- #1
sven56
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A question about metal thermo flasks, or metal vacuum flasks if you prefer.
I understand the principle of thermo/vacuum flasks.
Just to proofed that I read up before posting this question :-)
http://en.wikipedia.org/wiki/Vacuum_flask
But today I had a look at on of those new-isch thermo flask contraptions totally made out of stainless metal.
Its one stainless steel flask inside other with a vacuum between. But there is a stainless steel bridge connecting those two bottles at the opening. Since metal is such a good heat transfer medium – how can my drink stay boiling hot for hours?
I understand the principle of thermo/vacuum flasks.
Just to proofed that I read up before posting this question :-)
http://en.wikipedia.org/wiki/Vacuum_flask
But today I had a look at on of those new-isch thermo flask contraptions totally made out of stainless metal.
Its one stainless steel flask inside other with a vacuum between. But there is a stainless steel bridge connecting those two bottles at the opening. Since metal is such a good heat transfer medium – how can my drink stay boiling hot for hours?