Am 27.08.2011 15:31, schrieb Joe Catania:
There isn't much mixing with that low a flow. Also cold water tends to
sink to the botton. Also steam tends to rise to the top. Also the
temperature should form a gradient from cold to hot. In short the
water is not the same temperature. But more importantly it won't be
evenly heated.
From my personal experience I cannot agree. Then I must have
significantly uneven heat distribution in my kitchen boiler and I never
observed that in my life.
>
Steam is not formed throughout the water volume but only at the hot
metal surfaces.
Yes, this is the reason why the steam is hotter than the water and these
bubbles going up must cause a lot of turbulency and convection.