Ducting

[VirosaGITS]

Nice, someone doing it the right way. Just Kudos. I was just trying to explain this to someone else earlier today, it's like trying to reason with an hysterical kangaroo. Let me try this new merit thing on you. Edit: Seem like i can't send much but i did. Anyways, Good Job.

[A.Delaney]

8" insulated ducting is about a foot in dia once you add the insulation. Im guessing it would take 15' or so to make a nice loop exiting in the same direction as the entry to keep air flowing. It comes in 25' lengths so I'll see what happens. I'll need to get a DB meter to measure the actual noise reduction. I don't have one. Its gonna take up some space for sure.

[caxibrema]

My friend will be adding the duct adapter to Thingverse, so just search for Antminer. It should be there soon.

Any updates on the 3d model on thingsverse?

[Raymond_B]

Nice, someone doing it the right way. Just Kudos. I was just trying to explain this to someone else earlier today, it's like trying to reason with an hysterical kangaroo. Let me try this new merit thing on you. Edit: Seem like i can't send much but i did. Anyways, Good Job.

Thank you!!

@caxibrema I will ping him right now.

[Raymond_B]

Any updates on the 3d model on thingsverse?

I just hit him up, he's going to try to get it uploaded tonight. Sorry for the delay, but he'll do it, eventually

[Raymond_B]

Quick update, went back outside and measured the noise. It's as I thought, no difference between inside and outside DB levels.

To be clear though, the ASICs are only 2.5' or so from the wall so the ducting is very short. Also these are venting in to a 3 sided carport, which turns out to be good as that insulates most of the sound unless you are in direct line of sight of the duct outlet.

So, outside measurements are:

20'  65DB
10' 70DB
1' 79DB

Roughly 40' at my fence-line looking directly at the exhaust outlet 55DB. Going the opposite way, with carport door closed and on the other side in my backyard 20' 45DB. For my location and township I am well within code and no issues with neighbors

[r01k]

Looks like a very good design. I was planning to switch from 4" to 5" but after seeing this will go with 6". How is shroud attached to the fan?

[Raymond_B]

Looks like a very good design. I was planning to switch from 4" to 5" but after seeing this will go with 6". How is shroud attached to the fan?

It uses the 4 screws that hold the fan to the body.

[Raymond_B]

Alright, my friend decided he wanted to sell the shrouds rather than put the file up on Thingverse. For those waiting for the file, sorry I have to respect my friend's wishes

I will post a for sale link in the marketplace

[CrypotoCreanis]

Alright, my friend decided he wanted to sell the shrouds rather than put the file up on Thingverse. For those waiting for the file, sorry I have to respect my friend's wishes

I will post a for sale link in the marketplace

Link?  I am interested in the 6"

[Raymond_B]

Link?  I am interested in the 6"

Here's the link to the Marketplace thread https://bitcointalk.org/index.php?topic=2853173.0

[VirosaGITS]

How else can you solve the problems with humidity?

I live in one of the most humid northern places, i've never had a problem. I think the humidity can be a risk if the miner is hot and the air is under 0C. I believe condensation can occur because the miner is hot and then water pellets freeze there. So when you turn it back on, it may cause a short circuit.

I by no mean am an expert on this particular subject, but i can say with assurance the big miners do not filter their intake either, it takes too much intake surface area out. And i'm not actually sure removing the humidity is feasible at all in the first place, because all proper setups will vent the heat out. So as you try to remove it, an infinite intake of it will keep getting in.

Extracting heat from air in a closed environment to be able to remove all humidity sound like incredibly expensive hardware and upkeep costs.

[HoleShot]

Please refer to the Dew Point description here.
https://en.wikipedia.org/wiki/Dew_point

If your intake air is 100% relative humidity, you only need to raise the air supply temperature about 5C to eliminate condensation formation. If you have the intake and exhaust of all your miners fully isolated, you can add a small fan to return a little of the exhaust air back into the intake plenum to provide the needed intake temperature rise. Really, you should heat the intake air whenever the humidity reaches 90% or whenever the Dew Point / Temperature spread is <5 degrees.

Filters are good. They must either be relatively huge or fan powered. I prefer to use a heavy metal grid to keep bad people and animals out, then a smaller gauge metal grid to stop the big stuff then finally the filter.

[A.Delaney]

Raymond: Is your buddy still printing those 6” shrouds? I could use a couple.

[Raymond_B]

Raymond: Is your buddy still printing those 6” shrouds? I could use a couple.

Yes sir he is, although I have asked him to start using ABS as my M3s deformed the other material. If you do order let me know and I'll double check he uses ABS.

Link https://www.thegeekpub.com/product-category/mining-hardware/antminer-accessories/

[A.Delaney]

Yes sir he is, although I have asked him to start using ABS as my M3s deformed the other material. If you do order let me know and I'll double check he uses ABS.

Link https://www.thegeekpub.com/product-category/mining-hardware/antminer-accessories/

Ok I ordered 4.

[Raymond_B]

Ok I ordered 4.

I texted him to make sure they are ABS

[A.Delaney]

I texted him to make sure they are ABS

Ok great thanks.

[Raymond_B]

Ok great thanks.

He's using ABS now, here's a few pics of the new material. I had also asked him to reduce the OD slightly to make it easier to fit ducting over it, previously it was a little too tight. He said he thinks your's should go out this weekend. He is a stickler on quality so they take like 9 hours to print! High volume is not his goal

[A.Delaney]

It looks great. Cant wait to get them. 9 hours is a long time to print. I can see where high volume would be hard to do.