lengthen the tunnel) while leaving the sides open for air intake. Ideally the same thing on the exhaust side, something like:

    _____________
|                   |
|      <-miners-<   |
|      <-miners-<   |
|      <-miners-<   |
|   _____________   |


Instead of just:

   _____________
                  
      <-miners-<  
      <-miners-<  
      <-miners-<  
   _____________  

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July 11, 2019, 01:47:39 PM
Last edit: July 12, 2019, 08:52:03 PM by Steamtyme
 #3

You are correct. On paper I had initially wanted to make a 90 in the tunnel itself but opted for a minimal curve when it became evident how long the tunnel would be. If the sound reduction wasn't already so good. I had plans for a 3 foot sound barrier the way your image described outside, most days my car works the same way. It would have been a fence with an old area rug draped and secured.

The reason you don't want to use the the rigid foam is it isn't as porous as a fiber fabric. My mineral wool or even fiberglass battens have a "loose" porous surface that absorbs and randomly deflects sound waves. That's where the dampening comes into place.

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July 13, 2019, 06:41:41 AM
 #4

I actually use a wind tunnel for my GPU rigs but with large industrial fans to cause the majority of the wind flow. When viewing wind tunnels for ASICs its not as efficient. What we have found most efficient is to get insulation boards and cut holes that fit the exhaust of the ASIC. Pulls air through the front, and expels the air through the back with the insulation board seperating it.

Keeping the tunnel for its sound dampening benefits, and just put the insulation board halfway with the cut outs, or partial way like where the ASICs currently are at. Would separate the hot exhaust air from the intake air.
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July 13, 2019, 06:25:48 PM
 #5

~snip~
Yeah that's pretty much the hot aisle cold aisle idea. I do have space to set something like that up. I't just not necessary for me at the moment, my exhaust goes directly outside, and I get ambient air in through the filters. So far I don't seem to be getting any recirculated air coming back in or if there is it's minimal. Intake space is nearly 3X the exhaust and pulls from either side so no chance of all airflow being recirculated air.

Does your mineral wool make dust in your sound proof tunnel?

-Brought this over- So far I'm not getting anything noticeable, any dust right now would be residual from what was in the garage already despite my cleaning. I will probably open the M10's up in a couple of weeks and see how they look. I cleaned them all before popping them in the tunnel. I did originally worry about the mineral wool itself flaking off but last winter I didn't see any evidence of that. Even with the current airflow it doesn't seem likely. I do still have a plan as I was considering trying to move the miners in a little further or build the tunnel back a bit to improve sound dampening within the garage; I'm going to use some screen to wrap any insulation on the intake side of the miner. That or reuse some of my rigid pink but it won't be as effective.
I start a week of holidays tomorrow and some renos so that might be a fun break for me this week.

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July 13, 2019, 07:19:14 PM
Last edit: July 14, 2019, 12:19:02 AM by frodocooper
 #6

don't use the pink  use this

https://www.amazon.com/Tonyko%C2%AE-Fiberglass-Fire-Blanket-39-inch/dp/B01FOILJEI

comes in lots of sizes is fairly cheap and easy to use.

cuts down dust big time.  and sound will penetrate it and get lost in the mineral wool

I always get the 78 inch by 78 inch size.

this guy has a 5 pack

https://www.amazon.com/Pack-Blanket-Suppression-Fiberglass-Cloth/dp/B07QY6KFNP

and a 3 pack

https://www.amazon.com/JJ-CARE-Blanket-Suppression-Fiberglass/dp/B07QX4RBHV

40 by 40

but I like the 78 by 78 listed first.

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July 13, 2019, 09:13:57 PM
 #7

Thanks - I actually have a couple of those kicking around. 1 I've used to place under a rig and the other I believe I used as a "tablecloth" under the blue mat in my vids/photos. I'll play around and see what I come up with. I'd likely be able to just fold it in nice and easy.

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July 13, 2019, 10:18:50 PM
 #8

Thanks - I actually have a couple of those kicking around. 1 I've used to place under a rig and the other I believe I used as a "tablecloth" under the blue mat in my vids/photos. I'll play around and see what I come up with. I'd likely be able to just fold it in nice and easy.

good lets us see some photos of it once you do it.

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July 16, 2019, 01:54:56 PM
 #9

That seems like a lot of work to do - makes me glad I have the space to have a separate building on my property. I am finally getting around to adding the insulation (it's been sitting in the corner for almost 6 months) I bought another exhaust fan which I plan to actually reverse and use it to put air into the room - right now I am on the verge of pushing more air out than I am pulling in and I doubt that is a good thing.

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July 17, 2019, 02:59:33 PM
 #10

That seems like a lot of work to do - makes me glad I have the space to have a separate building on my property. I am finally getting around to adding the insulation (it's been sitting in the corner for almost 6 months) I bought another exhaust fan which I plan to actually reverse and use it to put air into the room - right now I am on the verge of pushing more air out than I am pulling in and I doubt that is a good thing.

Well in theory (filtered) positive pressure would keep the dust out... And your doors will want to open lol.

It isn't necessarily bad, you are just spending a bit more electricity forcing in more air than whats is needed.

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July 17, 2019, 03:41:28 PM
Last edit: July 17, 2019, 11:01:39 PM by frodocooper
 #11

right now my door is being sucked shut - the miners all vent directly to outside - I have one fan putting air into the building but its not enough - it was enough when i had around 15 miners but now with 20, its lacking so thats why I will be replacing the AC unit in window with a second fan. its variable speed so I can slow it down to where the door is not be pushed out nor sucked in.

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July 18, 2019, 07:37:49 PM
 #12

That seems like a lot of work to do ~snip~

Not to bad overall. Typical me I spent way more time thinking about it than actually putting everything together took maybe 1 1/2 hours to lay it out and relocate the miners a whopping 12 feet lol. More or less this was me just laying things out to test and running with it; the sound dampening was better than expected and that was the #1 concern. This additional dust/insulation worry on the intake is more just extra precautions. I have to open up 1 of the M10's this week - more guesses as opposed to actual troubleshooting support so I'll have an idea of how bad the dust accumulation might be. I'm guessing minimal.
Is your insulation for sound proofing the building? Variable speed fans are nice as long as they have a good "drive" 1 of those bad boys goes and it really hits the efficiency savings.

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July 18, 2019, 09:56:49 PM
 #13

Lot's of great noise reflection in the garage. Mostly I don't care about unless my wife does of I know I have be in there a while. First thing I did was seal my door frames. I though about building a box but I intake outside air and exhaust into the attic out the gable. There are some thinner wool insulation products out there you could line the bottom with or use sound deadening sheets like they for cars, no need to adhear them of course.

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July 19, 2019, 01:58:07 AM
Last edit: July 19, 2019, 10:42:59 AM by frodocooper
 #14

... Is your insulation for sound proofing the building? Variable speed fans are nice as long as they have a good "drive" 1 of those bad boys goes and it really hits the efficiency savings.

not for soundproofing just trying to block the heat - the building is about 50 to 60 feet from my house so I cannot hear it inside, I can from the back porch though lol its more to block radiant heat - similar to this https://www.homedepot.com/p/Reach-Barrier-48-in-x-250-ft-Silvertanium-Reflective-Attic-Insulation-Roll-3023/203536782

This is the fan that I use - they are were meant to be exhaust fans but I turn it to face in, remove the shutters and put a 20" x 20" filter in front of it to help with the dust

https://www.amazon.com/gp/product/B01G8I7HQW

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October 29, 2019, 08:52:04 AM
 #15

Well this season is done. I hate the fall for the fact that I can't find a stable temperature. A few days ago it was to warm to have anything in my house, then all of a sudden it's to cold to keep everything running in the garage under the summer setup. So my quick stop gap was to remove the miners from the slab floor in the garage place them on a 1/2 inch insulation board, and flip 1 of my M10's around to actually heat the garage - outside of the soundproofing setup. So far so good, no more issues. I also choked off half of my air intake as cooling is no longer an issue. For reference outside temperatures have been dropping down to ~ -4C

So within the next couple days I will reopen The winter mining setup, which will be a significant improvement in sound dampening. Seeing as Whatsminer hasn't come out with a LPM mode for the M20S and I like to gamble with my wife's patience lol. I also have a new to me PDU on order so I can break out the 741's that have been collecting dust the last few months.

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