That's where the fans come into play. There's also a tiny connection to the outside where the gas used to come in which makes the area cooler anyways. If it doesn't work I'll just revert it. 😌
Discussion
Fun project regardless
At the worst, I've wasted some time and material and learned something.
Might be better off trying to get some cheap S9s.
I have a mate who has about 5 or 6 bitaxes running in his office & it heats that room pretty well in winter.
I don't think 1 bitaxe is going to give you much heat though.
It's 3 (or 4 if I repair the screw holding the fan) at 6TH/s. Will probably get two additional NerdAxe+ nest year.