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Q & A: LN2 insulation

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Most recent answer: 10/22/2007
Q:
Recently I am working on a science project involving liquid nitrogen, is there any polymer material capable of shielding LN2 thermally at 77K? I don’t want to use metal or double vacuum. I have tried Armaflex (by Armstrong) 25mm but it is not that effective, it shrinks and frost condenses on the outside.
- David (age 25)
A:
Try ordinary styrofoam.

Mike W.

Nothings perfect -- frost will collect on the outside of just about anything in humid weather (although if you can get the heat transfer rate to be slow enough, the outside air can warm up the cold surface enough to keep frost from forming. Using a thicker styrofoam layer will help).

Tom

(published on 10/22/2007)

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