Question about immersion cooling

[henryvuong]

I want to try out mining at home. I plan to buy an Antminer S9 and build an immersion cooling rig, like this one:

https://www.youtube.com/watch?v=8KlsoRAbey8

The question: do I need any speacial casing to cover the Antminer S9 before immerse it in liquid? I mean, can I just dip it in liquid and it still work as if it's in the air? What about the PSU, can it also be immersed or it has to stay dry, except for the connectors?

I know Antminer S9 is not an ideal machine now for ROI, but this is just a start. I want to get the experience first before I dive further into mining. Anyone who has experience in immersion cooling please share you experience. Thanks

[mikeywith]

The liquid has to be insulator (doesn't conduct electricity) and so if you can sink the miner in it, there is no reason why you can't include the PSU, the only problem I can think of is that PSU might not work if the fan isn't spinning, so I don't know how they go about solving this issue, but I think since you are trying to cool the miner, there is no need to bring in the PSU's heat along, just put it outside the cooling box/container.

You are also going to face the same issue with the miner's fans, but most custom firmware allow you to run the miner without fans, if you chose to run the stock firmware you will need a fan simulator, it basically tricks the control board into thinking that there are two fans spinning at 5000-6000rpms and so the stock firmware will work just fine.

... can I just dip it in liquid and it still work as if it's in the air?

Yes.