yes I read all of that, that's why I was posting the direct question to them on that.  Its something that we learned very early on doing this in a containment situation, power efficiency is best spent getting larger air handlers to move the air, as opposed to letting the individual units run the 120mm / 90mm fans to circulate air.  Plus if they do, the event I described above occurs, you end up with a massive blow-back that causes your units to cook.

In a non containment scenario, the airflow is just too difficult to direct most of the time and you end up having a lot of hot spots, even with moving the physical equipment around. I've been doing some consulting and looking at private firms designs and ways to improve them, that's why its really interested in everyone else design.

Not saying the design is flawed, more of saying that Bitcoin heat generation is very different than standard IT equipment to look at.