Such as aluminum cans, foil, etc?
2007-01-30 14:37:02 · 4 answers · asked by kw2026 1 in Environment
Styrofoam cup with lid wrapped with foil. My soup stays hot for quite some time in this cold weather.
2007-01-30 14:46:14 · answer #1 · answered by drysac 4 · 0⤊ 0⤋
I think so. I'm trying to read between the lines hear but I assume you want to build some kind of thermos. The basic idea would be to have two containers, separated by a layer of insulation. You could use an aluminum can for the inner container. It needs to be completely isolated from the outer container by a layer of insulating material. That could be styrofoam packing material (best), Fiberglass insulation, or if neither of those is available shredded up news paper.
The outer container could be a plastic 2 liter bottle cut down or just a larger can. I'd go for at least an inch of insulation all the way around the inner aluminum can including the bottom. It would also be better if you could come up with a lid of some kind and insulate it as well.
Have fun.
2007-01-30 14:52:53 · answer #2 · answered by Roadkill 6 · 0⤊ 0⤋
a thermos retains heat and is practically insulating foam covered with two surfaces made out of whatever
polystyrene is a good insulater, if you made a box out of this and sealed it what ever was inside would retain its heat longer than normal
2007-01-30 14:50:39 · answer #3 · answered by rutager 2 · 0⤊ 0⤋
a brick! water! foil cools too quick
2007-01-30 15:16:33 · answer #4 · answered by wes 2 · 0⤊ 0⤋