Can I suggest an improvement? Vacuum is also a great isolator and combined this with an internal hot air balloon, the inside can be made lighter by using hot air with the same pressure but lower density. The air is way less dense in the stratosphere so there must be some kind of equilibrium that can be obtained that once an object is that high it requires little energy to keep it there. These kind of blimps only get more efficient the bigger they get.
I also have an idea for active vacuum isolation for housig, much better lifetime than passive vacuum panels. Too bad no known takes my vacuum engineering serious.
I also have an idea for active vacuum isolation for housig, much better lifetime than passive vacuum panels. Too bad no known takes my vacuum engineering serious.