Shmacky-McNuts: Had an argument about the logical pull of water from humidity, using dehumidifiers. The guy arguing with me did not believe I was pulling a gallon of water in 1 day. The machine was in a basement in summer time. The argument was about adding them to a game as a water source. It was funny he thought I was trolling, then it reminded me to go and empty the machine and it was actually over 1 gallon lol
So in some places. Tape and other items can be a nightmare to keep dry.
Mhmmm... I was thinking more an air compressor and a tank, the air you output would be probably 10x drier than the air you drew in; As the compressed air inside will condense the water more and pool at the bottom of the tank; Said air after drawing from say a box able to handle a bit of a vacuum you feed the air back in, repeat probably twice to make it fairly dry. Then empty the air compressor, which has a valve on the bottom where the water would pool up at.
Other dehumidifiers may work by making a portion of pipe cold which condenses water easier.
But yeah, if the tapes are already moist that would be a lot harder and more a pain to get/keep dry. That's why i was thinking there'd be an air-tight outer shell you'd put them in; Or have a dry room just for storage/playback of your tapes, maybe something like a juke box...
Either way, it would be a pain.