BitcoinSoloMiner (OP)
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November 02, 2021, 09:03:08 PM |
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We are looking at renting office space for s19j pro
There is a lack of air flow (fresh air) but there is air conditioning
Does air conditioning cause problems for miners?
The room is fairly small about 13 feet by 13 feet
Will the room be able to accommodate 1 miner? How about if the operation was scaled anywhere up to 5 miners?
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HagssFIN
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November 02, 2021, 09:05:21 PM |
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Never try to solve the heat dissipation with AC.
You need good airflow with a fan system. Take cold air in and push hot air out, roughly said.
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NotFuzzyWarm
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November 02, 2021, 10:01:01 PM Last edit: November 12, 2021, 02:10:35 PM by NotFuzzyWarm |
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The s19 is essentially a 3.2kw space heater with EACH putting out 10,918.85 BTU of heat... As Hagss said, whatever AC the building supplies will not be able to keep up with that kind of heat output. It's just not designed for it.
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HagssFIN
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November 06, 2021, 01:46:35 PM |
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No.
I feel like a parrot, but please read my previous post once again.
And did you miss what NotFuzzyWarm said?
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danieleither
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November 08, 2021, 07:27:16 PM Merited by NotATether (5) |
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I'm going to agree and disagree with some of the responses here. It is possible you 'could' get away with running ONE miner in a small office without additional cooling equipment, but this would really depend on how powerful the aircon unit is and the ambient temperature / climate of your country, but it's far from ideal.
I've had miners running temporarily (but for several weeks) in rooms with no ventilation or AC and no problems at all (UK climate).
Also, one of my small farms here in the UK is totally passively cooled (no extractor fans or AC). I have 54 miners at this location, 36 of those have a 3D printed adapter screwed directly to the exhaust fans which gives a 150mm tube output, onto which I have clamped flexible tubing which runs to an external louvre (so basically these 36 miners vent hot air directly to outside using the power of there own fans). I then have a further 18 miners in the same room which literally sit on a shelf and exhaust hot air into the room. There is of course a large passive air inlet also, but everything is stable. Air is circulated by the miners' fans only. It's a very large room and it does get hot in there, but from what I've seen the 17-series miners are more reliable when running hot anyway, in fact of those 36 x 17-series units (24 x S17e and 12 x T17+) I've only had 1 fault (a dead PSU) in the 1.5 years they've been running. In contrast, I've got a fair few S19's which are much newer and had several problems including dead PSU's and dead hashboards, these are at locations with powerful air-cooling. So it could be argued that miners are better running hot, who knows...
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BitcoinSoloMiner (OP)
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November 10, 2021, 09:38:13 AM |
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Thanks for your responses. We are going to try a floor standing air conditioning unit to support the built in ac unit.
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BitMaxz
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November 10, 2021, 04:05:44 PM |
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Thanks for your responses. We are going to try a floor standing air conditioning unit to support the built in ac unit.
The link that you posted above with amazon it's a portable AC I have experienced using it with my miner in a small room. Actually, it didn't help to cool down the room you will feel both hot and cold and it makes your miner sticky I believe that it's because of portable AC that adds moisture to the air. That is why I decided to use an exhaust instead to take all the hot air out of the room and stop using AC for miners. But you can try if you don't understand what they told you above.
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Heathen23
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November 12, 2021, 01:18:44 PM Last edit: November 12, 2021, 01:57:53 PM by Heathen23 Merited by NotATether (5) |
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Without help from outside cold you can't mine in finished areas like a home or carpeted and insulated office space. In hot area you may be able to mine in unfinished area like an industrial warehouse where you can install large industrial fans to improve airflow. I still don't understand how people mine at home in Florida or Texas where they have no winter. But then people are mining in Dubai. they must have a solution if they are mining at home. For me the a/c cannot help the moment outside reaches 80.
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YOSHIE
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November 13, 2021, 08:52:39 AM |
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Will the room be able to accommodate 1 miner? How about if the operation was scaled anywhere up to 5 miners?
@HagssFIN, already advising you, never use a 13x13 indoor air conditioner, it's risky and never use a way to cool your crypto miner computer/GPU with cold air without filters and open spaces. Using air conditioning without an open space can cause dust to accumulate, this can cause the computer/GPU to be hampered from cooling itself, can automatically cause excessive heat during the mining process. It's better if you use a small fan with the window open, to blow away dust and not stick to the device, maybe it's safer that you use it, than using air conditioning without an open space.
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HagssFIN
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November 13, 2021, 10:49:27 AM |
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Yeah I think it is stupid that the OP did not actually want to listen for the most optimal solution, but he waited for an answer which suited the best for his decision on using AC. The decision which I think he had already made before asking the opening question.
But hey, it is often like that here at Btctalk when you try to help the new guys...
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philipma1957
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November 14, 2021, 05:03:58 PM |
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Well I read the Amazon link to the 10000 btu ac.
It has an exhaust duct.
So it will dump hot air out of the duct.
So to the op would you be able to use the provided duct and send the hot air out of the room?
If you can vent the duct on that portable ac out of the room where would it go?
If it goes into a second room that room will be very hot and humid.
If the duct can exit the building you would get it to work.
But your post said no venting so I would say it will not work.
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fjzappA
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November 16, 2021, 04:17:31 PM Merited by NotATether (5) |
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Airflow to the environment is your only answer.
I rented a warehouse space with 100KW 3-phase electrical service. In Texas. Airflow in and out is all you need. Filter the air and keep dust out of your units. Still need to clean them occasionally.
Bitcoin mining is the process of turning electricity into money. AC cooling will triple or quadruple your power bill, likely sending your costs beyond your profits.
Standalone portable AC units need to exhaust their heat somewhere, if you are exhausting this outdoors, then you can exhaust the miners outdoors.
Experiences
- Miners slow down a bit when ambient air is 100F - Miners don't do well when ambient air drops below 32F because of heat stresses across the board from one end to the other. Too much temperature gradient.
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philipma1957
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November 16, 2021, 04:50:27 PM |
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Airflow to the environment is your only answer.
I rented a warehouse space with 100KW 3-phase electrical service. In Texas. Airflow in and out is all you need. Filter the air and keep dust out of your units. Still need to clean them occasionally.
Bitcoin mining is the process of turning electricity into money. AC cooling will triple or quadruple your power bill, likely sending your costs beyond your profits.
Standalone portable AC units need to exhaust their heat somewhere, if you are exhausting this outdoors, then you can exhaust the miners outdoors.
Experiences
- Miners slow down a bit when ambient air is 100F - Miners don't do well when ambient air drops below 32F because of heat stresses across the board from one end to the other. Too much temperature gradient.
Op said one unit or 3.3 kwatts. He does not mention power cost. If he puts in a 10,000 btu portable ac along with the ac that flows into the room. The room should be cool assuming he dumps the heat via the attached vent to the portable ac. is it efficient no. but power cost may not be an issue. will the extra ac cool the room if he vent the ac exhaust into the room no. Ac moves cold in and dumps heat out. the vent on the portable ac is clear in the photos. his idea will do 1 s19 if that vent dumps the air out of the building. his idea will not do a s19 if the ac vent does not dump the air out of the building.
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fjzappA
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November 16, 2021, 05:52:14 PM |
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his idea will do 1 s19 if that (AC) vent dumps the air out of the building. his idea will not do a s19 if the ac vent does not dump the air out of the building.
If you can dump AC vent outdoors, then you can dump Miner air outdoors and that's all that OP needs. That said, if power cost is zero, then cool it all you want.
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BitcoinSoloMiner (OP)
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June 10, 2022, 09:49:54 PM |
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The built in air conditioning worked very well to cool 15x rx6600 and 3x antminer s19j pro
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ahgmx01
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July 20, 2022, 05:19:43 PM Merited by NotATether (2) |
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It could cause you problems, the thermal shock generates humidity and therefore affects the electronics of the PSU
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NotFuzzyWarm
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July 20, 2022, 08:57:02 PM Last edit: July 21, 2022, 02:43:51 AM by NotFuzzyWarm Merited by NotATether (2) |
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It could cause you problems, the thermal shock generates humidity and therefore affects the electronics of the PSU Random and very incorrect speculation written by someone who has no understanding of cooling processes. 'Thermal shock' has nothing to do with humidity but it *can* affect connections and solder joints. Thermal shock is the result of different materials that are in contact with or bonded to each other expanding/contracting by different amounts when their temp is changed. Stress in the joint builds up and later released when temp cycles up and down. Thing is, the temperature swings needed to be rather significant, happen often, and relatively rapid to cause it - as in at least several 10's of degrees per minute. Yes if the AC is pointed directly into the intakes of a miner and the AC frequently cycles on & off then you could introduce thermal shocks to the components. As for the 'humidity' bit -- if you mean condensation and if the AC is oversized enough to be running for just a short time followed by long times of being off then yes, excessive humidity not removed by the AC remaining in the air could very well condense on any cold surfaces and cause problems.
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ahgmx01
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July 21, 2022, 10:13:35 PM |
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The thermal shock does not have to do with humidity? ![Shocked](https://bitcointalk.org/Smileys/default/shocked.gif) are you serious? I think you need to go back the college and take thermodynamics classes.
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NotFuzzyWarm
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July 22, 2022, 12:35:35 AM Last edit: July 24, 2022, 01:16:22 AM by NotFuzzyWarm Merited by NotATether (1) |
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The thermal shock does not have to do with humidity? ![Shocked](https://bitcointalk.org/Smileys/default/shocked.gif) are you serious? I think you need to go back the college and take thermodynamics classes. Riiigggghhhttt... Only been designing/building industrial power electronics and cooling systems for them since 1975 so... ![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif) Yes the moisture content (humidity) of an airflow does impact its heat transfer rate as the air stream flows over a surface (here, heatsinks) - more specifically, it changes heat-capacity of the air - and as such deserves consideration when designing the heatsink structures, their surface areas and type of airflow needed BUT that has nothing to do with the purely mechanical nature of what thermal shock is. For a top of the Google list reference see https://www.corrosionpedia.com/definition/1079/thermal-shock They are two very different and separate design points to consider... Thermal shock is induced by fast and sizeable thermal cycling - not cooling efficiency at any given point in time. If the temperature swing is extreme, rapid, and the material is a particularly fragile & poor conductor of heat - say a glass heated to a couple hundred degrees and then plunged into water - the material cracks/shatters from the wildly uneven stresses that are induced by thermal shock. For less fragile materials the damage per-thermal cycle is usually far lower but it *does* add up if the material is not self-healing. Back to the main point of the thread, an AC system needs to be properly sized for where it is operating and the design heat load + a reasonable reserve margin. If sized correctly and one is not sucking in too much unaccounted for tropically hot & damp air from say, a swamp next door, the humidity in the room where the miners are will be very low no matter where on the planet you are because the AC runs long enough to remove the moisture. The primary problem that excessive humidity can cause- condensation leading to corrosion - is eliminated.
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