Would an upside down conical shaped vessel heat faster than a cylindrical one?
Taking into consideration that heat rises and that the water is being heat from the bottom of the vessel.
All being the same, including volume of water and surface area of vessel and of course the size of heating element. Also assuming that heat loss is the same.
I'm pretty convinced that the conical shape would allow a quicker boil due to a more intensive heat lower down and the rising of the hotter water.
2007-12-14 08:04:59 · 4 answers · asked by britishbuddha 2 in Science & Mathematics ➔ Physics
If you assume that the heat in is the same , that heat loss is the same and that the volume of water is the same , why should it heat at different rate?
2007-12-14 08:13:43 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The size of the heating element might have a great impact. For the same volume of waterr, the conical shape would have a larger bottom and thereby allow a larger flame for heating. A small cylinder shape of the same volume would wate the heat from the oversized flame.
That said, all things being equal, I think the shape would not appreciably effect the speed at which two equal volumes would reach boiling. As hot water rises, colder water sinks to the bottom to be heated. the circulation ends up heating the mass of water so that top and bottom are not significantly different. An equal number of so many joules of energy into heating water of the same volume will result in a tie.
2007-12-14 16:19:28 · answer #2 · answered by Huba 6 · 0⤊ 0⤋
Conical shape would work better, more of the heated surface area of the vessel would be in contact with the water.
Just as a wider, shallower pan will boil faster than a deeper one with the same volume.
2007-12-14 16:13:23 · answer #3 · answered by Jim P 4 · 2⤊ 0⤋
No.... no....
When water heats up, it heats up uniformly. Yes, warmer water rises to the top, but it all gets mixed once it's up there.
In order to heat-up anything quickly i takes as much surface area as possible, or less water. The more contact the water makes with the surface of the pot/pan the better. So your cone thing may work, but you will heat less water and if you heat less water, you may as well put it in the pot and do your thing.
Besides the cost of making a regular pot is nothing, but making a cone would be very expensive.
Your idea is shutdown by me. Nice try at thinking though
2007-12-14 16:17:38 · answer #4 · answered by Ilya S 3 · 0⤊ 0⤋