The second part—you basically need a solar power gas recondensor. Or to have one onboard. I take your point, fuel refrigeration is a role that you might not have ships do and you could keep a module in orbit to do.
But the hassle of docking and maintenance—and possibly zero net cost savings—might make it cheaper to just launch fuel condensing modules on be vehicle for the mission itself.
The second part—you basically need a solar power gas recondensor. Or to have one onboard. I take your point, fuel refrigeration is a role that you might not have ships do and you could keep a module in orbit to do.
But the hassle of docking and maintenance—and possibly zero net cost savings—might make it cheaper to just launch fuel condensing modules on be vehicle for the mission itself.