How does a thermos bottle minimize heat transfer? Investigate how heat loss due to convection, conduction, and radiation is prevented by looking at the design of a thermos. Compare cheaper versions to the design of more expensive versions and explain the differences in terms of the concepts used in the mechanism of heat transfer.
2007-11-25 23:49:11 · 6 answers · asked by ThE LaST HoRcRuX 3 in Science & Mathematics ➔ Physics
A thermos flask is basically a double container where space between the walls is kept under vaccum and the outer surface of the walls are kept shiny and smooth so that they act like mirrors. The vaccum prevents the flow of heat through the walls by conducton or convection, processes which require some medium. Heat transfer by radiation can take place through the vaccum, but the radiated heat is reflected back by the mirrored surfaces. So, not much heat can flow throught the walls of the flask and your drink remains hot or cold as desired.
2007-11-26 00:10:58 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A thermos bottle has a bottle in a bottle where the space between bottles is a vacuum and their surfaces are mirrors.
Vacuum is a great insulator which prevents convection and conduction from taking place. The mirrored surfaces reflect radiated heat and trying to keep where it is desirable either in or out.
2007-11-26 07:54:39 · answer #2 · answered by Edward 7 · 3⤊ 1⤋
soz,can't answer this.....it's been about 30 years the last time I seen my school,and even then I was not very good in physics.Was good in geography and telling jokes !lol some things never change haha
2007-11-26 08:00:11 · answer #3 · answered by Anonymous · 0⤊ 0⤋
hey trf 10$ to my bank account... I willl give u the correct answer :)
2007-11-26 08:01:02 · answer #4 · answered by Deepali Naik 3 · 0⤊ 0⤋
Ten Points!!! Oh, goody!!!!
Oh, wait. I've already taken phys 1b.
2007-11-26 08:31:06 · answer #5 · answered by ZikZak 6 · 1⤊ 0⤋
do your own assignment
2007-11-26 07:53:21 · answer #6 · answered by Anonymous · 3⤊ 2⤋