The vaccum flask banquet is an insulating storage vessel that adopts modern technology, so it can keep the liquid in storage at the proper temperature. And, the vaccum flask kitchen usually consists of two flasks, placed one within the other and joined at the neck, so as to form a gap between these two flasks. This gap is significantly important in reducing heat transfer,
The gap between the two flasks is partially evacuated of air, creating a near-vacuum that significantly reduces heat transfer by conduction or convection. After that, it would make the insider temperature in a certain temperature.
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