vacuum flask design Price - Aliexpress
Thus, the invention proposes a vacuum flask design which makes it possible to heat the contents of the flask simply and at no cost by means of solar energy. A vacuum flask of such design has many different possibilities of use, e.g., in the household or forcamping or for workers who take along lunch or snacks. However, larger-scale models of any desired size may be produced for commercial or industrial applications or for heating water or other liquids, e.g., for space-heating installations.
Physics: Vacuum Flask Design., vacuum flask, aluminized mylar
Double wall stainless steel vacuum flask Thermos design OTZ4-35/50
It is an object of this invention to provide an improved vacuum flask designed in such a way that the liquid contents thereof can be heated by solar radiation.
Mebelkart Vacuum Flask Design 10