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Very nice reading.  I like to know the costs for each option.

Is immersion cooling the most expensive?

Hmm I think the link is dead but it might could be my bad timing. Please check and update. In regards to your comments about immersion being the most expensive, did you mean submersion or 2 phase immersion cooling techniques from Allied Control? Also given Bitfury's recent acquisition of Allied Control, I'm eager to see how this concept is adapted to such an extreme scale to meet Bitfury's super datacenter requirements. I imagine it will put the proof of concept design built with ASICMiner a few years ago really to shame.

I'll just hire 10 asians to blow on the miners as they go.
10/10 would asian labour again.

What a racist

Maybe,
This Picture PC
http://i.hizliresim.com/WZNVRY.jpg


Water Cooled Version Can be, Mining Hardware.

But the number of the device and Coolant could cost

I believe he was joking.  

The best article yet on bitcoin specific cooling.

Thanks especially for addressing the evaporative cooling aspect as I think many people do not understand that this method of cooling is deadly once outside humidity approaches 80% (It doesn't work)

A very well thought out and informative thread.

Cheers! I wish you wrote this earlier

At 80% humidity, I would say evaporative cooling is 99% useless (unless you are using the fans in the cooler as simply extra fans to move air).  To do much of anything the humidity needs to be about 30% (or ideally 15%).  Just look at a psychometric chart and you can see exactly at what temp and humidity you can get down to.  However, this is with an 100% effective cooler which isn't going to happen, so take about 75% of the distance to the wet bulb.

The great thing about evaporative cooling (and no one talks about) is that the warmer it gets, the lower the humidity will be, and therefore the better the evaporative cooler works.  For every 1 degree rise outside I only get something like a 0.2 degree rise inside.  Overall, temp changes every day are probably the biggest killer of equipment (long term) and evaporative coolers really average out the day and night temps to 1 pretty constant temp all of the time.  I have about 40 degree differences between day and night temps (during the summer) and with evaporative coolers it makes it only about a 8 ~ 10 degree change.  You could do some type of compression cooling to get that last 8 ~ 10 degree change down to 0 change, but it isn't necessary.  The temperature changes have an exponential nature, so 8 ~ 10 degree changes are about 1000th the amount of damage of 40 degree changes.

Sure, I agree that if you are in heavy humidity, that will make evap useless.  My first sentence above agrees with that 100%.

Maybe I am wrong, I thought you were in central WA?  Central WA is rated the same climate as New Mexico and about half of Arizona (https://en.wikipedia.org/wiki/Climate_of_the_United_States#/media/File:Climatemapusa2.PNG).  This makes it essentially a desert.  Evap coolers are ideal in the desert.

Are you talking about ASICSpace?  Their problem certainly wasn't humidity.  I have been to their location a number of times and am very familiar with their problems.  Jonathan (toom.im) has talked at length about what their problems are and I would say he is 110% correct.  Or were you talking about a different provider?

Would you consider a hybrid greenhouse/bitcoin mining for the fall-spring a novel idea to maintain higher temps?  Any idea of a simple solution to keep it happy for both?  I think it is what I want to do and I would be happy if another did it and posted photos too......if it works

I imagine just small like 5 or 10 S7 Ants. 

Maybe,
This Picture PC
http://i.hizliresim.com/WZNVRY.jpg


Water Cooled Version Can be, Mining Hardware.

But the number of the device and Coolant could cost