running antminer s5 with no fan? | Bitcointalksearch.org

IITravel01

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Quote from: sase007 on January 20, 2016, 11:19:06 AM

Few things:
Firstly, this will destroy ANY warrenty you have oon the product, so if it damages chips they cannot be replaced.
The miners don't tend to run very well without fans,I think that they usually either shutdown, ore make beeping noises.
Also, I understand that there may be exposed cabling on the antminers, so uou will have to use a dense oil (possibly higher than petrol's density), otherwise it could combust!

Just for those that might not understand, you need to use a special mineral oil that doesn't conduct electricity. Most oils probably would instantly destroy your electrical equipment and may result in an instant, hard to put out, blaze. I believe the viscosity of the mineral oil used in oil submersion computing is pretty thin, closer to water than to motor oil.

sase007

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Quote from: aknnig on January 20, 2016, 05:16:05 PM

Phase A (make s5 start mining in oil) completed.

Here is a simple workaround that made my s5 run in an oil bath.
1) I took an old 3 pins fan, remove the blades and plug it into s5's fan position 1. Kept it in air while running. Virtually no noise, since no blades.
2) Connect stock fan to s5's fan position 2 to move the oil. No noise from here either.

The s5 runs fine till I stop it due to high oil temperature after sometime.

Now I will start with phase B, remove the heat from the oil and make the whole system more stylish

You could probably use a water jacket for cooling. This is another pipe, outside of the oil pip, that allows running water to run around the oil, cooling it down to around room temperature.

This may actually use up less energy than the radiator that you plan to use.

Other than that, sounds quite good what you have already done!

aknnig

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Phase A (make s5 start mining in oil) completed.

Here is a simple workaround that made my s5 run in an oil bath.
1) I took an old 3 pins fan, remove the blades and plug it into s5's fan position 1. Kept it in air while running. Virtually no noise, since no blades.
2) Connect stock fan to s5's fan position 2 to move the oil. No noise from here either.

The s5 runs fine till I stop it due to high oil temperature after sometime.

Now I will start with phase B, remove the heat from the oil and make the whole system more stylish

yslyung

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Quote from: aknnig on January 20, 2016, 11:13:56 AM

yslyung: First attempt indicates that just putting the whole s5 into oil does not work. Motherboard seems to demand air-based RPM, which is not possible in oil, for the large stock fan.

i said to extend the wires from controller to fan & use the fans to cool radiator ... then u get "air-based rpm" & so called trick the controller.

just submerge the blades i did not say to submerge the whole miner like the russian video.

now i'm confused ?

beffje

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All bitmain sh...t has 3 months as a remember.

sase007

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Quote from: beffje on January 20, 2016, 11:45:14 AM

Nice a S5 still in the warrenty Huh

Yes! I think so!
Bitmain have to have at least a 12 month warrenty.
The last batch of S5s were released around 6 months ago.
This means that they are still in warrenty.

beffje

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Nice a S5 still in the warrenty Huh

sase007

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Few things:
Firstly, this will destroy ANY warrenty you have oon the product, so if it damages chips they cannot be replaced.
The miners don't tend to run very well without fans,I think that they usually either shutdown, ore make beeping noises.
Also, I understand that there may be exposed cabling on the antminers, so uou will have to use a dense oil (possibly higher than petrol's density), otherwise it could combust!

aknnig

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VirosaGITS: Thanks for the comment. I have started to read myself up on the fans, to find the possible options :-)

yslyung: First attempt indicates that just putting the whole s5 into oil does not work. Motherboard seems to demand air-based RPM, which is not possible in oil, for the large stock fan.

yslyung

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mod the wire of the fan then use the fan to cool the radiator. 2 birds with 1 stone.

agree with the vertical setup. i'm also considering to make a small project using oil immersion just for the fun of it but a little more proper than the 1 in the video.

ideas n suggestions are most welcomed.

VirosaGITS

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Quote from: aknnig on January 19, 2016, 03:42:17 AM

Thanks all for the nice comments.

NotFuzzyWarm: Agree, very good comment. The original heat sink ribs will prevent an upwards oil flow in the horizontal position.

VriosaGITS: I thought more about putting a resistor there. The question is then what kind of resistor and resistance is most appropriate.

BitcionLover: Could be. I take this as a “scientific” experiment

I do not know if a resistor would give a RPM reading. I am not knowledgeable enough to tell you how electronically, the PMW reading is sent and received. I'm guessing its a pulse set at a certain frequency. The controller board then interpret to a #RPM based on that.

Such hack would be definitively simple to setup, but i dont know if it would work. You will need a fan in there either way so that the oil move through the heatsink, so i would just pick one that will do it without too much noise.

aknnig

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Thanks all for the nice comments.

NotFuzzyWarm: Agree, very good comment. The original heat sink ribs will prevent an upwards oil flow in the horizontal position.

VriosaGITS: I thought more about putting a resistor there. The question is then what kind of resistor and resistance is most appropriate.

BitcionLover: Could be. I take this as a “scientific” experiment

adaseb

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I dont understand why go thru all the trouble when you can get buy a S5 waterblock and just get it water cooled with a small radiator.

Laviathon

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Quote from: NotFuzzyWarm on January 18, 2016, 10:40:58 PM

Quote from: IITravel01 on January 18, 2016, 09:18:56 PM

https://www.youtube.com/watch?v=HkucIueuVU4 or you could leave the fans on.

WTH?

What a freakin' idiot...

A) Those poor poor miner fans in the tank! The are not made for turning a miner into a jet ski! Yeeesh Roll Eyes

Go with the miner vertical. Natural thermal convection will move a surprising amount of fluid without needing to thrash it through. Coupled with flow a correct size pump will provide and you are all set.

B) Ja it looks like the setup in the vid is using a small car radiator - along with the OEM car radiator fans. Not exactly made to be quiet...

I have seen that video before. That is pretty crazy.

NotFuzzyWarm

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Quote from: IITravel01 on January 18, 2016, 09:18:56 PM

https://www.youtube.com/watch?v=HkucIueuVU4 or you could leave the fans on.

WTH?

What a freakin' idiot...

A) Those poor poor miner fans in the tank! The are not made for turning a miner into a jet ski! Yeeesh Roll Eyes

Go with the miner vertical. Natural thermal convection will move a surprising amount of fluid without needing to thrash it through. Coupled with flow a correct size pump will provide and you are all set.

B) Ja it looks like the setup in the vid is using a small car radiator - along with the OEM car radiator fans. Not exactly made to be quiet...

IITravel01

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Quote from: generalt on January 18, 2016, 09:57:21 PM

Quote from: IITravel01 on January 18, 2016, 09:18:56 PM

https://www.youtube.com/watch?v=HkucIueuVU4 or you could leave the fans on.

Wow I was thinking it would be a quiet setup.

I don't know where the sound is coming from, I don't see the radiator fans moving and the fans in the oil probably aren't making all that noise (or any).

generalt

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Quote from: IITravel01 on January 18, 2016, 09:18:56 PM

https://www.youtube.com/watch?v=HkucIueuVU4 or you could leave the fans on.

Wow I was thinking it would be a quiet setup.

IITravel01

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https://www.youtube.com/watch?v=HkucIueuVU4 or you could leave the fans on.

VirosaGITS

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Quote from: BitcoinLover 1337 on January 18, 2016, 07:55:56 PM

I think this will cause a lot of heath which you cold use only in winter like this maybe Cheesy

He is basically thinking of making a water cooling like system with oil and, well pretty much a ghetto jury rig. It could work fine, although its a lot of work but little gain, it could be fun to do.

BitcoinLover 1337

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I think this will cause a lot of heath which you cold use only in winter like this maybe Cheesy

VirosaGITS

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Quote from: aknnig on January 18, 2016, 06:45:54 PM

Hi.

I plan to start a project of creating an oil cooled antminer s5 system, mostly for fun and educational purposes. I want to see, through transparent oil, my ant miner creating bitcoins in my living room with nearly no sound

The present plan is easy.

1) Submerge an antminer s5 into a bath of oil.
2) Cool down the heated oil by other means. I plan to use a (car?) radiator where I will pump the heated oil through using a small fan submerged in oil.

Challenge 1.
I want to remove the original 120mm fan attached to s5. I think that it will be too strong and disturbing if running inside the oil bath.

Questions.
1) Will s5 still run OK when the stock fan is disconnected from the system and the power pins for the fan left open?

2) If "no" in 1, is it a simple way to trick s5 to make it works with no fan?

3) If I want to use the power pins meant for the original 120mm fan to drive another smaller fan (to pump the oil through the radiator), are there some important requirements the smaller fan needs to fulfill?

Any comments from you will be highly appreciated.

Best regards,
aknnig

1) No. It need FAN1 connected
2) If leaving a fan connected is a simple trick, then yes.
3) It has to be a PMW fan i guess.

NotFuzzyWarm

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Evil beware: We have waffles!

Sounds good. Keep the miner vertical so a thermal siphon is setup to help move oil over the heat sinks.

For radiators & fans, check FrozenCPU or Koolance.com Both have liquid systems that can handle over 2.5kw. With large diameter fans on the radiator (or hung out a window during winter) it should be pretty quite. When using oil make sure it is low viscosity or standard CPU/GPU pumps are not going to be happy.

aknnig

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Hi.

I plan to start a project of creating an oil cooled antminer s5 system, mostly for fun and educational purposes. I want to see, through transparent oil, my ant miner creating bitcoins in my living room with nearly no sound

The present plan is easy.

1) Submerge an antminer s5 into a bath of oil.
2) Cool down the heated oil by other means. I plan to use a (car?) radiator where I will pump the heated oil through using a small fan submerged in oil.

Challenge 1.
I want to remove the original 120mm fan attached to s5. I think that it will be too strong and disturbing if running inside the oil bath.

Questions.
1) Will s5 still run OK when the stock fan is disconnected from the system and the power pins for the fan left open?

2) If "no" in 1, is it a simple way to trick s5 to make it works with no fan?

3) If I want to use the power pins meant for the original 120mm fan to drive another smaller fan (to pump the oil through the radiator), are there some important requirements the smaller fan needs to fulfill?

Any comments from you will be highly appreciated.

Best regards,
aknnig

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