On Monday, January 27, 2014 7:49:19 PM UTC-5, email@example.com wrote:
I'm sure it is impossible to explain this, or anything else, to you. But f
or the benefit of others:
any gas behaves as an ideal gas if the temperature is high enough, the pres
sure is low enough, AND.....important........it is a single phase system.
CO2 as commonly used is a two phase system. As it is used, liquid phase co
nverts to gaseous, maintaining a reasonably stable pressure at the given te
mperature. If this were not true, an air rifle could not possibly shoot ac
curately, and a number of other applications would be much more difficult.
The highly useful property of relatively stable pressure is caused by the
phase change - phase change is not part of the ideal gas equation, because
it doesn't happen in an ideal gas.
The fact of a two phase system existing, such as in a CO2 tank, or anywhere
you have water in liquid and gaseous phases together, indicates that tempe
rature is low enough and pressure high enough that you cannot assume ideal
gas conditions. A humidifier contains liquid water. Oops.
the given temperature. If this were not true, an air rifle could not
possibly shoot accurately, and a number of other applications would be
much more difficult. The highly useful property of relatively stable
pressure is caused by the phase change - phase change is not part of the
ideal gas equation, because it doesn't happen in an ideal gas.
that temperature is low enough and pressure high enough that you cannot
assume ideal gas conditions. A humidifier contains liquid water. Oops.
FWIW, this is an excellent audio-video demonstrating the ideal gas....
On Tuesday, January 28, 2014 5:45:18 PM UTC-5, firstname.lastname@example.org wrote:
Yes, in a manner that indicates you don't understand it.
Your posts are quick to insult but slow to show knowledge.
I'm pretty sure you don't actually have a clue about PV=nRT. But you cou
ld easily prove me wrong. Just solve the equation for V. See if Stormy go
t it right. Does 2 gallons of liquid water equal 3600 gallons of water vap
Unless you have kids who are high school students, I strongly suspect you'l
l have a little trouble converting 2 gallons to n in appropriate units and
looking up R. You'll probably get T right. And you'll certainly get P wro
ng, based on your earlier posts.
But after that it's just arithmetic. V = nRT/P.
Show your work, including the units.
Then do it again off the steam tables and see what the difference is. 1%?
Nah, you don't know what steam tables are. You solve the ideal gas equatio
n, and I'll look up the number off the steam table.
Some of the water vapor may be absorbed by any fabrics you have in your
home. Your carpets, rugs, bedding, clothing in closets, etc., are
getting slightly damper from the humidifier.
I notice it takes a long time for my humidifier to humidify my home.
That's because it first has to "humidify" my wall-to-wall carpets, which
soak up humidity like a sponge. (That's why a great way to humidify a
home is to just shampoo the carpet.)
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