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Why vacuum storage bottle maintain temperature of beverages better than thermal bottle?

The heat of a stored hot beverage is mainly lost to the colder air around it through conduction, and a cold beverage will gradually gain heat from the environment in the same way. A thermal or a vacuum bottle retards the transfer of heat (in either direction) between food and its surroundings by placing a poor heat-conducting medium between the two.

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10:34:59 on 12/02/07 by Webmaster - Questions and Answers -