The greatest souce of pressure is the water standing in the hose. If the hose end loops up 12 inches to dump into a bucket. There is a head of water was the hose decends to the floor from the device of 12 inches. The steam must push down upon this head to escape raising the pressure in the device. See the Lewan video. In the sound track you can hear the steam rising through the water column when the camera focuses on the hose exit.
There is an additional head from the submurged hose end in the bucket. Add these to the submersion depth of the thermocouple and there's plenty of added pressure to acount for 100.4 C, or whatever it takes to cause general confusion. If it rises 30" to dump into a sink, think of all the free energy that's gotta be there because the steam looks so much hotter. If the exit is moved to the roof, you get even more free energy. On Tue, Jul 19, 2011 at 11:56 AM, Joshua Cude <[email protected]> wrote: > You're just guessing. > > The pressure at 30 cm of water is enough to raise the bp by about a degree. > The chimney height can explain it. >
