If filled with cold water after can make the heat preservation performance degradation With hot water or just buy the first time after a cold water can hold? Help to see! Thank you very much!!
There are three kinds of heat transfer way: thermal radiation, heat convection and heat conduction. The tank of the vacuum flask is made, double deck glass on two layers of glass are plated with silver, like a mirror, to reflect the heat rays, so as to cut off the access of the thermal radiation; Between the two layers of the vacuum flask glass into a vacuum, and destroys the condition of convection conduction; Insulation cap to choose is not easy to heat transfer of cork, partition of convection heat transfer pathways. Thermos role is to keep the temperature of the hot water bottle, cut off the bottle and bottle of heat exchange, make the "heat" inside the bottle couldn't go out, outside the "cold" into the bottle does not come. Similarly, if the inside the vacuum flask into cold water, the "hot" is not easy to run to the outside in the bottle, vacuum flask can keep "hot", therefore also to keep the "cold"
Can of course! It is to keep the temperature, can also keep the temperature of cold water. Put the hot water, vacuum flask on the room temperature first, then pour a small amount of hot water is warm the whole vacuum flask and poured hot water.
General vacuum flask with hot water, cold water or ice water will not cause abnormal performance degradation. But in order to maintain, as far as possible don't frequent change of temperature difference is too big things (such as the original 95 degrees of hot water, pouring temperature ranging from immediately after put ice in it).
Can be filled with cold water, in a certain time can heat preservation can be cold. Has no effect on vacuum flask. The role is to prevent heat transfer of the vacuum flask.
Thermos containers that can hold water. Role is to prevent heat transfer of the vacuum flask, in a certain period of time already can heat preservation can be cold.
