What is the difference between insulating a house and double wall insulation in thermos bottles? Couldn’t using that technology conserve energy?
In: Engineering
A thermos works because there is no air (technically there’s a bit) between the two walls of the double wall. Heat needs a medium to conduct through, so if there’s nothing there except a vacuum, there’s nothing to conduct the heat. To do this in a house you’d have to pull a vacuum in the walls, roof, and floor of the house, and then seal it so air never leaks in. That’s way more difficult than using fiberglass.
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