Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
What absolute pressure does a thermos lining have?
- Thread starter Plasmech
- Start date
Well, according to
laboratory Dewar flasks are in the neighborhood of 10-5torr
I suspect that a run-of-the-mill Thermos for keeping your soup hot wouldn't bother to have such a good vacuum - a diffusion pump is needed to get down that low.
A decent mechanical vacuum pump could probably pull something like 10-3torr. I'd imagine a Thermos is in that range.
laboratory Dewar flasks are in the neighborhood of 10-5torr
I suspect that a run-of-the-mill Thermos for keeping your soup hot wouldn't bother to have such a good vacuum - a diffusion pump is needed to get down that low.
A decent mechanical vacuum pump could probably pull something like 10-3torr. I'd imagine a Thermos is in that range.
- Status
Similar threads
- Locked
- Question
- Locked
- Question
- Locked
- Question
