Below Freezing Point Temperature For Miners..What Would Happen?

Steamtyme

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Quote from: antened on October 22, 2017, 11:47:35 PM

I am in story as well, testing this winter in Winnipeg Cheesy

I'm only a couple hours away, I'm planning on moving my miners into the basement and running them to my furnace intake. I know they were loving the cold nights the past few weeks. I never did start them in freezing temperatures though.

GOP17

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Quote from: BitcoinIntern on October 02, 2017, 11:04:27 AM

What would happen if the miners were in an environment below freezing point i.e. 32 degree Fahrenheit?

lemmy reaqctivate my cryolab1

antened

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I am in story as well, testing this winter in Winnipeg Cheesy

Logan4el

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If they stay in cold inactive they will not switch on later until you heat them. But if they are active and working I believe nothing can go wrong. So it is important to have electricity 24/7.

I am very interested how loud my asics will work in freezing cold. I will check this during winter.

Marvell2

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Quote from: Upstream on October 03, 2017, 07:17:07 PM

Quote from: GoodOne on October 03, 2017, 06:22:57 PM

Quote from: Upstream on October 03, 2017, 03:13:59 PM

Great news. Yes I am putting 30 Antminers in a shipping container, sometimes it will have complete loss of power, so I have been very worried about possible thermal cycling killing the units.

Cheers

30 Antminers? Nice

Won't 30 units heat that container?

What is average temperature inside and outside container?

p.s.Loss of power sucks... how do you solve it with that container?

Yes they will heat the container when running, that's not the problem. When it shuts down the temp can be as cold as -40 deg C (live in Canada). I am just crossing my fingers that the S9's circuitry can survive that temp...

What about summer ? winter mining is trivial , its spring and summer than separates the men from the boys

Upstream

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Quote from: GoodOne on October 03, 2017, 06:22:57 PM

Quote from: Upstream on October 03, 2017, 03:13:59 PM

Great news. Yes I am putting 30 Antminers in a shipping container, sometimes it will have complete loss of power, so I have been very worried about possible thermal cycling killing the units.

Cheers

30 Antminers? Nice

Won't 30 units heat that container?

What is average temperature inside and outside container?

p.s.Loss of power sucks... how do you solve it with that container?

Yes they will heat the container when running, that's not the problem. When it shuts down the temp can be as cold as -40 deg C (live in Canada). I am just crossing my fingers that the S9's circuitry can survive that temp...

GoodOne

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Quote from: Upstream on October 03, 2017, 03:13:59 PM

Great news. Yes I am putting 30 Antminers in a shipping container, sometimes it will have complete loss of power, so I have been very worried about possible thermal cycling killing the units.

Cheers

30 Antminers? Nice

Won't 30 units heat that container?

What is average temperature inside and outside container?

p.s.Loss of power sucks... how do you solve it with that container?

BitcoinIntern

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I have heard that the hash rate of the miner goes down in a cold environment. So I guess one of us will need to experience this practically to figure this out.

Upstream

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Great news. Yes I am putting 30 Antminers in a shipping container, sometimes it will have complete loss of power, so I have been very worried about possible thermal cycling killing the units.

Cheers

fanatic26

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You should be fine if you can warm the units up before starting. Just remember that it might take a while to passively heat the units up if they were offline for an extended period of time. The heatsinks will retain cold just like they do heat.

Upstream

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Quote from: fanatic26 on October 02, 2017, 12:10:53 PM

Temps are not a problem if the machines are running. The problem is if a machine stops hashing for any reason and the boards end up ice cold. The processing chips will RAPIDLY heat up while the rest of the board might take a bit. This temperature inequality will cause damage.

Fanatic, as long as we first let the miner get back up to room temp before starting, do you think things will be fine? I guess I mean, would the thermal cycling alone (even if not started up) possibly cause thermal stresses and issues with the solder or other circuitry?

I also have an application that the miner will get very cold when they are shut down. I do plan on waiting until they are at least room temp before restarting them however.

Philopolymath

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Zmkarakas

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Quote from: Philopolymath on October 02, 2017, 06:40:26 PM

Ask me again in a few weeks...

Are you in Canada? Grin

Philopolymath

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Walter Russell's Cosmogony is RIGHT!

Ask me again in a few weeks...

spazzdla

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The change in temp is not great I am under the impression of.. Like -30 air hitting 40 degree metal won't go well.

fanatic26

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Temps are not a problem if the machines are running. The problem is if a machine stops hashing for any reason and the boards end up ice cold. The processing chips will RAPIDLY heat up while the rest of the board might take a bit. This temperature inequality will cause damage.

philipma1957

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Quote from: Zmkarakas on October 02, 2017, 11:31:26 AM

Quote from: sidehack on October 02, 2017, 11:29:06 AM

That would only be a problem if the miner isn't mining but the fans are still running. The heatsinks get hot enough to almost boil water during regular operation.

Then why do some manufacturers put minimum working temperatures like -5 or -10? From your perspective, the miners could run even on -40. I do not think the heatsinks will get that hot under such extreme temperatures even if the mining process is on.

And possibly under such temperatures, only the board itself will retain heat, and heatsinks will be cold

well at -100f you may be correct.

the minimum number is more due for startup then an other issue.

if I have a piece of gear in a 20f room for a day and it is fully 20f starting it is hard on the gear.

I suspect expansion and contracting would be far more extreme in a 20 f room when ever gear is turned off or crashes it will contract quite a bit more then it would in a 65f room.

I ran gear in the winter exposed to 5f temps. let me find a photo. if the gear crashed I had to shut the door to let the gear get warm enough to start back up

door open in winter
https://i.imgur.com/ysryBV5.jpg

door closed
https://imgur.com/qcbgINt.jpg

Zmkarakas

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Quote from: sidehack on October 02, 2017, 11:29:06 AM

That would only be a problem if the miner isn't mining but the fans are still running. The heatsinks get hot enough to almost boil water during regular operation.

Then why do some manufacturers put minimum working temperatures like -5 or -10? From your perspective, the miners could run even on -40. I do not think the heatsinks will get that hot under such extreme temperatures even if the mining process is on.

And possibly under such temperatures, only the board itself will retain heat, and heatsinks will be cold

sidehack

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That would only be a problem if the miner isn't mining but the fans are still running. The heatsinks get hot enough to almost boil water during regular operation.

Zmkarakas

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Another possible problem I could think of is that water in the air passing thru the heatsinks could freeze at some point, and continue freezing until no more air can pass through the miner. I think it is possible even if the air is moving fast

Topic: Below Freezing Point Temperature For Miners..What Would Happen? (Read 963 times)