Comment by godelski

You don't need to but in a dark crater to use the ground as your sink.

Also you need to consider that the thermal conductivity of lunar regolith is quite low.

I'm not saying it's not possible but I am saying there's a lot of technical challenges that make naïve approaches not so simple. The reason doing things in space is hard is not just the difficulty of getting things up into space. It's that all the things you take for granted just don't work.

Oversimplification is a footgun. Or more accurately, in this case a foot taser (if you know why you've found one of the major challenges of doing anything on the moon and mars)