At 02:58 PM 6/22/2011, Jed Rothwell wrote:
Jeff Driscoll wrote:
no it doesn't give the mass of water as vapor because it only works
for measuring the mass of water of vapor in AIR.
NOT in a mixture of vapor and microscopic water DROPLETS
All air has microscopic water droplets in it. Sometimes they are
macroscopic, for example, when it rains, or when someone takes a
shower, or in any kitchen. Are you suggesting that this meter does
not work when it rains? Or it does not work in a bathroom?
The meter will work there. However, if there are microscopic water
droplets in any air, they will quickly vanish if the RH is below 100.
(If you think rain does not come indoors, you should visit a
traditional Japanese house, or our house in Atlanta.)
Low temperature steam also always has microscopic water droplets in it.
That means condensed stream and this is why it's visible as a cloud.
Live steam is invisible and has no "microscopic droplets" in it. Wet
steam does, that's the very definition of wet steam. Wet steam is visible.
I'd think you could make a wet steam gauge that would work from light
scattered by the droplets. Could be pretty simple, and would be
calibrated to various flow rates.
There are really two issues here, that get conflated. One is wetness
of steam, the other is the possibility of liquid water being pushed
out of the chamber into the outlet hose.
