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Author Topic: Why not to use AC with Bitcoin Mining?  (Read 3266 times)
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December 15, 2016, 02:03:45 AM
 #1

I've seen several people mention that using AC is not a good choice for Miner cooling, could someone explain why? (Don't worry, my current mining rig uses fans)

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December 15, 2016, 02:45:47 AM
 #2

I've seen several people mention that using AC is not a good choice for Miner cooling, could someone explain why? (Don't worry, my current mining rig uses fans)
It will be increasing a lot your electricity cost, Over 15% in my opinions.
https://bitcointalk.org/index.php?topic=1348488.0

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December 15, 2016, 05:14:01 AM
 #3

Ac is okay to add in some cool air.

But. You need fans to suck the hot air out.

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December 15, 2016, 09:07:49 AM
 #4

I've seen several people mention that using AC is not a good choice for Miner cooling, could someone explain why? (Don't worry, my current mining rig uses fans)
It will be increasing a lot your electricity cost, Over 15% in my opinions.
https://bitcointalk.org/index.php?topic=1348488.0
This is the main reason why AC is not necessary on cooling the miner specially on operation. There are fans which could really take away the heat but you must really pay attention on the ventilation of the mining farm. If you add up AC then expect the additional expenses unless if you have cheap or free electricity.

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December 15, 2016, 10:07:50 AM
 #5

Problem is that AC wont give you enough air flow to be efficient so you will have to crank it up and use much more electricity than if you had simple fans that would have greater air flow on places where most heat is created. Air flow is really really important when we are talking about cooling electrical components.
Having both (ac and vents is good idea...AC to keep air cool and vents to deliver that cool air to places that are most heated up. That way AC can work on some "low" regime and you would need less vents or same amount that would work on low speeds and save electricity that way.
You should do some math calculations to see if that pays off.

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December 15, 2016, 10:25:03 AM
 #6

A modern high-efficiency AC unit will eat 15-35% as much in electric as the amount of rig wattage it can cool.

 Depends on the SEER/CEER rating for the specific numbers, but a typical SEER 9.5-10.0 window unit is very close to that "add 35%" figure.


 Evaporative cooling, *where it works efficiently*, can drop that to more like 5% which is a very small additional cost.



 Example - 1500 watts of rig generates a little over 5000 BTU of heat.
 A SEER 9.0 AC unit of 5000 BTU capasity would use appx. 550 watts of power, very close to 35% additional power usage to use an A/C to cool that rig with.




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December 15, 2016, 03:30:10 PM
 #7

Using the cool air from an AC'd house on the intake is fine
Many do this, as long as you are expelling the heat outside.
Trying to turn the heat around through an AC unit and reuse it is a MASSIVE waste of power, and kills any profit or ROI.

Heat must be expelled never cooled.
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December 15, 2016, 03:35:27 PM
 #8

I also think AC has a lot of moisture in the air it blows. So maybe if you want a the right AC then you have to remove moisture and that is added cost to your mining expenses. Also, I think fans can already deal with the heat just that it need proper ventilation. You have to suck out the hot air properly and not just blow air on to your miners.

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December 15, 2016, 03:39:16 PM
 #9

I also think AC has a lot of moisture in the air it blows. So maybe if you want a the right AC then you have to remove moisture and that is added cost to your mining expenses. Also, I think fans can already deal with the heat just that it need proper ventilation. You have to suck out the hot air properly and not just blow air on to your miners.

AC is actually great for pulling moisture from the air, It's generally fairly dry air.
People can dehumidify their homes with an AC unit.

It appears to have water as when it cools an object, the object then collects moisture, but the water is not in the actual cooled air so much as in the ambient air.
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December 16, 2016, 10:12:32 AM
 #10

I also think AC has a lot of moisture in the air it blows.

 All modern mechanical AC units have a "dehumidify" setting, as the cooling coil is cold enough it condenses humidity OUT of the air passing through it - which is why you need a drain line on ANY AC cooling coil (or a drain hole that is clear of the wall for window units).


 Because of the way relative humidity works, the "relative" humidity of the cold air output by an AC unit might be fairly high - but the actual moisture content is quite a bit lower.


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December 16, 2016, 11:19:41 AM
 #11

I've seen several people mention that using AC is not a good choice for Miner cooling, could someone explain why? (Don't worry, my current mining rig uses fans)

Depends on the price of the electricty consumption in your area, but on avarage using AC will cost you additional $70-$100 per month, so you should do the math to find out whether it worth it. Fans are better IMO, especially if the temperature outside is lower than 20°C.

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December 16, 2016, 05:26:45 PM
 #12

I've seen several people mention that using AC is not a good choice for Miner cooling, could someone explain why? (Don't worry, my current mining rig uses fans)

The Main reason is that it will be eating into your profitability and will take more time to get back your investments. And AC is not as much as effective when you compare it with running a fan to remove the heat produced from your rigs.


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December 17, 2016, 01:34:49 AM
 #13

It's possible to use a cheap water AC, where water is sucked from a nearby pond or a well, flows in metal pipes in front of a fan and goes back to the pond. This system would eat up below 100W, but you'd need a water source and some skill to build it. Like this thing but industrial size.


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December 17, 2016, 05:00:30 AM
 #14

It's possible to use a cheap water AC, where water is sucked from a nearby pond or a well, flows in metal pipes in front of a fan and goes back to the pond. This system would eat up below 100W, but you'd need a water source and some skill to build it. Like this thing but industrial size.

I dont think it would produce a cold air inspite of letting the water from water source pass through that pipe.It wont guarantee it would give cool air anytime but i appreciate this kind of invention though. Well i cant conclude since i didnt experience to use or invent this.
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December 17, 2016, 04:47:37 PM
 #15

It's possible to use a cheap water AC, where water is sucked from a nearby pond or a well, flows in metal pipes in front of a fan and goes back to the pond. This system would eat up below 100W, but you'd need a water source and some skill to build it. Like this thing but industrial size.

I dont think it would produce a cold air inspite of letting the water from water source pass through that pipe.It wont guarantee it would give cool air anytime but i appreciate this kind of invention though. Well i cant conclude since i didnt experience to use or invent this.

That will infact produce a fair bit of cold air.
Or cooler air anyway, but most people do not have the setup for this.
coolcoinz
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December 17, 2016, 05:21:31 PM
 #16

A typical AC works in the same way, it just uses much cooler pipes and radiators around them to increase the surface.
If the room temperature is for instance 30*C, the water from an outside source will be at least 10*C cooler. Passing air that is at 30* around the pipes that are at 20* will make it cooler, no doubt about it.
Similar technology is used in evaporative coolers, but they might not be suitable for mining because they increase humidity.


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December 17, 2016, 06:54:51 PM
 #17

It's possible to use a cheap water AC, where water is sucked from a nearby pond or a well, flows in metal pipes in front of a fan and goes back to the pond. This system would eat up below 100W, but you'd need a water source and some skill to build it. Like this thing but industrial size.

I dont think it would produce a cold air inspite of letting the water from water source pass through that pipe.It wont guarantee it would give cool air anytime but i appreciate this kind of invention though. Well i cant conclude since i didnt experience to use or invent this.

That will infact produce a fair bit of cold air.
Or cooler air anyway, but most people do not have the setup for this.

It's actually looking to be a promising investment for a miner. This way miners will not have to buy expensive air conditioning units nor pay for the electricity of running them. I think this would cool the air it blows as the fan and metal pipes will absorb the hot air and the cool water inside the pipes will cool the air. Really nice invention. I wonder if this would also help cool my room on a hot sunny day.

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December 17, 2016, 10:24:47 PM
 #18

It's possible to use a cheap water AC, where water is sucked from a nearby pond or a well, flows in metal pipes in front of a fan and goes back to the pond. This system would eat up below 100W, but you'd need a water source and some skill to build it. Like this thing but industrial size.

I dont think it would produce a cold air inspite of letting the water from water source pass through that pipe.It wont guarantee it would give cool air anytime but i appreciate this kind of invention though. Well i cant conclude since i didnt experience to use or invent this.

That will infact produce a fair bit of cold air.
Or cooler air anyway, but most people do not have the setup for this.

It's actually looking to be a promising investment for a miner. This way miners will not have to buy expensive air conditioning units nor pay for the electricity of running them. I think this would cool the air it blows as the fan and metal pipes will absorb the hot air and the cool water inside the pipes will cool the air. Really nice invention. I wonder if this would also help cool my room on a hot sunny day.
Yes it would, if you are blowing air over anything cooler then the ambient air, then it will come off cooler
you could even get to a point where using water cooling on the miners tied tot hat system would be HUGELY effective.
But the initial setup cost would be HUGE
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December 18, 2016, 04:25:36 AM
 #19

It's possible to use a cheap water AC, where water is sucked from a nearby pond or a well, flows in metal pipes in front of a fan and goes back to the pond. This system would eat up below 100W, but you'd need a water source and some skill to build it. Like this thing but industrial size.

I dont think it would produce a cold air inspite of letting the water from water source pass through that pipe.It wont guarantee it would give cool air anytime but i appreciate this kind of invention though. Well i cant conclude since i didnt experience to use or invent this.

That will infact produce a fair bit of cold air.
Or cooler air anyway, but most people do not have the setup for this.

It's actually looking to be a promising investment for a miner. This way miners will not have to buy expensive air conditioning units nor pay for the electricity of running them. I think this would cool the air it blows as the fan and metal pipes will absorb the hot air and the cool water inside the pipes will cool the air. Really nice invention. I wonder if this would also help cool my room on a hot sunny day.
Yes it would, if you are blowing air over anything cooler then the ambient air, then it will come off cooler
you could even get to a point where using water cooling on the miners tied tot hat system would be HUGELY effective.
But the initial setup cost would be HUGE

How about those liquid cooling system used for computers? Would those work for miners? I haven't seen anyone really make a liquid cooled miner so far. I think along with a fan which blows cool air, a liquid cooling device similar to computers would also be a good way to cool down miners while operating. Though, I think this would really be more expensive than air type coolers as this is already expensive on basic and gaming computer rigs.

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December 18, 2016, 08:53:53 AM
 #20



How about those liquid cooling system used for computers? Would those work for miners? I haven't seen anyone really make a liquid cooled miner so far. I think along with a fan which blows cool air, a liquid cooling device similar to computers would also be a good way to cool down miners while operating. Though, I think this would really be more expensive than air type coolers as this is already expensive on basic and gaming computer rigs.

Bitmain made one called the C1

Costs too much money on top of the cost of the miner.

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